The Plasmon Damping Rate for T -> T_C

Abstract

The plasmon damping rate in scalar field theory is computed close to the critical temperature. It is shown that the divergent result obtained in perturbation theory is a consequence of neglecting the thermal renormalization of the coupling. