M Theory, Orientifolds and G-Flux

Abstract

We study the properties of M and F theory compactifications to three and four dimensions with background fluxes. We provide a simple construction of supersymmetric vacua, including some with orientifold descriptions. These vacua, which have warp factors, typically have fewer moduli than conventional Calabi-Yau compactifications. The mechanism for anomaly cancellation in the orientifold models involves background RR and NS fluxes. We consider in detail an orientifold of $K3\times T^2$ with background fluxes. After a combination of T and S-dualities, this type IIB orientifold is mapped to a compactification of the SO(32) heterotic string on a non-Kahler space with torsion.

28 pages, harvmac; references added; some formulae corrected

Cited by in corpus (649)

• Dynamics of dark energy
• de Sitter Vacua in String Theory
• Hierarchies from Fluxes in String Compactifications
• Supergravity description of field theories on curved manifolds and a no go theorem
• Observational Signatures and Non-Gaussianities of General Single Field Inflation
• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• The Swampland: Introduction and Review
• Flux Compactification
• Flux compactifications in string theory: a comprehensive review
• The statistics of string/M theory vacua
• Toward Realistic Intersecting D-Brane Models
• Supersymmetry Breaking and alpha'-Corrections to Flux Induced Potentials
• Large-Volume Flux Compactifications: Moduli Spectrum and D3/D7 Soft Supersymmetry Breaking
• Soft Supersymmetry Breaking in KKLT Flux Compactification
• Moduli Stabilization from Fluxes in a Simple IIB Orientifold
• RR Flux on Calabi-Yau and Partial Supersymmetry Breaking
• The effective action of N=1 Calabi-Yau orientifolds
• Nongeometric Flux Compactifications
• Approaches to Understanding Cosmic Acceleration
• Brane/Flux Annihilation and the String Dual of a Non-Supersymmetric Field Theory
• Building a Better Racetrack
• New Supersymmetric String Compactifications
• String Cosmology: A Review
• Non-Kaehler String Backgrounds and their Five Torsion Classes
• Counting Flux Vacua
• What if string theory has no de Sitter vacua?
• Superstrings with Intrinsic Torsion
• The effective action of Type IIA Calabi-Yau orientifolds
• Scales and hierarchies in warped compactifications and brane worlds
• Duality Twists, Orbifolds, and Fluxes
• Racetrack Inflation
• Gauge/Gravity Duals with Holomorphic Dilaton
• Mirror Symmetry in Generalized Calabi-Yau Compactifications
• D3/D7 Inflationary Model and M-theory
• N=3 Warped Compactifications
• A scan for new N=1 vacua on twisted tori
• Geometric Constructions of Nongeometric String Theories
• Dynamics of warped compactifications and the shape of the warped landscape
• The effective action of D7-branes in N=1 Calabi-Yau orientifolds
• Supersymmetric Three-Form Flux Perturbations on $Ad{S}_5$
• Lectures on F-theory compactifications and model building
• Soft Supersymmetry Breaking in Calabi-Yau Orientifolds with D-branes and Fluxes
• Moduli Stabilization in Chiral Type IIB Orientifold Models with Fluxes
• Flux-induced SUSY-breaking soft terms
• Les Houches Lectures on Constructing String Vacua
• Solitons, Superpotentials and Calibrations
• The Scaling of the No Scale Potential and de Sitter Model Building
• Flux-induced SUSY-breaking soft terms on D7-D3 brane systems
• RG-Flow, Gravity and the Cosmological Constant
• Inflationary Constraints on Type IIA String Theory
• Saltatory Relaxation of the Cosmological Constant
• Flux-induced Soft Supersymmetry Breaking in Chiral Type IIB Orientifolds with D3/D7-Branes
• Chiral 4d string vacua with D-branes and NSNS and RR fluxes
• Building MSSM Flux Vacua
• Geometric Model for Complex Non-Kaehler Manifolds with SU(3) Structure
• TASI Lectures on the Cosmological Constant
• New Aspects of Heterotic--F Theory Duality
• de Sitter String Vacua from Kahler Uplifting
• Progress in D-brane model building
• Compactifications of Heterotic Theory on Non-Kahler Complex Manifolds: I
• Stringy corrections to Kahler potentials, SUSY breaking, and the cosmological constant problem
• F-term Axion Monodromy Inflation
• Warped Compactifications in M and F Theory
• Simple de Sitter Solutions
• Model Building with F-Theory
• M-theory compactified on Calabi-Yau fourfolds with background flux
• Towards Classical de Sitter Solutions in String Theory
