A string scenario for inflationary cosmology

Abstract

We describe a scenario for inflation in the framework of non-critical string theory, which does not employ an inflaton field. There is an exponential expansion of the volume of the Universe, induced by enormous entropy production in the early stages of cosmological evolution. This is associated with the loss of information carried by global string modes that cross the particle horizon. It is the same loss of information that induces irreversible time flow when target time is identified with the world-sheet Liouville mode. The resulting scenario for inflation is described by a string analogue of the Fokker-Planck equation that incorporates diffusion and dissipative effects. Cosmological density perturbations are naturally small.

17 pages LATEX

Cited by in corpus (40)

• Derivation of a Vacuum Refractive Index in a Stringy Space-Time Foam Model
• Quantum-Gravitational Diffusion and Stochastic Fluctuations in the Velocity of Light
• D-Brane Recoil and Logarithmic Operators
• WMAPing the Universe: Supersymmetry, Dark Matter, Dark Energy, Proton Decay and Collider Physics
• Matrix D-brane Dynamics, Logarithmic Operators and Quantization of Noncommutative Spacetime
• A Microscopic Liouville Arrow of Time
• Liouville Cosmology at Zero and Finite Temperatures
• D-Brane Recoil Mislays Information
• On the Space-Time Uncertainty Relations of Liouville Strings and D Branes
• Smoothly evolving Supercritical-String Dark Energy relaxes Supersymmetric-Dark-Matter Constraints
• How Large are Dissipative Effects in Non-Critical Liouville String Theory?
• Quantum Decoherence in a D-Foam Background
• Decoherent Scattering of Light Particles in a D-Brane Background
• Quantum-Gravity Induced Lorentz Violation and Dynamical Mass Generation
• Vacuum Energy and Cosmological Supersymmetry Breaking in Brane Worlds
• Dark Matter, Proton Decay and Other Phenomenological Constraints in $\mathcal{F}$-SU(5)
• Cosmological Evolution in a Type-0 String Theory
• Dissipative Liouville Cosmology: A Case Study
• Brany Liouville Inflation
• Supersymmetry Signals of Supercritical String Cosmology at the Large Hadron Collider
• Decoherence and CPT Violation in a Stringy Model of Space-Time Foam
• Quantum Phase Space from String Solitons
• Non-Critical Liouville String Escapes Constraints on Generic Models of Quantum Gravity
• Matrix Sigma-models for Multi D-brane Dynamics
• Dynamics and constraints of the dissipative Liouville cosmology
• Stable vs Unstable Vortices in SQCD
• On `Graceful Exit' from inflationary phase in two-dimensional Liouville String Cosmology
• Non-linear Schroedinger Dynamics of Matrix D-branes
• Supercritical String Cosmology drains the Swampland
• Supergravity and Superstring Signatures of the One-Parameter Model at LHC
• The Search for a Realistic String Model at LHC
• Super Heavy Dark Matter Anisotropies from D-particles in the Early Universe
• Stringy WIMP Detection and Annihilation
• A Note on Modulus-dominated SUSY-breaking
• Probes for String-Inspired Foam, Lorentz, and CPT Violations in Astrophysics
• Spacetime Quantization from Non-abelian D-particle Dynamics
• Non-Perturbative Formulation of Non-Critical String Models
• A Novel Foamy Origin for Singlet Fermion Masses
• Constraints to Lorentz violation and ultrahigh-energy electrons in D-foamy space-times
• Constraining super-critical string/brane cosmologies with astrophysical data