Dissipation of oscillating scalar backgrounds in an FLRW universe
arXiv:2202.08218 · doi:10.1007/JHEP11(2022)075
Abstract
We study the dissipation of oscillating scalar backgrounds in a spatially flat Friedmann-Lemaître-Robertson-Walker universe using non-equilibrium quantum field theory. To be concrete, a -symmetric two-scalar model with quartic interactions is used. For quasi-harmonic oscillations, we adopt the multi-scale analysis to obtain analytical approximate expressions for the evolution of the scalar background in terms of the retarded self-energy and retarded proper four-vertex function. Different from the case in flat spacetime, we find that in an expanding universe the condensate decay in this model can be complete only if the imaginary part of the retarded self-energy is not negligibly small. The microphysical interpretation of the imaginary parts of the retarded self-energy and retarded proper four-vertex function in terms of particle production is also discussed.
arXiv comment32 pages + appendix, 18 figures; v2: minor typos corrected; v3: clarifying comments added; v4: time-dependence of the microscopic quantities discussed, refs updated, to appear in JHEP; v5: matches the published version
References in corpus (62)
- Towards the Theory of Reheating After Inflation
- Reheating after Inflation
- Ultralight scalars as cosmological dark matter
- Encyclopaedia Inflationaris
- Gauge Singlet Scalars as Cold Dark Matter
- Universe Reheating after Inflation
- Largest temperature of the radiation era and its cosmological implications
- Dynamics of Symmetry Breaking and Tachyonic Preheating
- Introduction to Nonequilibrium Quantum Field Theory
- Production of massive particles during reheating
- Resummation in a Hot Scalar Field Theory
- Dissipation via Particle Production in Scalar Field Theories
- The Strong CP Problem and Axions
- Tachyonic Instability and Dynamics of Spontaneous Symmetry Breaking
- Analytic and Numerical Study of Preheating Dynamics
- Microphysical Approach to Nonequilibrium Dynamics of Quantum Fields
- Primordial Curvature Fluctuation and Its Non-Gaussianity in Models with Modulated Reheating
- Reheating and Post-inflationary Production of Dark Matter
- Quantum Leptogenesis I
- Inflaton Oscillations and Post-Inflationary Reheating
- Transport equations for chiral fermions to order \hbar and electroweak baryogenesis: Part I
- Transport equations for chiral fermions to order \hbar and electroweak baryogenesis: Part II
- Classical Fields Near Thermal Equilibrium
- Gravitational Production of Dark Matter during Reheating
- Flavoured Leptogenesis in the CTP Formalism
- Quantum mechanics of baryogenesis
- Finite Number Density Corrections to Leptogenesis
- Quantum Boltzmann Equations and Leptogenesis
- Dynamics of oscillating scalar field in thermal environment
- Systematic approach to leptogenesis in nonequilibrium QFT: vertex contribution to the CP-violating parameter
- Leptogenesis from Quantum Interference in a Thermal Bath
- Systematic approach to leptogenesis in nonequilibrium QFT: self-energy contribution to the CP-violating parameter
- Hidden Inflaton Dark Matter
- The Higgs Portal to Cosmology
- Fate of oscillating scalar fields in the thermal bath and their cosmological implications
- Light Dark Matter from Inflaton Decay
- Ultraviolet Freeze-in with a Time-dependent Inflaton Decay
- Self-consistent solitons for vacuum decay in radiatively generated potentials
- Green's function method for handling radiative effects on false vacuum decay
- Particle abundance in a thermal plasma: quantum kinetics vs. Boltzmann equation
- Increasing Temperature toward the Completion of Reheating
- Cutting rules at finite temperature
- Implications of time-dependent inflaton decay on reheating and dark matter production
- Local Approximations for Effective Scalar Field Equations of Motion
- Constraining the effective action by a method of external sources
- Reheating and Dark Matter Freeze-in in the Higgs- Inflation Model
- On finite density effects on cosmic reheating and moduli decay and implications for Dark Matter production
- Simple Physical Approach to Thermal Cutting Rules
- Tachyonic Preheating in Plateau Inflation
- Radiative effects on false vacuum decay in Higgs-Yukawa theory
- Oscillating scalar dissipating in a medium
- Gradient effects on false vacuum decay in gauge theory
- Non-equilibrium dynamics of a scalar field with quantum backreaction
- Challenges for Inflaton Dark Matter
- Visualising quantum effective action calculations in zero dimensions
- Dark matter production and reheating via direct inflaton couplings: collective effects
- The Linear Regime of Tachyonic Preheating
- Novel collective excitations in a hot scalar field theory
- General Markovian Equation for Scalar Fields in a Slowly Evolving Background
- Boltzmann equations for preheating
- Quantum and Gradient Corrections to False Vacuum Decay on a de Sitter Background
- The Thermal Feedback Effects on the Temperature Evolution during Reheating
Cited by in corpus (7)
- Logarithmically divergent friction on ultrarelativistic bubble walls
- From QFT to Boltzmann: Freeze-in in the presence of oscillating condensates
- Bubble wall dynamics from nonequilibrium quantum field theory
- Non-thermal production of heavy vector dark matter from relativistic bubble walls
- Casimir effect, loop corrections and topological mass generation for interacting real and complex scalar fields in Minkowski spacetime with different conditions
- Fate of homogeneous -symmetric scalar condensates
- Decay of a scalar condensate in two different approaches