Evidence for Heterotic - Type I String Duality

Abstract

A study is made of the implications of heterotic string $T$-duality and extended gauge symmetry for the conjectured equivalence of heterotic and Type I superstrings. While at first sight heterotic string world-sheet dynamics appears to conflict with Type I perturbation theory, a closer look shows that Type I perturbation theory ``miraculously'' breaks down, in some cases via novel mechanisms, whenever the heterotic string has massless particles not present in Type I perturbation theory. This strongly suggests that the two theories actually are equivalent. As further evidence in the same direction, we show that the Dirichlet one-brane of type I string theory has the same world-sheet structure as the heterotic string.

harvmac, 21 pages

References in corpus (4)

• Dirichlet-Branes and Ramond-Ramond Charges
• Some Comments On String Dynamics
• Ten Dimensional Heterotic String as a Soliton
• String-String Duality in Ten Dimensions

Cited by in corpus (476)

• New Dimensions at a Millimeter to a Fermi and Superstrings at a TeV
• Heterotic and Type I String Dynamics from Eleven Dimensions
• Supergravity description of field theories on curved manifolds and a no go theorem
• Modeling the fifth dimension with scalars and gravity
• Strong Coupling Expansion Of Calabi-Yau Compactification
• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Small Instantons in String Theory
• Five Dimensional SUSY Field Theories, Non-trivial Fixed Points and String Dynamics
• Cosmological Expansion in the Presence of an Extra Dimension
• Weak Scale Superstrings
• Phase Transitions In M-Theory And F-Theory
• F-theory and Orientifolds
• Superstring Cosmology
• D-branes from M-branes
• D-branes and Short Distances in String Theory
• Extremal Transitions and Five-Dimensional Supersymmetric Field Theories
• AdS/CFT and gravity
• The Dirichlet Super-p-Branes in Ten-Dimensional Type IIA and IIB Supergravity
• Two-Dimensional Black Hole and Singularities of CY Manifolds
• Small $E_8$ Instantons and Tensionless Non-critical Strings
• U-duality and M-Theory
• Duality of Type II 7-branes and 8-branes
• TeV Scale Superstring and Extra Dimensions
• Self-tuning flat domain walls in 5d gravity and string theory
• New Formulations of D=10 Supersymmetry and D8-O8 Domain Walls
• On the Possibility of Large Axion Decay Constants
• 6d Conformal Matter
• String Theory and the Path to Unification: A Review of Recent Developments
• Gauge Fields and D-branes
• On tadpoles and vacuum redefinitions in String Theory
• An Sl(2,Z) Multiplet of Nine-Dimensional Type II Supergravity Theories
• The D4-D8 Brane System and Five Dimensional Fixed Points
• The Dirichlet Super-Three-Brane in Ten-Dimensional Type IIB Supergravity
• Branes and Six Dimensional Supersymmetric Theories
• Superstring Scattering from D-Branes
• 5-dim Superconformal Index with Enhanced En Global Symmetry
• Black Holes and Solitons in String Theory
• Signatures of Short Distance Physics in the Cosmic Microwave Background
• F-Theory at Constant Coupling
• Anomalies, Dualities, and Topology of D=6 N=1 Superstring Vacua
• D-branes, Monopoles and Nahm Equations
• Lectures on Superstring and M Theory Dualities
• Aspects of Type I String Phenomenology
• Anomalies, Branes, and Currents
• p-brane Solitons in Maximal Supergravities
• Lectures on D-branes
• Loop-Corrected Compactifications of the Heterotic String with Line Bundles
• Two-Loop Superstrings VI: Non-Renormalization Theorems and the 4-Point Function
• D-brane probes, RR tadpole cancellation and K-theory charge
• Strings as Solitons & Black Holes as Strings
• Supersymmetric Z_N times Z_M Orientifolds in 4D with D-Branes at Angles
• The E_{11} origin of all maximal supergravities
• Comparing D-branes to Black-branes
• Time-dependent Orbifolds and String Cosmology
• Large radii and string unification
• Supersymmetric AdS_6 via T-duality
• D-brane Wess--Zumino actions, T-duality and the cosmological constant
