A nonequilibrium renormalization group approach to turbulent reheating

2006/11/30 by Juan Zanella, Esteban Calzetta · 1 citation
Engineering · Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Fluid Dynamics and Turbulent Flows #Gas Dynamics and Kinetic Theory #Mathematical physics #Mechanics #Non-equilibrium thermodynamics #Physics #Renormalization group #Statistical physics #Thermodynamics #Turbulence #hep-ph

paper · pdf · doi:10.1088/1751-8113/40/25/s41

published as J.Phys.A40:6927-6933,2007; J.Phys.A40:6927-6934,2007 · 8 pages, 2 figures; to appear in J. Phys. A; more detailed account of the calculation of the noise and dissipation kernels

arxiv created 2007/02/19 · openalex publication_date 2007/06/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We use nonequilibrium renormalization group (RG) techniques to analyse the thermalization process in quantum field theory, and, by extension, reheating after inflation. Even if at a high scale Λ the theory is described by a non-dissipative λφ 4 theory, and the RG running induces nontrivial noise and dissipation. For long wavelength and slowly varying field configurations, the noise and dissipation are white and ohmic, respectively. The theory will then tend to thermalize to an effective temperature given by the fluctuation-dissipation theorem.

Citations

• Renormalization group study of damping in nonequilibrium field theory
• The renormalization group and the ε expansion
• Inflation dynamics and reheating
• Quantum dynamics and thermalization for out-of-equilibriumφ4theory
• Irreversibility and Generalized Noise
• Inflation and nonequilibrium renormalization group
• Coarse graining and decoherence in quantum field theory

Cited by

• Quantum Brownian Representation for the Quantum Field Modes