• deSitter vacua from uplifting D-terms in effective supergravities from realistic strings
• Flux Compactifications on Calabi-Yau Threefolds
• Random Matrices and the Spectrum of N-flation
• The N=1 effective action of F-theory compactifications
• Kaehler Corrections for the Volume Modulus of Flux Compactifications
• New Attractors
• Intersecting Brane Models of Particle Physics and the Higgs Mechanism
• D-terms and F-terms from D7-brane fluxes
• De Sitter vs Quintessence in String Theory
• Compactifications of Heterotic Strings on Non-Kahler Complex Manifolds: II
• Matter and singularities
• Compactification with Flux on K3 and Tori
• The Statistics of Supersymmetric D-brane Models
• Supersymmetry Breaking, M-Theory and Fluxes
• Physics of String Flux Compactifications
• Computational complexity of the landscape I
• The dS swampland conjecture and the Higgs potential
• G-flux in F-theory and algebraic cycles
• Heterotic Strings with Torsion
• D3/D7 Brane Inflation and Semilocal Strings
• G-Structures, Fluxes and Calibrations in M-Theory
• F-theory fluxes, Chirality and Chern-Simons theories
• Enumerating Flux Vacua with Enhanced Symmetries
• Supersymmetric Intersecting Branes on the Type IIA T^6/Z_4 orientifold
• Generalized Flux Vacua
• The Giant Inflaton
• $\overline{D3}$ and dS
• Towards de Sitter from 10D
• Gaugino Condensation and Nonperturbative Superpotentials in Flux Compactifications
• Basic results in Vacuum Statistics
• Heterotic on Half-flat
• Heterotic Moduli Stabilization with Fractional Chern-Simons Invariants
• Gauged Supergravities
• Chiral Four-Dimensional F-Theory Compactifications With SU(5) and Multiple U(1)-Factors
• Dynamics of Warped Flux Compactifications
• On the Explicit Construction and Statistics of Calabi-Yau Flux Vacua
• Remarks on the Warped Deformed Conifold
• General N = 1 Supersymmetric Fluxes in Massive Type IIA String Theory
• Nongaussian and nonscale-invariant perturbations from tachyonic preheating in hybrid inflation
• Inflation in Realistic D-Brane Models
• The tension between 10D supergravity and dS uplifts
• Anomaly Cancellation and Smooth Non-Kahler Solutions in Heterotic String Theory
• De Sitter Vacua from Heterotic M-Theory
• Warped Reheating in Brane-Antibrane Inflation
• Inflating in a Better Racetrack
• Supersymmetry Breaking by Fluxes
• Hierarchy Stabilization in Warped Supersymmetry
• The fate of four dimensions
• On the Taxonomy of Flux Vacua
• SUSY Quivers, Intersecting Branes and the Modest Hierarchy Problem
• An Open String Landscape
• An Inflationary Model in String Theory
• Building an explicit de Sitter
• de Sitter Space in Non-Critical String Theory
• F-theory Flux, Destabilization of Orientifolds and Soft Terms on D7--Branes
• Asymptotic Flux Compactifications and the Swampland
• Constraining de Sitter Space in String Theory
• On N=8 attractors
• Torsional Heterotic Geometries
• Four-Flux and Warped Heterotic M-Theory Compactifications
• de Sitter String Vacua from Supersymmetric D-terms
• A Moduli Fixing Mechanism in M theory
• String theory: a perspective over the last 25 years
• Realistic D-Brane Models on Warped Throats: Fluxes, Hierarchies and Moduli Stabilization
• Lectures on Nongeometric Flux Compactifications
• M-theory and Type IIA Flux Compactifications
• Non-perturbative effects on seven-brane Yukawa couplings
• Spontaneous Inflation and the Origin of the Arrow of Time
• General Axisymmetric Solutions and Self-Tuning in 6D Chiral Gauged Supergravity
• Fixing Moduli in Exact Type IIA Flux Vacua
• Life at the Interface of Particle Physics and String Theory
• Vacuum Stability in Heterotic M-Theory
• Multiple Inflation, Cosmic String Networks and the String Landscape
• A New Handle on de Sitter Compactifications
• Moduli Stabilization in Non-Geometric Backgrounds
• Fluxes and gaugings: N = 1 effective superpotentials
• Stringy Effects During Inflation and Reheating
• Remarks on scale separation in flux vacua
• Supersymmetry and F-theory realization of the deformed conifold with three-form flux
• The Tadpole Problem
• Lectures on Cosmic Inflation and its Potential Stringy Realizations
• Moduli Stabilisation for Chiral Global Models
• Warped Supersymmetry Breaking
• TASI/PiTP/ISS Lectures on Moduli and Microphysics
• Non-geometric backgrounds in string theory
• Properties Of Heterotic Vacua From Superpotentials
• Saltatory de Sitter String Vacua