• String Duality--A Colloquium
• Residues and World-Sheet Instantons
• Supersymmetric Pati-Salam Models from Intersecting D6-branes: A Road to the Standard Model
• Black Hole Microstates and Attractor Without Supersymmetry
• Orbifolds of M-theory
• Closed String Amplitudes as Single-Valued Open String Amplitudes
• D-branes and T-duality
• Gauge couplings in four-dimensional Type I string orbifolds
• Fibre Bundles and Generalised Dimensional Reduction
• Heterotic / type I duality and D-brane instantons
• 5d quivers and their AdS(6) duals
• Supersymmetry breaking, open strings and M-theory
• Domain Walls from Anti-de Sitter Spacetime
• Two-loop superstrings and S-duality
• Matrix Theory
• Partial breaking of supersymmetry, open strings and M-theory
• Three-dimensional N=6 SCFT's and their membrane dynamics
• Theory and Phenomenology of Type I strings and M-theory
• Maximally supersymmetric solutions of ten- and eleven-dimensional supergravities
• Geometric Engineering, Mirror Symmetry and 6d (1,0) -> 4d, N=2
• The SO(32) Heterotic String on a K3 Surface
• Gravitational Duality, Branes and Charges
• Comments on Gepner Models and Type I Vacua in String Theory
• Branes and the Gauge Hierarchy
• Heterotic - type I superstring duality and low-energy effective actions
• A Non-Supersymmetric Open String Theory and S-Duality
• Massive Branes
• A Note on Toroidal Compactifications of the Type I Superstring and Other Superstring Vacuum Configurations with 16 Supercharges
• Heterotic M(atrix) Strings and Their Interactions
• On Gauge Bosons in the Matrix Model Approach to M Theory
• Strong/Weak Coupling Duality Relations for Non-Supersymmetric String Theories
• Domain Walls in Massive Supergravities
• Aspects of N=1 Type I-Heterotic Duality in Four Dimensions
• Heterotic Matrix String Theory
• Multi-Gluon Scattering in Open Superstring Theory
• Stable non-BPS states in string theory: a pedagogical review
• Duality without Supersymmetry: The Case of the SO(16)xSO(16) String
• Instanton sums and five-dimensional gauge theories
• A Chiral N=1 Type I Vacuum in Four Dimensions and Its Heterotic Dual
• Life at the Interface of Particle Physics and String Theory
• Large-Volume String Compactifications, Revisited
• Type IIB Orientifolds, F-theory, Type I Strings on Orbifolds and Type I - Heterotic Duality
• 5-branes, KK-monopoles and T-duality
• Discrete theta and the 5d superconformal index
• Interactions of strings and D-branes from M theory
• AdS_6 Interpretation of 5d Superconformal Field Theories
• Brane Surgery
• Type IIB Orientifolds with NS-NS Antisymmetric Tensor Backgrounds
• Zero and One-dimensional Probes with N=8 Supersymmetry
• Ghost D-branes
• Supersymmetric (non-)Abelian Bundles in the Type I and SO(32) Heterotic String
• Non-Supersymmetric Type I Strings with Zero Vacuum Energy
• Heterotic and bosonic string amplitudes via field theory
• Threshold effects in open-string theory
• Effective Action and Soft Supersymmetry Breaking for Intersecting D-brane Models
• Four-dimensional N=1 Z_N X Z_M Orientifolds
• Gauge Theories from Orientifolds and Large N Limit
• Non-Abelian Born-Infeld Action and Type I - Heterotic Duality (II): Nonrenormalization Theorems
• Gravitational Radiation of Rolling Tachyon
• On Domain-Wall/QFT Dualities in Various Dimensions
• Lectures on Non-BPS Dirichlet branes
• (Non-)Abelian Gauged Supergravities in Nine Dimensions
• Anomalous D-brane and orientifold couplings from the boundary state
• M(atrix) Theory on an Orbifold and Twisted Membrane
• Branes, Orientifolds and the Creation of Elementary Strings
• Defect Branes
• Orbifolds and Solitons
• Resolutions of C^n/Z_n Orbifolds, their U(1) Bundles, and Applications to String Model Building
• Gauge Unification in Highly Anisotropic String Compactifications
• Heterotic/Type II Triality and Instantons on $K_3$
• Stable non-BPS D-branes in Type I string theory
• Kac-Moody Spectrum of (Half-)Maximal Supergravities
