The Standard Model from String Theory: What Have We Learned?
arXiv:2401.01939 · doi:10.1146/annurev-nucl-102622-012235
Abstract
Amidst all candidates of physics beyond the Standard Model, string theory provides a unique proposal for incorporating gauge and gravitational interactions. In string theory, a four-dimensional theory that unifies quantum mechanics and gravity is obtained automatically if one posits that the additional dimensions predicted by the theory are small and curled up, a concept known as compactification. The gauge sector of the theory is specified by the topology and geometry of the extra dimensions, and the challenge is to reproduce all the features of the Standard Model of Particle Physics from them. We review the state-of-the-art in reproducing the Standard Model from string compactifications, together with the lessons drawn from this fascinating quest. We describe novel scenarios and mechanisms that string theory provides to address some of the Standard Model puzzles, as well as the most frequent signatures of new physics that could be detected in future experiments. We finally comment on recent developments that connect, in a rather unexpected way, the Standard Model with Quantum Gravity, and that may change our field theory notion of naturalness.
arXiv comment38 pages, 1 figure; v2 some improvements and references added
References in corpus (68)
- A Large Mass Hierarchy from a Small Extra Dimension
- The Hierarchy Problem and New Dimensions at a Millimeter
- New Dimensions at a Millimeter to a Fermi and Superstrings at a TeV
- de Sitter Vacua in String Theory
- Hierarchies from Fluxes in String Compactifications
- Heterotic and Type I String Dynamics from Eleven Dimensions
- String Axiverse
- Evidence for F-Theory
- Symmetries and Strings in Field Theory and Gravity
- Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
- The Swampland: Introduction and Review
- Flux compactifications in string theory: a comprehensive review
- Extra Spacetime Dimensions and Unification
- Grand Unification at Intermediate Mass Scales through Extra Dimensions
- Model-Independent Analysis of Soft Terms in Effective Supergravity and in String Theory
- Toward Realistic Intersecting D-Brane Models
- Towards a Theory of Soft Terms for the Supersymmetric Standard Model
- A Note on the Green - Schwarz Mechanism in Open - String Theories
- Chiral Four-Dimensional N=1 Supersymmetric Type IIA Orientifolds from Intersecting D6-Branes
- Three-Family Supersymmetric Standard-like Models from Intersecting Brane Worlds
- Holography and Compactification
- Spacetime Instanton Corrections in 4D String Vacua - The Seesaw Mechanism for D-Brane Models
- Lectures on the Swampland Program in String Compactifications
- A Mini-Landscape of Exact MSSM Spectra in Heterotic Orbifolds
- Scales and hierarchies in warped compactifications and brane worlds
- String Theory and the Path to Unification: A Review of Recent Developments
- An SU(5) Heterotic Standard Model
- D-brane Instantons in Type II String Theory
- Supersymmetric Standard Model Spectra from RCFT orientifolds
- Lectures on F-theory compactifications and model building
- Soft Supersymmetry Breaking in Calabi-Yau Orientifolds with D-branes and Fluxes
- Flux-induced SUSY-breaking soft terms
- Flux-induced SUSY-breaking soft terms on D7-D3 brane systems
- Dynamical Dark Matter: I. Theoretical Overview
- Weak Gravity Conjecture from Unitarity and Causality
- The Weak Gravity Conjecture: A Review
- Amplitudes' Positivity, Weak Gravity Conjecture, and Modified Gravity
- Flavor Hierarchy From F-theory
- G-flux in F-theory and algebraic cycles
- G_4 flux, chiral matter and singularity resolution in F-theory compactifications
- Euclidean wormholes, baby universes, and their impact on particle physics and cosmology
- Models of Particle Physics from Type IIB String Theory and F-theory: A Review
- The Standard Model on a D-brane
- Chiral Supersymmetric Standard Model Spectra from Orientifolds of Gepner Models
- Towards a Non-Supersymmetric String Phenomenology
- Basic results in Vacuum Statistics
- Dynamical Dark Matter: II. An Explicit Model
- String universality in ten dimensions
- Toric Geometry and Enhanced Gauge Symmetry of F-Theory/Heterotic Vacua
- Non-perturbative effects on seven-brane Yukawa couplings
- Branes and the Swampland
- Positivity Bounds and the Massless Spin-2 Pole
- Higher-Form Symmetries and Their Anomalies in M-/F-Theory Duality
- String Universality and Non-Simply-Connected Gauge Groups in 8d
- On Algorithmic Universality in F-theory Compactifications
- Compactified String Theories -- Generic Predictions for Particle Physics
- Milli-Charged Dark Matter in Quantum Gravity and String Theory
- Massive Neutrinos and (Heterotic) String Theory
- Seesaw Neutrinos from the Heterotic String
- Minimal Standard Heterotic String Models
- A Quadrillion Standard Models from F-theory
- Neutrino Masses in Superstring Derived Standard--like Models
- Origin of family symmetries
- F-theory, SO(32) and Toric Geometry
- One Loop to Rule Them All: Eight and Nine Dimensional String Vacua from Junctions
- Towards the Standard Model in F-theory
- Local String Models and Moduli Stabilisation
- Dark Glueballs and their Ultralight Axions