• Cascading RG Flows from New Sasaki-Einstein Manifolds
• DBI Inflation in the Tip Region of a Warped Throat
• A comment on effective field theories of flux vacua
• Holomorphic Bundles and the Moduli Space of N=1 Supersymmetric Heterotic Compactifications
• Flux algebra, Bianchi identities and Freed-Witten anomalies in F-theory compactifications
• Chaotic Duality in String Theory
• A note on obstinate tachyons in classical dS solutions
• Fixing All Moduli for M-Theory on K3xK3
• New D=4 gauged supergravities from N=4 orientifolds with fluxes
• Gaugino condensation and small uplifts in KKLT
• Reheating for Closed String Inflation
• Warped Reheating in Multi-Throat Brane Inflation
• The Universal Kaehler Modulus in Warped Compactifications
• Sequestering in String Theory
• Constraints on String Cosmology
• Algebroids, Heterotic Moduli Spaces and the Strominger System
• The Fall of Stringy de Sitter
• Non-Kaehler Heterotic String Compactifications with non-zero fluxes and constant dilaton
• N=1 geometries for M-theory and type IIA strings with fluxes
• Reformulating Supersymmetry with a Generalized Dolbeault Operator
• SUSY Breaking and Moduli Stabilization from Fluxes in Gauged 6D Supergravity
• New string vacua from twistor spaces
• More on Dimension-4 Proton Decay Problem in F-theory -- Spectral Surface, Discriminant Locus and Monodromy
• de Sitter Vacua in Type IIB String Theory: Classical Solutions and Quantum Corrections
• Right-handed Neutrinos in F-theory Compactifications
• Local Heterotic Torsional Models
• N=4 Supergravity Lagrangian for Type IIB Orientifold on T^6/Z_2 in Presence of Fluxes and D3-Branes
• MSLED: A Minimal Supersymmetric Large Extra Dimensions Scenario
• Geometric Transitions, Flops and Non-Kahler Manifolds: I
• Swampland Conjectures and Late-Time Cosmology
• Type IIB Theory on Half-flat Manifolds
• The effective action of type II Calabi-Yau orientifolds
• D7-Brane Moduli Space in Axion Monodromy and Fluxbrane Inflation
• Gravitational Wave Constraints on DBI Inflation
• The Throat as a Randall-Sundrum Model with Goldberger-Wise Stabilization
• D7-Brane Motion from M-Theory Cycles and Obstructions in the Weak Coupling Limit
• Bouncing Brane Cosmologies from Warped String Compactifications
• O-plane Backreaction and Scale Separation in Type IIA Flux Vacua
• Branes on Generalized Calibrated Submanifolds
• The Fluxed MSSM
• The Global Gauge Group Structure of F-theory Compactification with U(1)s
• The Ubiquitous Throat
• The unwarped, resolved, deformed conifold: fivebranes and the baryonic branch of the Klebanov-Strassler theory
• Counting fermionic zero modes on M5 with fluxes
• Perturbative moduli stabilisation in type IIB/F-theory framework
• A Note on Compactifications on Spin(7)-Holonomy Manifolds
• The warped, resolved, deformed conifold gets flavoured
• Geometric Transitions, Flops and Non-Kahler Manifolds: II
• Compactified String Theories -- Generic Predictions for Particle Physics
• The de Sitter swampland conjecture and supersymmetric AdS vacua
• A 10d view on the KKLT AdS vacuum and uplifting
• Topological constraints on stabilized flux vacua
• Maximal Supergravity from IIB Flux Compactifications
• Multi-Flux Warped Throats and Cascading Gauge Theories
• Fluxes in Heterotic and Type II String Compactifications
• Uplifting and Inflation with D3 Branes
• In the Realm of the Geometric Transitions
• Finding all flux vacua in an explicit example
• The Convex Hull Swampland Distance Conjecture and Bounds on Non-geodesics
• Fluxes in M-theory on 7-manifolds and G structures
• Quantum Corrections and the de Sitter Swampland Conjecture
• On Classifying the Divisor Involutions in Calabi-Yau Threefolds
• The Geometry, Branes and Applications of Exceptional Field Theory
• 4-D gauged supergravity analysis of Type IIB vacua on $K3\times T^2/Z_2$
• Geometric Transition versus Cascading Solution
• Accelerating Universes and String Theory
• AdS Strings with Torsion: Non-complex Heterotic Compactifications
• On Flux Quantization in F-Theory
• Bianchi Identities for Non-Geometric Fluxes - From Quasi-Poisson Structures to Courant Algebroids
• Open problems on classical de Sitter solutions
• Nonrenormalization of Flux Superpotentials in String Theory
• On Potentials from Fluxes
• A Barren Landscape?
• Warping the Kähler potential of F-theory/IIB flux compactifications
• Transplanckian Axion Monodromy !?