• 4-D Chiral N=1 Type I Vacua With And Without D5-Branes
• Massive type IIA string theory cannot be strongly coupled
• Intersections involving waves and monopoles in eleven dimensions
• Six Gluon Open Superstring Disk Amplitude, Multiple Hypergeometric Series and Euler-Zagier Sums
• IIA Ten-forms and the Gauge Algebras of Maximal Supergravity Theories
• Amplitude relations in heterotic string theory and Einstein-Yang-Mills
• Open Heterotic Strings
• Seven-branes and Supersymmetry
• Spectra of 4D, N=1 Type I String Vacua on Non-Toroidal CY Threefolds
• Amplitude for N-Gluon Superstring Scattering
• Lectures on Orientifolds and Duality
• Low-Scale Closed Strings and their Duals
• On M-9-branes
• The Heterotic Life of the D-particle
• Type IIB Seven-brane Solutions from Nine-dimensional Domain Walls
• Potentials between D-Branes in a Supersymmetric Model of Space-Time Foam
• Super no-scale models in string theory
• A Realistic World from Intersecting D6-Branes
• Vacua of M-theory and N=2 strings
• Power Towers of String Instantons for N=1 Vacua
• Supersymmetric Domain Walls from Metrics of Special Holonomy
• Radiative Symmetry Breaking in Brane Models
• Higher Derivative Couplings and Heterotic-Type I Duality in Eight Dimensions
• Membrane tension and manifest IIB S-duality
• Running of Soft Parameters in Extra Space-Time Dimensions
• Non-BPS States in Heterotic - Type IIA Duality
• The D8-Brane Tied up: String and Brane Solutions in Massive Type IIA Supergravity
• Compactness of Brane Moduli and the String Lamppost Principle in $d>6$
• Open Descendants of Z_2\times Z_2 Freely-Acting Orbifolds
• String Creation and Heterotic-Type I' Duality
• Chiral Symmetry from Type IIA Branes
• D-Matter
• Exotic instanton counting and heterotic/type I' duality
• E8 Gauge Theory, and a Derivation of K-Theory from M-Theory
• Realistic Yukawa Textures and SUSY Spectra from Intersecting Branes
• Brane World Scenarios and the Cosmological Constant
• Magnetic Backgrounds and Noncommutative Field Theory
• A Three-Family SU(6) Type I Compactification
• The Small $E_8$ Instanton and the Kraft Procesi Transition
• Brane to bulk supersymmetry breaking and radion force at micron distances
• Discrete Symmetries, Weak Coupling Conjecture and Scale Separation in AdS Vacua
• Solving the Hierarchy Problem without Supersymmetry or Extra Dimensions: An Alternative Approach
• M-theory and E10: Billiards, Branes, and Imaginary Roots
• Massive IIA String Theory and Matrix Theory Compactification
• Time and space dependent backgrounds from nonsupersymmetric strings
• AdS${}_7$/CFT${}_6$ with orientifolds
• String instantons, fluxes and moduli stabilization
• Open string topological amplitudes and gaugino masses
• Nonabelian gauge field dynamics on matrix D-branes
• On Four Dimensional N=1 Type I Compactifications
• Microstates of Non-supersymmetric Black Holes
• Bound States of Type I' D-particles and Enhanced Gauge Symmetry
• String Dualities in the Presence of Anomalous U(1) Symmetries
• M-brane intersections from worldvolume superalgebras
• Standard-Like Model Building on Type II Orientifolds
• Closed strings as single-valued open strings: A genus-zero derivation
• 5d superconformal indices at large N and holography
• Localized modes at a D-brane--O-plane intersection and heterotic Alice strings
• Moduli Spaces and Brane Solitons for M-Theory Compactifications on Holonomy G_2 Manifolds
• Ricci-Flat Branes
• Quantum Gravity: A Brief History of Ideas and Some Prospects
• Dynamical Tadpoles, Stringy Cobordism, and the SM from Spontaneous Compactification
• Massive U(1)s and Heterotic Five-Branes on K3
• The E(11) origin of all maximal supergravities - the hierarchy of field-strengths
• Three Generations in Type I Compactifications
• Multiple Realisations of N=1 Vacua in Six Dimensions
• The Moduli Space and M(atrix) Theory of 9d N=1 Backgrounds of M/String Theory
• UV Completions for Non-Critical Strings
• Monopoles in String Theory
