Graceful exit via polymerization of pre-big bang cosmology

Abstract

We consider a phenomenological modification of the Pre Big Bang scenario using ideas from the resolution of curvature singularities in Loop Quantum Cosmology. We show that non-perturbative Loop modifications to the dynamics, arising from the underlying polymer representation, can resolve the graceful exit problem. The curvature and the dilaton energy stay finite at all times, in both the string and Einstein frames. In the string frame, the dilaton tends to a constant value at late times after the bounce.

7 pages, 8 figures. Some clarifications added. To appear on Phys. Rev. D

References in corpus (24)

• Quantum Nature of the Big Bang: Improved dynamics
• Pre-Big-Bang in String Cosmology
• The Pre-Big Bang Scenario in String Cosmology
• Quantum Nature of the Big Bang
• Loop Quantum Cosmology
• Loop quantum cosmology of k=1 FRW models
• Towards a non-singular pre-big bang cosmology
• Non-Singular Bouncing Universes in Loop Quantum Cosmology
• Polymer Quantum Mechanics and its Continuum Limit
• A Model of Graceful Exit in String Cosmology
• Loop quantum cosmology and the k = - 1 RW model
• Graceful exit in quantum string cosmology
• The graceful exit in pre-big bang string cosmology
• Loop Quantum Cosmology in Bianchi Type I Models: Analytical Investigation
• On Singularity Resolution in Quantum Gravity
• Loop Quantum Gravity and the Cyclic Universe
• Loop corrections and graceful exit in string cosmology
• Nonsingular Dilaton Cosmology in the String Frame
• Boundary Conditions in Quantum String Cosmology
• Nonsingular Dilaton Cosmology
• Gravitational waves in non-singular string cosmologies
• Regular Cosmological Examples of Tree-Level Dilaton-Driven Models
• Singularity free dilaton-driven cosmologies and pre-little-bang
• Low-energy graceful exit in anisotropic string cosmology backgrounds

Cited by in corpus (19)

• Loop Quantum Cosmology: A Status Report
• Are loop quantum cosmos never singular?
• Cosmic recall and the scattering picture of Loop Quantum Cosmology
• On $R+\alpha R^2$ Loop Quantum Cosmology
• A solution to the anisotropy problem in bouncing cosmologies
• Bounce Loop Quantum Cosmology Corrected Gauss-Bonnet Gravity
• Bouncing cosmology from Kalb-Ramond Braneworld
• Transcending Big Bang in Loop Quantum Cosmology: Recent Advances
• Polymeric Quantization and Black Hole Thermodynamics
• Inflation from non-minimally coupled scalar field in loop quantum cosmology
• The sounds of science: a symphony for many instruments and voices
• Semiclassical and quantum behavior of the Mixmaster model in the polymer approach for the isotropic Misner variable
• Classical polymerization of the Schwarzschild metric
• Open problems in mathematical physics
• Loop Quantum Cosmology: Physics of Singularity Resolution and its Implications
• Universe from vacuum in loop-string cosmology
• Bouncing scalar field cosmology in the polymeric minisuperspace picture
• Spacetime Singularities in String and its Low Dimensional Effective Theory
• Cosmological backreaction of heavy string states