• An Orientifold with Fluxes and Branes via T-duality
• Supersymmetry and Stability of Flux Vacua
• Axion Monodromy Inflation on Warped Throats
• A Gravitino Distance Conjecture
• Zp charged branes in flux compactifications
• Spontaneous decompactification
• String Theory Realizations of the Nilpotent Goldstino
• F-theory and 2d (0,2) Theories
• Probabilities in the landscape: The decay of nearly flat space
• de Sitter in non-supersymmetric string theories: no-go theorems and brane-worlds
• The Revival of (0,2) Linear Sigma Models
• Unusual gauged supergravities from type IIA and type IIB orientifolds
• Open String Wavefunctions in Warped Compactifications
• Non-perturbative F-terms across lines of BPS stability
• D6-branes and torsion
• UV Shadows in EFTs: Accidental Symmetries, Robustness and No-Scale Supergravity
• Warped Deformed Throats have Faster (Electroweak) Phase Transitions
• Moduli Stabilisation with Nilpotent Goldstino: Vacuum Structure and SUSY Breaking
• Eternal Inflation with alpha'-Corrections
• Fluxes in M-theory on 7-manifolds: G-structures and Superpotential
• A Quadrillion Standard Models from F-theory
• Fluxes and Branes in Type II Vacua and M-theory Geometry with G(2) and Spin(7) Holonomy
• Moduli Space Holography and the Finiteness of Flux Vacua
• The Leading Quantum Corrections to Stringy Kahler Potentials
• Phases, Flops and F-theory: SU(5) Gauge Theories
• Calabi-Yau Fourfolds with Flux and Supersymmetry Breaking
• Cosmological UV/IR Divergences and de-Sitter Spacetime
• de Sitter Vacua in the String Landscape
• Uber-naturalness: unexpectedly light scalars from supersymmetric extra dimensions
• AdS vacua with scale separation from IIB supergravity
• Axion gauge symmetries and generalized Chern-Simons terms in N=1 supersymmetric theories
• LARGE Volume String Compactifications at Finite Temperature
• The LVS Parametric Tadpole Constraint
• Stabilizing Moduli with a Positive Cosmological Constant in Heterotic M-Theory
• Landscape Cartography: A Coarse Survey of Gauge Group Rank and Stabilization of the Proton
• No-scale and scale-separated flux vacua from IIA on G2 orientifolds
• Raising Anti de Sitter Vacua to de Sitter Vacua in Heterotic M-Theory
• On de Sitter String Vacua from Anti-D3-Branes in the Large Volume Scenario
• Heterotic Flux Compactifications and Their Moduli
• de Sitter String Vacua from Perturbative Kahler Corrections and Consistent D-terms
• Moduli Stabilisation and Applications in IIB String Theory
• D-brane, fluxes and chirality
• Linear Sigma Models with Torsion
• Green-Schwarz Mechanism in Heterotic (2,0) Gauged Linear Sigma Models: Torsion and NS5 Branes
• Stabilizing All Kahler Moduli in Type IIB Orientifolds
• The Vertical, the Horizontal and the Rest: anatomy of the middle cohomology of Calabi-Yau fourfolds and F-theory applications
• Dynamical Tadpoles, Stringy Cobordism, and the SM from Spontaneous Compactification
• Fixing D7 Brane Positions by F-Theory Fluxes
• Combining Universal and Odd RR Axions for Aligned Natural Inflation
• Asymptotic Accelerated Expansion in String Theory and the Swampland
• Duality in Heterotic Vacua With Four Supercharges
• Toward Large N Thermal QCD from Dual Gravity: The Heavy Quarkonium Potential
• Gravitational Instantons and Fluxes from M/F-theory on Calabi-Yau fourfolds
• The effective action of the heterotic string compactified on manifolds with SU(3) structure
• DWSB in heterotic flux compactifications
• A Note on Flux Induced Superpotentials in String Theory
• Mirage Pattern from the Heterotic String
• G4-Flux and Standard Model Vacua in F-theory
• Fluxes in F-theory Compactifications on Genus-One Fibrations
• Observing the Geometry of Warped Compactification via Cosmic Inflation
• On N=1 4d Effective Couplings for F-theory and Heterotic Vacua
• Time-Dependent Warping, Fluxes, and NCYM
• Large Dimensions and Small Curvatures from Supersymmetric Brane Back-reaction
• Model Building and Phenomenology of Flux-Induced Supersymmetry Breaking on D3-branes
• D3-brane Vacua in Stabilized Compactifications
• Discrete torsion in non-geometric orbifolds and their open-string descendants
• Type IIB Solutions with Interpolating Supersymmetries
• Hypercharge flux in F-theory and the stable Sen limit
• Gaugino Condensation and the Cosmological Constant
• Heterotic string from a higher dimensional perspective
• Inflating with Large Effective Fields
• Classification of Supersymmetric Flux Vacua in M Theory
• The effective action of D-branes in Calabi-Yau orientifold compactifications
• 3-Form Induced Potentials, Dilaton Stabilization, and Running Moduli
• Stabilizing moduli with thermal matter and nonperturbative effects
• Flux backgrounds from Twists
• Bounds on masses of bulk fields in string compactifications
• Systematics of the ${\alpha }^{\prime }$ Expansion in F-Theory
• Soft branes in supersymmetry-breaking backgrounds
• Gauge Backgrounds and Zero-Mode Counting in F-Theory
• Supersymmetric Intersecting D6-branes and Fluxes in Massive Type IIA String Theory
• The Landscape of String Theory and The Wave Function of the Universe
• On marginal deformations of (0,2) non-linear sigma models
• Surveying Standard Model Flux Vacua on $T^6/Z_2\times Z_2$
• How many fluxes fit in an EFT?
• Loops, Local Corrections and Warping in the LVS and other Type IIB Models
• Heterotic Non-Kahler Geometries via Polystable Bundles on Calabi-Yau Threefolds
• Sparticle Spectrum of Large Volume Compactification
• Moduli Space of Torsional Manifolds
• IIA String Theory on Calabi-Yau Fourfolds with Background Fluxes
• Chiral matter wavefunctions in warped compactifications
• Open string wavefunctions in flux compactifications
• Orbifold Symmetry Reductions of Massive Boson-Fermion Degeneracy
• Heterotic Resolved Conifolds with Torsion, from Supergravity to CFT
• Inflationary String Theory?