• Towards Low Energy Physics from the Heterotic String
• A Three-Family $SU(4{)}_c\otimes SU(2{)}_w\otimes U(1)$ Type I Vacuum
• Discrete torsion in non-geometric orbifolds and their open-string descendants
• D-Branes in the Green-Schwarz Formalism
• Heterotic versus Type I
• Gauss-Bonnet gravity renders negative tension braneworlds unstable
• Large volume susy breaking with a solution to the decompactification problem
• The Super D9-Brane and its Truncations
• D-branes in non-tachyonic 0B orientifolds
• Vertical versus Diagonal Dimensional Reduction for p-branes
• Aspects of T-duality in Open Strings
• Stabilizing moduli with thermal matter and nonperturbative effects
• Some interesting violations of the Breitenlohner-Freedman bound
• Coupling of branes and normalization of effective actions in string/M-theory
• Heterotic SO(32) model building in four dimensions
• D=10 super-D9-brane
• S-duality Improved Superstring Perturbation Theory
• Closed String Tachyons and Semi-Classical Instabilities
• Strings, Branes and Extra Dimensions
• Sigma-model anomalies in compact type IIB orientifolds and Fayet-Iliopoulos terms
• Exploring the SO(32) Heterotic String
• Heterotic-string amplitudes at one loop: modular graph forms and relations to open strings
• Non-Abelian Born-Infeld Action and Type I - Heterotic Duality (I): Heterotic F^6 Terms at Two Loops
• Romans Supergravity from Five-Dimensional Holograms
• Trilepton Events and B_s -> mu^+ mu^- : No-lose for mSUGRA at the Tevatron?
• Equations of the (2,0) Theory and Knitted Fivebranes
• M-theory and Gauged Supergravities
• Non-Abelian Brane Worlds: The Heterotic String Story
• Notes on Supersymmetric Gauge Theories in Five and Six Dimensions
• Strong coupling unification and extra dimensions
• On Heterotic Orbifolds, M Theory and Type I' Brane Engineering
• Multiple anomalous U(1)s in heterotic blow-ups
• AdS5 compactifications with punctures in massive IIA supergravity
• Anomalies of the SO(32) five-brane and their cancellation
• Type IIA Pati-Salam Flux Vacua
• Non-perturbative triality in heterotic and type II N=2 strings
• Dynamical D4-D8 and D3-D7 branes in supergravity
• Duality of N=2 Heterotic -- Type I Compactifications in Four Dimensions
• D-strings in unconventional type I vacuum configurations
• Duality in String Theory
• On Large N Gauge Theories from Orientifolds
• On Mellin Amplitudes in SCFTs with Eight Supercharges
• Single-sided domain walls in M-theory
• Flipped and Unflipped SU(5) as Type IIA Flux Vacua
• Orientifold D-String in the Source of the Kerr Spinning Particle
• Bound States of Type I D-Strings
• Comments on Orientifolds without Vector Structure
• Probing the Higgs branch of 5d fixed point theories with dual giant gravitons in AdS(6)
• Hagedorn transition and chronology protection in string theory
• Anomaly cancellation in D=4, N=1 orientifolds and linear/chiral multiplet duality
• On the Complementarity of F-theory, Orientifolds, and Heterotic Strings
• Lectures on Heterotic-Type I Duality
• Orientifolds, RG Flows, and Closed String Tachyons
• Massless D-strings and moduli stabilization in type I cosmology
• New Supersymmetric String Theories from Discrete Theta Angles
• Monstrous String-String Duality
• Back to Heterotic Strings on ALE Spaces: Part I -- Instantons, 2-groups and T-duality
• Non-supersymmetric AdS and the Swampland
• Effective descriptions of branes on non-geometric tori
• Strings at Finite Temperature: Wilson Lines, Free Energies, and the Thermal Landscape
• Melvin Background in Heterotic Theories
• USp(2k) Matrix Model: Nonperturbative Approach to Orientifolds
• Unification of String Dualities
• Classical and Quantum Aspects of BPS Black Holes in N=2, D=4 Heterotic String Compactifications
• Matching the BPS Spectra of Heterotic - Type I - Type I' Strings
• New Supersymmetric Vacua for N=4, D=4 Gauged Supergravity
• Orientifold and F-theory Duals of CHL Strings
• Anomaly Free Non-Supersymmetric Large $N$ Gauge Theories from Orientifolds
