Massive scalar field evolution in de Sitter
arXiv:1607.00334 · doi:10.1007/JHEP01(2017)133
Abstract
The behaviour of a massive, non-interacting and non-minimally coupled quantised scalar field in an expanding de Sitter background is investigated by solving the field evolution for an arbitrary initial state. In this approach there is no need to choose a vacuum in order to provide a definition for particle states. We conclude that the expanding de Sitter space is a stable equilibrium configuration under small perturbations of the initial conditions. Depending on the initial state, the energy density can approach its asymptotic value from above or below, the latter of which implies a violation of the weak energy condition. The backreaction of the quantum corrections can therefore lead to a phase of super-acceleration also in the non-interacting massive case.
22 pages, 5 figures. v2: References added. v3: Expanded text, added references. Version accepted by JHEP
References in corpus (26)
- Thermodynamics of Spacetime: The Einstein Equation of State
- Towards the Theory of Reheating After Inflation
- Everything You Always Wanted To Know About The Cosmological Constant Problem (But Were Afraid To Ask)
- Thermodynamical Aspects of Gravity: New insights
- Equilibrium State of a Massless Self-Interacting Scalar Field in the De Sitter Background
- First Law of Thermodynamics and Friedmann Equations of Friedmann-Robertson-Walker Universe
- Gravity and the Thermodynamics of Horizons
- Classical and Quantum Thermodynamics of horizons in spherically symmetric spacetimes
- Quantum effects can render w<-1 on cosmological scales
- Super-Acceleration from Massless, Minimally Coupled
- On the Back Reaction Problem for Gravitational Perturbations
- The Energy-Momentum Tensor for Cosmological Perturbations
- De Sitter Space and Eternity
- The Quantum Gravitational Back-Reaction On Inflation
- Quantum Gravity Slows Inflation
- Inflation and de Sitter Thermodynamics
- Decay of Vacuum Energy
- Back Reaction And Local Cosmological Expansion Rate
- Schwinger mechanism revisited
- Initial Conditions for Inflation
- Energy-Momentum Tensor of Particles Created in an Expanding Universe
- A Simple Method for One-Loop Renormalization in Curved Space-Time
- Attractor states and infrared scaling in de Sitter space
- De Sitter space and perpetuum mobile
- Thermal Interpretation of Infrared Dynamics in de Sitter
- On the initial condition of inflationary fluctuations
Cited by in corpus (20)
- Gravitational Production of Superheavy Dark Matter and Associated Cosmological Signatures
- Cosmological Signatures of Superheavy Dark Matter
- Effect of a magnetic field on Schwinger mechanism in de Sitter spacetime
- De Sitter Stability and Coarse Graining
- Stochastic dark energy from inflationary quantum fluctuations
- Primordial Black Holes from Thermal Inflation
- Renormalization of the inflationary perturbations revisited
- Cosmological Constant Problem and Renormalized Vacuum Energy Density in Curved Background
- Adiabatic regularization with a Yukawa interaction
- Instability of De Sitter Spacetime induced by Quantum Conformal Anomaly
- Eternal inflation and the quantum birth of cosmic structure
- Light scalars on cosmological backgrounds
- Decoherence Can Relax Cosmic Acceleration: an Example
- Multiple spectator condensates from inflation
- Some measures for fermionic entanglement in the cosmological de Sitter spacetime
- Tracking Pre-inflation Era from density perturbation spectra
- Induced energy-momentum tensor of Dirac field in 2D de Sitter QED
- Energy-momentum tensor and effective Lagrangian of scalar QED with a nonminimal coupling in 2D de Sitter spacetime
- Induced energy-momentum tensor in de Sitter scalar QED and its implication for induced current
- De Sitter scattering amplitudes in the Born approximation