• Dirac Action on M5 and M2 Branes with Bulk Fluxes
• Fermions on the Anti-Brane: Higher Order Interactions and Spontaneously Broken Supersymmetry
• Brane instantons and fluxes in F-theory
• Type II/F-theory Superpotentials with Several Deformations and N=1 Mirror Symmetry
• Fluxes and Warping for Gauge Couplings in F-theory
• Cosmological Moduli Dynamics
• On classical de Sitter and Minkowski solutions with intersecting branes
• The Generalized Green-Schwarz Mechanism for Type IIB Orientifolds with D3- and D7-Branes
• Duality symmetric massive type II theories in D=8 and D=6
• Warped Kähler potentials and fluxes
• Rigid 6D supersymmetry and localization
• D-brane instantons and the effective field theory of flux compactifications
• Gauge-Gravity Dualities, Dipoles and New Non-Kahler Manifolds
• The Heterotic Superpotential and Moduli
• Putting the Boot into the Swampland
• Observable Chiral Gravitational Waves from Inflation in String Theory
• G-structures and Domain Walls in Heterotic Theories
• Minkowski${}_4$ $\times$ $S^2$ solutions of IIB supergravity
• Anomaly Inflow Methods for SCFT Constructions in Type IIB
• Calabi-Yau Duals of Torus Orientifolds
• Heterotic fluxes and supersymmetry
• Massive Boson-Fermion Degeneracy and the Early Structure of the Universe
• de Sitter Space as a Glauber-Sudarshan State: II
• Superstring Orientifolds with Torsion: O5 Orientifolds of Torus Fibrations and their Massless Spectra
• T-folds, doubled geometry, and the SU(2) WZW model
• $G_4$ Flux, Algebraic Cycles and Complex Structure Moduli Stabilization
• Gaugino Condensates and Fluxes in N = 1 Effective Superpotentials
• Towards the Standard Model in F-theory
• Holographic dual of the Standard Model on the throat
• Supersymmetric Configurations, Geometric Transitions and New Non-Kahler Manifolds
• Estimating Calabi-Yau Hypersurface and Triangulation Counts with Equation Learners
• Non-perturbative orientifold transitions at the conifold
• $Z_N$ Orientifolds with Flux
• Accidental Inflation in the Landscape
• Supersymmetry Changing Bubbles in String Theory
• Minimal flux Minkowski classification
• Flux Flattening in Axion Monodromy Inflation
• Local models of Gauge Mediated Supersymmetry Breaking in String Theory
• M-theory on Spin(7) Manifolds, Fluxes and 3D, N=1 Supergravity
• de Sitter Space as a Glauber-Sudarshan State
• Domain Wall Junctions in Supersymmetric Field Theories in D=4
• Supersymmetry breaking, heterotic strings and fluxes
• On The Warped Heterotic Axion
• Axionic D3-D7 Inflation
• Top Quarks as a Window to String Resonances
• A Study of Structure Formation and Reheating in the D3/D7 Brane Inflation Model
• Geometries, Non-Geometries, and Fluxes
• Four-dimensional de Sitter space is a Glauber-Sudarshan state in string theory
• Type IIB flux vacua and tadpole cancellation
• Building Supergravity Quintessence Model
• Minkowski flux vacua of type II supergravities
• IIA supergravity and M-theory on manifolds with SU(4) structure
• Novel Branches of (0,2) Theories
• Two-field Kähler moduli inflation on large volume moduli stabilization
• String vacua with flux from freely-acting obifolds
• Massless D-strings and moduli stabilization in type I cosmology
• Systematics of multi-field effects at the end of warped brane inflation
• Heterotic horizons, Monge-Ampere equation and del Pezzo surfaces
• F-term Stabilization of Odd Axions in LARGE Volume Scenario
• Instantons, Hypermultiplets and the Heterotic String
• D-terms on the resolved conifold
• The effective action of warped M-theory reductions with higher-derivative terms - Part II
• An F-theory Realization of the Chiral MSSM with ${\mathbb{Z}}_2$-Parity
• Non-Kaehler attracting manifolds
• Brane Worlds in 5D and Warped Compactifications in IIB
• On de Sitter Spacetime and String Theory
• Comments on Heterotic Flux Compactifications
• Supersymmetric AdS Backgrounds in String and M-theory
• Heterotic Flux Vacua from Hybrid Linear Models
• Supersymmetry Breaking and Stability in String Vacua: brane dynamics, bubbles and the swampland
• T-duality revisited
• Discrete Gauge Groups in F-theory Models on Genus-One Fibered Calabi-Yau 4-folds without Section
• Non-geometric fluxes as supergravity backgrounds
• Distribution of Flux Vacua around Singular Points in Calabi-Yau Moduli Space
• Fluxes, Vacua, and Tadpoles meet Landau-Ginzburg and Fermat
• Mass spectrum of type IIB flux compactifications -- comments on AdS vacua and conformal dimensions
• Heterotic compactifications on SU(2)-structure backgrounds
• A Breathing Mode for Warped Compactifications
• Enhanced Symmetries in Multiparameter Flux Vacua
• Non-perturbative effects and wall-crossing from topological strings
• Aspects of Stability and Phenomenology in Type IIA Orientifolds with Intersecting D6-branes
• Warped Strings: Self-dual Flux and Contemporary Compactifications
• Gravitational Wave Constraints on Multi-Brane Inflation
• Consistent de Sitter String Vacua from Kahler Stabilization and D-term uplifting
• Gravitational Memory and Compact Extra Dimensions