• More Ricci-flat branes
• Relaxed super self-duality and N = 4 SYM at two loops
• Effects of anisotropy and spatial curvature on the pre-big bang scenario
• Two Conjectures on Gauge Theories, Gravity, and Infinite Dimensional Kac-Moody Groups
• Anisotropic Type I String Compactification, Winding Modes and Large Extra Dimensions
• QED and String Theory
• N=2 Type I-Heterotic Duality and Higher Derivative F-Terms
• The Elliptic curves in gauge theory, string theory, and cohomology
• Type I' and Real Algebraic Geometry
• On Codimension-one Vacua and String Theory
• A New Class of Supersymmetric Orientifolds with D-Branes at Angles
• Matrix Description of (1,0) Theories in Six Dimensions
• Supersymmetric Pair Correlation Function of Wilson Loops
• Hierarchies of RG flows in 6d $(1,0)$ massive E-strings
• Type I/heterotic duality and M-theory amplitudes
• Mass scales, supersymmetry breaking and open strings
• Quasi-Supersymmetric $G^3$ Unification from Intersecting D6-Branes on Type IIA Orientifolds
• Non-BPS D-branes and enhanced symmetry in an asymmetric orbifold
• Arguments for F-theory
• On the stability of open-string orbifold models with broken supersymmetry
• Non-Perturbative Gravitational Corrections in a Class of N=2 String Duals
• Remarks on T-duality for open strings
• Dipole Moments of Black Holes and String States
• Wilson Lines and T-Duality in Heterotic M(atrix) Theory
• Instantons, Twistors, and Emergent Gravity
• Non-tachyonic Scherk-Schwarz compactifications, cosmology and moduli stabilization
• Aspects of Type I - Type II - Heterotic Triality in Four Dimensions
• M(atrix) Theory on T5/Z2 Orbifold and Five-Branes
• Transitions Between Flux Vacua
• Galilean anti-de-Sitter spacetime in Romans theory
• Exponentially suppressed cosmological constant with enhanced gauge symmetry in heterotic interpolating models
• Domain Walls with Strings Attached
• Exact thresholds and instanton effects in D=3 string theories
• Orientifold dual for stuck NS5 branes
• Freedom and Constraints in the K3 Landscape
• A Matrix Model for Heterotic $Spin(32)/Z_2$ and Type I String Theory
• Discrete moduli for Type I compactifications
• On The Structure Of The Chan-Paton Factors For D-Branes In Type II Orientifolds
• ADHM Construction of (Anti-)Self-dual Instantons in Eight Dimensions
• Massive T-duality in six dimensions
• From the Type I String to M-theory: A Continuous Connection
• An Index for Ray Operators in 5d $E_n$ SCFTs
• On the D(-1)/D7-brane systems
• D-instanton and polyinstanton effects from type I' D0-brane loops
• Dualities of Fields and Strings
• Geometric Transitions on non-Kaehler Manifolds
• D-branes and boundary states in closed string theories
• On the Orientifolding of Type II NS-Fivebranes
• Benchmarks on the brane
• Time warps
• Brane Actions and String Dualities
• Modular Curves and the Refined Distance Conjecture
• Thirty years of Erice on the brane
• Variations of the Hidden Sector in a Realistic Intersecting Brane Model
• E10 Orbifolds
• A 10-form Gauge Potential and an M-9-brane Wess-Zumino Action in Massive 11D Theory
• T-duality, Non-geometry and Lie Algebroids in Heterotic Double Field Theory
• Non-Abelian black holes in string theory
• Sigma-model symmetry in orientifold models
• E(lementary) Strings in Six-Dimensional Heterotic F-Theory
• Exact effective interactions and 1/4-BPS dyons in heterotic CHL orbifolds
• Creation of Strings in D-particle Quantum Mechanics
• Gravitons and the Drell-Hearn-Gerasimov Sum Rule
• The Non-Perturbative SO(32) Heterotic String
• On Algebraic Singularities, Finite Graphs and D-Brane Gauge Theories: A String Theoretic Perspective
• Domain Walls on the Brane
• Static Charges in the Low-Energy Theory of the S-Duality Twist
• Infinity Cancellation, Type I' Compactification and String S-Matrix Functional
• Unifying the 6D $\mathcal{N}=(1,1)$ String Landscape
• Composite p-Branes in Diverse Dimensions
• A New String in Ten Dimensions?
