Non-singular Bounce from a Phase transition
arXiv:2106.02460
Abstract
The single field Ekpyrosis of Khoury and Steinhardt \cite{khoury}-\cite{khoury1} admits a Jordan frame scalar field with a double well potential. After the end of the ekpyrotic phase, as energy density increases we find a phase transition scenario to a symmetric phase at the conformal coupling fixed point leads to a non-singular bounce in Einstein frame. This scenario could admit a simple prescription for the small value of dark energy.
14 pages
References in corpus (29)
- The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
- Nonperturbative Evolution Equation for Quantum Gravity
- Planck 2013 results. XXIII. Isotropy and statistics of the CMB
- Planck 2018 results. VII. Isotropy and Statistics of the CMB
- Density Perturbations in the Ekpyrotic Scenario
- Local Conformal Symmetry in Physics and Cosmology
- Classically stable non-singular cosmological bounces
- A new kind of cyclic universe
- Fully stable cosmological solutions with a non-singular classical bounce
- Variable gravity Universe
- Inflation after Planck: Judgment Day
- Cyclic Cosmology, Conformal Symmetry and the Metastability of the Higgs
- No fifth force in a scale invariant universe
- Implications of Planck2015 for inflationary, ekpyrotic and anamorphic bouncing cosmologies
- Scaling solutions for Dilaton Quantum Gravity
- Adiabatic Ekpyrosis: Scale-Invariant Curvature Perturbations from a Single Scalar Field in a Contracting Universe
- Evolution of curvature and anisotropy near a nonsingular bounce
- Inertial Spontaneous Symmetry Breaking and Quantum Scale Invariance
- Generating Scale-Invariant Perturbations from Rapidly-Evolving Equation of State
- Nonsingular Ekpyrotic Cosmology with a Nearly Scale-Invariant Spectrum of Cosmological Perturbations and Gravitational Waves
- The anamorphic universe
- Bouncing Universe from Nothing
- What ? Cosmological constraints on the non-minimal coupling constant
- Adiabatic Spectra During Slowly Evolving
- Bounce in GR and higher-order derivative operators
- Generating scale-invariant tensor perturbations in the non-inflationary universe
- Critical scaling in quantum gravity from the renormalisation group
- Conformally Dual to Inflation
- Gravitational Wave During Slowly Evolving