• Enhancements in F-theory models on moduli spaces of K3 surfaces with $ADE$ rank 17
• De Sitter vacua from a D-term generated racetrack potential in hypersurface Calabi-Yau compactifications
• Heterotic backgrounds via generalised geometry: moment maps and moduli
• The Noether-Lefschetz Problem and Gauge-Group-Resolved Landscapes: F-Theory on K3 x K3 as a Test Case
• Small flux superpotential in F-theory compactifications
• Topology Change from (Heterotic) Narain T-Duality
• Brane Annihilations during Inflation
• Qubits from extra dimensions
• Inflation on an Open Racetrack
• Target Spaces from Chiral Gauge Theories
• N=2 Super-Higgs, N=1 Poincare' Vacua and Quaternionic Geometry
• Higher Derivative Corrections to O-plane Actions: NS-NS Sector
• Non-Kaehler Heterotic String Solutions with non-zero fluxes and non-constant dilaton
• An Analysis of Fluxes by Duality
• Gravitational waves in warped compactifications
• A note on smeared branes in flux vacua and gauged supergravity
• BPS Action and Superpotential for Heterotic String Compactifications with Fluxes
• A new Ricci flat geometry
• Computing the Spectrum of a Heterotic Flux Vacuum
• Dielectric (p,q) Strings in a Throat
• Crisis on Infinite Earths: Short-lived de Sitter Vacua in the String Theory Landscape
• Dipole-Deformed Bound States and Heterotic Kodaira Surfaces
• On T-duality transformations for the three-sphere
• Curvatures and potential of M-theory in D=4 with fluxes and twist
• Warped Kaluza-Klein Dark Matter
• M5-brane geometries, T-duality and fluxes
• GLSMs for non-Kahler Geometries
• Brane Inflation, Solitons and Cosmological Solutions: I
• On the Flux Vacua in F-theory Compactifications
• Disc amplitudes, picture changing and space-time actions
• Gaugino mass term for D-branes and Generalized Complex Geometry
• Type IIA and Heterotic String Vacua in D=2
• Asymmetric Gepner models in type II
• Fields Annihilation and Particles Creation in DBI inflation
• Racing through the swampland: de Sitter uplift vs weak gravity
• The Cost of Seven-brane Gauge Symmetry in a Quadrillion F-theory Compactifications
• Effective Theories as Truncated Trans-Series and Scale Separated Compactifications
• Supersymmetry Breaking Warped Throats and the Weak Gravity Conjecture
• Lobotomy of Flux Compactifications
• De Sitter Uplift with Dynamical Susy Breaking
• Dirac structures on nilmanifolds and coexistence of fluxes
• Gauge Groups and Matter Fields on Some Models of F-theory without Section
• Strings on Eight-Orbifolds
• Heterotic-Type I Dual Pairs, Rigid Branes and Broken Susy
• Spontaneous N=2 -> N=1 Supergravity Breaking in Three Dimensions
• Double-Scaling Limit of Heterotic Bundles and Dynamical Deformation in CFT
• Twisting K3 x T^2 Orbifolds
• Superpotentials in IIA compactifications with general fluxes
• Flux Vacua Attractors and Generalized Compactifications
• Kahler versus Non-Kahler Compactifications
• Observable Signatures of Inflaton Decays
• Hiding An Extra Dimension
• Gauge groups and matter spectra in F-theory compactifications on genus-one fibered Calabi-Yau 4-folds without section - hypersurface and double cover constructions
• O'KKLT at Finite Temperature
• Freedom and Constraints in the K3 Landscape
• Heterotic Sigma Models with N=2 Space-Time Supersymmetry
• Moduli stabilization with non-geometric fluxes -- comments on tadpole contributions and de-Sitter vacua
• Brane/flux annihilation transitions and nonperturbative moduli stabilization
• T-duality Twists and Asymmetric Orbifolds
• Compact supersymmetric solutions of the heterotic equations of motion in dimension 5
• Moduli Stabilization with Long Winding Strings
• Compact G2 holonomy spaces from SU(3) structures
• Type IIB flux compactifications with $h^{1,1}=0$
• Inflationary de Sitter solutions from superstrings
• No-Go theorems for ekpyrosis from ten-dimensional supergravity
• Dimensional Reduction for D3-brane Moduli
• Orbifold Phases of Heterotic Flux Vacua
• Spacetime supersymmetry in low-dimensional perturbative heterotic compactifications
• New Examples of Flux Vacua
• A Note on Heterotic Dualities via M-theory
• Geometric Transitions on non-Kaehler Manifolds
• Breaking supersymmetry with pure spinors
• On Supersymmetric D7-branes in the Warped Deformed Conifold
• Topology and Flux of T-Dual Manifolds with Circle Actions
• Combining High-scale Inflation with Low-energy SUSY
• IIB black hole horizons with five-form flux and KT geometry
• Quantum Corrections to Heterotic Moduli Potentials
• Gauge/Gravity Duality in Heterotic String Theory
• Type IIA orientifold compactification on SU(2)-structure manifolds
• U-folds as K3 fibrations
• New Heterotic Non-Kahler Geometries
• Asymptotic states of the bounce geometry
• An Observational Test of Holographic Inflation
• The Abelian Heterotic Conifold
• The inheritance of energy conditions: Revisiting no-go theorems in string compactifications
• Resurgence of a de Sitter Glauber-Sudarshan State: Nodal Diagrams and Borel Resummation
• Flux Vacua and Modularity for ${\mathbb{Z}}_2$ Symmetric Calabi-Yau Manifolds