• Eleven Dimensions from the Massive D-2-brane
• Warped Compactifications and AdS/CFT
• Target-Space Duality in Heterotic and Type I Effective Lagrangians
• Supersymmetric probes in warped $Ad{S}_6$
• Delocalized Supergravity Solutions for Brane/Anti-brane Systems and their Bound States
• New Supersymmetric String Moduli Spaces from Frozen Singularities
• From Topology to Generalised Dimensional Reduction
• A brief guide to p-branes
• The Spacetime Superalgebras in a Massive IIA Background via Brane Probes
• Cosmological Quantum String Vacua and String-String Duality
• On Boundaries, Charges and Fermi Fields
• D-Branes and Physical States
• Gauged Supergravities from Spherical Reductions
• Closed Strings from SO(8) Yang-Mills Instantons
• Blowup Equations for Little Strings
• Domain Walls and the Creation of Strings
• Target-space anomalies and elliptic indices in heterotic orbifolds
• A Heterotic Flux Background and Calibrated Five-Branes
• Open-string models with broken supersymmetry
• The Normalization of Perturbative String Amplitudes: Weyl Covariance and Zeta Function Regularization
• Towards a classification of branes in theories with eight supercharges
• Matrix Strings, Compactification Scales and Hagedorn Transition
• Current Density Distributions and a Supersymmetric Action for Interacting Brane Systems
• Confinement and the Short Type I' Flux Tube
• Heterotic Matrix String Theory and Riemann Surfaces
• E_8 flavour multiplets
• Non-BPS States and Heterotic - Type I' Duality
• Qualitative Analysis of Isotropic Curvature String Cosmologies
• Realistic Type IIB Supersymmetric Minkowski Flux Vacua
• MSSM via Pati-Salam from Intersecting Branes on $T^6/({\mathbb{Z}}_2\times {\mathbb{Z}}_2^{\prime })$
• Heterotic M(atrix) theory at generic points in Narain moduli space
• Spacetime Reduction of Large N Flavor Models: A Fundamental Theory of Emergent Local Geometry?
• On Fractional Instanton Numbers in Six Dimensional Heterotic E8 x E8 Orbifolds
• String-String triality for d=4, Z_2 orbifolds
• Worldsheet Description of Tachyon Condensation in Open String Theory
• Spacetime-Filling Branes in Ten and Nine Dimensions
• Topological Field Theory and Second-Quantized Five-Branes
• Superstrings from Supergravity
• Note on (D6,D8) Bound State, Massive Duality and Non-commutativity
• Solutions to the Massive HLW IIA Supergravity
• On M-Theory and the Symmetries of Type II String Effective Actions
• Magnetic Cosmic Strings of N=1, D=4 Supergravity with Cosmological Constant
• An approach to the classification of p-brane solitons
• Path integral evaluation of Dbrane amplitudes
• Degenerations of K3, Orientifolds and Exotic Branes
• Universal Calabi-Yau Algebra: Towards an Unification of Complex Geometry
• Gauge and gravitational interactions of non-BPS D-particles
• Hidden Symmetry Unmasked: Matrix Theory and E(11)
• Dilatonic Domain Walls and Curved Intersecting Branes
• Thermal Duality Transformations and the Canonical Ensemble: The Deconfining Long String Phase Transition
• Path integral evaluation of Dbrane amplitudes
• Real weights, bound states and duality orbits
• Towards Geometric D6-Brane Model Building on non-Factorisable Toroidal ${\mathbb{Z}}_4$-Orbifolds
• On Fractional Instanton Numbers in Six Dimensional Heterotic E_8 x E_8 Orbifolds
• Non-Supersymmetric String Theory
• On the Compactification of Type IIA String Theory
• Non-Abelian T-duality for open strings
• Orientifolds: The Unique Personality Of Each Spacetime Dimension
• Little Theories in Six and Seven Dimensions
• Extended Objects in MQCD
• On cosmologically induced hierarchies in string theory
• On the (0,4) Conformal Field Theory of the Throat
• Four-dimensional SYM probes in wrapped M5-brane backgrounds
• Complex Geometry and Supergeometry
• Superstring 'ending' on super-D9-brane: a supersymmetric action functional for the coupled brane system