• Connecting flux vacua through scalar field excursions
• Supergravity, M theory and Cosmology
• On the Search for Low $W_0$
• U(n) Spectral Covers from Decomposition
• Geometric Constructions of Two Dimensional (0,2) SUSY Theories
• Type IIB Flux Vacua from M-theory via F-theory
• Gauged supergravities and their symmetry-breaking vacua in F-theory
• Super Weyl invariance: BPS equations from heterotic worldsheets
• K3 surfaces without section as double covers of Halphen surfaces, and F-theory compactifications
• Brane gas-driven bulk expansion as a precursor stage to brane inflation
• How a four-dimensional de Sitter solution remains outside the swampland
• Gauge Threshold Corrections for N = 2 Heterotic Local Models with Flux, and Mock Modular Forms
• Five-brane Instantons vs Flux-induced Gauging of Isometries
• Cosmic (super)strings with a time-varying tension
• Moduli stabilization in type II Calabi-Yau compactifications at finite temperature
• Toward the Gravity Dual of Heterotic Small Instantons
• Dynamical SUSY Breaking in Intersecting Brane Models
• Weierstrass meets Enriques
• Gauging Away the Strong CP Problem
• Towards a world-sheet description of doubled geometry in string theory
• Dynamics of warped flux compactifications with backreacting anti-branes
• Goldilocks Models of Higher-Dimensional Inflation (including modulus stabilization)
• Kalb-Ramond backgrounds in ${\alpha }^{\prime }$-complete cosmology
• F-theory models with 3 to 8 U(1) factors on K3 surfaces
• Tadpole conjecture in non-geometric backgrounds
• Anomalous U(1) Mediation in Large Volume Compactification
• Localized Gravity and Large Hierarchy from String Theory ?
• Flux Attractors and Generating Functions
• Resonant non-Gaussianity with equilateral properties
• T-Duality in Gauged Linear Sigma-Models with Torsion
• Freezing of Moduli with Fluxes in Three Dimensions
• Radiative Kähler moduli stabilization
• A Heterotic Flux Background and Calibrated Five-Branes
• Mink${}_3\times S^3$ solutions of type II supergravity
• Heterotic warped Eguchi-Hanson spectra with five-branes and line bundles
• The Dimensional Reduction and Kähler Metric of Forms In Flux and Warping
• Restrictions on infinite sequences of type IIB vacua
• Non-Kahler Resolved Conifold, Localized Fluxes in M-Theory and Supersymmetry
• Neutrino Masses, Baryon Asymmetry, Dark Matter and the Moduli Problem : A Complete Framework
• F-theory models with $U(1)\times {\mathbb{Z}}_2,{\mathbb{Z}}_4$ and transitions in discrete gauge groups
• From F/M-theory to K-theory and back
• M-Theory on Seven Manifolds with G-fluxes
• Dressed elliptic genus of heterotic compactifications with torsion and general bundles
• Moduli Stabilisation in Heterotic Models with Standard Embedding
• Heterotic Kahler/non-Kahler Transitions
• Vector-Like Pairs and Brill--Noether Theory
• Axion and Neutrino physics in a $U(1)$-enhanced supersymmetric model
• A UV complete model of Large N Thermal QCD
• Conformal Invariance of (0,2) Sigma Models on Calabi-Yau Manifolds
• Natural F-theory constructions of Standard Model structure from $E_7$ flux breaking
• Structure of stable degeneration of K3 surfaces into pairs of rational elliptic surfaces
• Threshold corrections in heterotic flux compactifications
• Cosmic eggs to relax the cosmological constant
• Purely non-perturbative AdS vacua and the swampland
• Observational Consequences of Quantum Cosmology
• Special Lagrangian cycles and Calabi-Yau transitions
• Flat equivariant gerbes: holonomies and dualities
• A Landscape of Field Theories
• New supersymmetric index of heterotic compactifications with torsion
• Geometric flows and Strominger systems
• PP-Waves, M-Theory and Fluxes
• Heterotic Hyper-Kahler Flux Backgrounds
• Towards the Massless Spectrum of Non-Kahler Heterotic Compactifications
• Exact Solutions of Einstein-Yang-Mills Theory with Higher-Derivative Coupling
• Heterotic flux backgrounds and their IIA duals
• Theoretical constraints on brane inflation and cosmic superstring radiation
• Three-Point Disc Amplitudes in the RNS Formalism
• Non-duality in three dimensions
• Gauge symmetry breaking with fluxes and natural Standard Model structure from exceptional GUTs in F-theory
• $N=(2,0)$ AdS${}_3$ Solutions of M-theory
• Open-string T-duality and applications to non-geometric backgrounds
• Cosmic superstrings in large volume compactifications: PTAs, LISA and time-varying tension
• An Alternative Interpretation for the Moduli Fields of the Cosmology Associated to Type IIB Supergravity with Fluxes
• Moduli identification methods in Type II compactifications
• Flux Compactification of M-theory on Compact Manifolds with Spin(7) Holonomy
• (2,2) Geometry from Gauge Theory
• 3d N=1 effective supergravity and F-theory from M-theory on fourfolds
• N=1 SUSY AdS4 vacua in IIB SUGRA on group manifolds
• Hidden Sectors in String Theory: Kinetic Mixings, Fifth Forces and Quintessence
• Transitions of Orbifold Vacua
• Fluxes, Gaugings and Gaugino Condensates
• What if string theory has a de Sitter excited state?
• Flux Vacua Attractors in Type II on SU(3)xSU(3) Structure
• Observations on the Space of Four Dimensional String and $M$ theory Vacua
• Non extremal geometries and holographic phase transitions
• Large U(1) charges from flux breaking in 4D F-theory models
• On Building superpotentials in F- GUTs
• Taxonomy of scalar potential with U-dual fluxes
• De Sitter Vacua from a D-term Generated Racetrack Uplift
• F-Theory, Seiberg-Witten Curves and N = 2 Dualities
• Moduli Stabilization in Type IIB Flux Compactifications
• Mink${}_4\times S^2$ Solutions of 10 and 11 Dimensional Supergravity
• DBI Lifshitz Inflation
• W=0 Complex Structure Moduli Stabilization on CM-type K3 x K3 Orbifolds:---Arithmetic, Geometry and Particle Physics---
• T-duality of singular spacetime compactifications in an H-flux
• Nonsupersymmetric brane vacua in stabilized compactifications
• A Note on Fluxes in Six-Dimensional String Theory Backgrounds
• Joint Statistics of Cosmological Constant and SUSY Breaking in Flux Vacua with Nilpotent Goldstino
• de Sitter State in Heterotic String Theory
• Flux vacua in type IIB compactifications on orbifolds: their finiteness and minimal string coupling
• Finite Temperature Behaviour of O'KKLT Model
• Conformally de Sitter space from anisotropic SD3-brane of type IIB string theory
• A method to find $\mathcal{N}=1$ AdS${}_4$ vacua in type IIB
• Probability of Vacuum Stability in Type IIB Multi-Kähler Moduli Models
• Towards natural and realistic $E_7$ GUTs in F-theory
• Heterotic Flux Attractors
• Constraining Inflationary Scenarios with Braneworld Models and Second Order Cosmological Perturbations
• Symplectic formulation of the type IIB scalar potential with U-dual fluxes
• Branes and Fluxes in D=5 Calabi-Yau Compactifications of M-Theory
• Lectures on Naturalness, String Landscape and Multiverse
• IIB horizons
• Meromorphic Flux Compactification
• Towards New Classes of Flux Compactifications
• Generalized Compactification in Heterotic String Theory
• Supersymmetry: The Final Countdown
• Geometric Transitions, Non-Kahler Geometries and String Vacua
• Open-String Non-Associativity in an R-flux Background
• Is inflation from unwinding fluxes IIB?
• A note on transition in discrete gauge groups in F-theory
• The moduli space of hyper-K{ä}hler four-fold compactifications
• Balanced and Aeppli Parameters for the Heterotic Moduli
• Inflation and Leptogenesis in a $U(1)$-enhanced supersymmetric model
• String Loop Moduli Stabilisation and Cosmology in IIB Flux Compactifications
• Fluxes of Courant bracket twisted at the same time by $B$ and $\theta$
• Assisted Fibre Inflation in Perturbative LVS
• BPS States of Strings in 3-Form Flux
• Heterotic type IIA duality with fluxes - towards the complete story
• Bounds on complex structure moduli values for perturbative control
• Reading-off the non-geometric scalar potentials with U-dual fluxes
• Supersymmetric Horizons at the Edge of Effective Field Theory
• Abelian gauge symmetries and fluxed instantons in compactifications of type IIB and F-theory
• The Tadpole Conjecture in Asymptotic Limits
• String theory: an update
• Brane/flux annihilation in double-throat system
• Hypermoduli Stabilization, Flux Attractors, and Generating Functions
• Could Fermion Masses Play a Role in the Stabilization of the Dilaton in Cosmology?
• Dilaton stabilization by massive fermion matter
• Slow-walking inflation
• $d{S}_4$ vacua from matter-coupled 4D N=4 gauged supergravity
• DWSB for heterotic flux compactifications
• D-instantons and Dualities in String Theory
• $\frac{1}{2}$Calabi-Yau 4-folds and four-dimensional F-theory on Calabi-Yau 4-folds with U(1) factors
• On Formulating the Non-Geometric Scalar Potentials
• Singularities of 1/2 Calabi-Yau 4-folds and classification scheme for gauge groups in four-dimensional F-theory
• Dynamical Tadpoles and Weak Gravity Constraints
• New perspectives in the duality of M-theory, heterotic strings, and F-theory
• PhD Thesis: String theory in the early universe
• Heterotic Flux Geometry from Chiral Gauge Dynamics
• A Database of Calabi-Yau Orientifolds and the Size of D3-Tadpoles
• Type IIB at eight derivatives: insights from Superstrings, Superfields and Superparticles
• Beyond Algebraic Superstring Compactification
• Systematic exploration of the non-geometric flux landscape
• Anti-brane singularities as red herrings