• Closed superstring moduli tree-level two-point scattering amplitudes in Type IIB orientifold on $T^6/(Z_2\times Z_2)$
• Stable D8-branes and Tachyon Condensation in Type 0 Open String Theory
• Brane plus Bulk Supersymmetry in Ten Dimensions
• D-brane annihilation, renormalization-group flow and non-linear $\sigma$-model for the ADHM construction
• Dirac branes for Dirichlet branes: Supergravity actions
• TCFHs, hidden symmetries and type II theories
• A Lightning Introduction to String Theory
• Aspects of D-brane actions
• TASI Lectures on Compatification and Duality
• D=4, N=1, Type IIA Orientifolds
• The D0$-$D8 system revisited
• 11d Electric-Magnetic Duality and the Dbrane Spectrum
• On the Algebraic K-theory of The Massive D8 and M9 Branes
• Toward Second-Quantization of D5-Brane
• Cosmological Constant Seesaw in String/M-Theory
• Prepotential, Mirror Map and F-Theory on K3
• Anatomy of a Duality
• A note on the RG flow in (N=1, D=4) Supergravity and applications to Z_3 orbifold/orientifold compactification
• Generalised Penrose Limits and PP-Waves
• Two dimensional RG flows and Yang-Mills instantons
• Recent Trends in Superstring Phenomenology
• Consistency between 11D and U-duality
• Chern-Simons theory, decomposition, and the A model
• Central charges of wrapped M5-brane backgrounds
• Exactly stable non-BPS spinors in heterotic string theory on tori
• A comment on 4d and 5d BPS states
• String Cosmology: A Review
• Probing Type I' String Theory Using D0 and D4-Branes
• Issues on tadpoles and vacuum redefinitions in String Theory
• Non-Perturbative Structure in Heterotic Strings from Dual F-Theory Models
• Umbral Moonshine and String Duality
• Supersymmetric dyonic black holes of IIA string on Six Torus
• Effects in Gauge Theories and a Harmonic Function on $E_{10}$
• Nonperturbative Formulations of Superstring Theory
• At the End of the World: Local Dynamical Cobordism
• Heterotic Ouroboros
• $p$-Branes with $Ad{S}_{p+1}$ vacuum as models of $R^2$ gravity
• Integrability, Duality and Strings
• Gravitational Waves in Braneworld Scenarios with AdS Background
• Exact Solutions to Supergravity
• Calculation of Fayet-Iliopoulos D-term in type I string theory revisited: T^6/Z_3 orbifold case
• SUSY/SUGRA/String Phenomenology
• Agujeros negros clasicos y cuanticos en teoria de cuerdas
• One-loop and D-instanton corrections to the effective action of open string models
• On M-theory on Real Toric Fibrations
• Euclidean Time Formulation for the Superstring Ensembles: Perturbative Canonical Ensemble with Neveu-Schwarz B Field Backgrounds
• Thermal Duality and the String Canonical Ensemble
• Introduction to M Theory
• Twisted heterotic/type I duality
• Introduction to D-Branes, with Applications
• On Heterotic/Type I Duality in d=8
• D-branes, Supersymmetry Breaking, and Neutrinos
• Open Strings and Heterotic Instantons
• Aspects of N=1 String Dynamics
• NS Branes in Type I Theory
• Joseph Polchinski: A Biographical Memoir
• Heterotic Type I Strings at High Temperature
• Non-Perturbative States in Superstring Theories
• Holographic RG flows in N=4 SCFTs from half-maximal gauged supergravity
• The mass formula for a fundamental string as a BPS solution of a D-brane's worldvolume
• Domain walls inside localised orientifolds
• Extended Objects from Warped Compactifications of M Theory
• On M-9-branes and their dimensional reductions
• Several new actions of $p$-branes based on bulk scalar fields
• Aspetti non perturbativi della Teoria delle Stringhe
• Off-shell Crosscap State and Orientifold Planes with Background Dilatons
• D-instantons and Dualities in String Theory
• Instanton corrections to the effective action of the CHL string and its type I dual
• CHL Compactifications Revisited
• Quantized D(-2)brane Charge and the Cosmological Constant
• Notes on unoriented D-brane instantons
• Flux Parameter Spaces in Type II Vacua
• MSSM-like AdS Flux Vacua with Frozen Open-string Moduli
• Superstrings beyond one loop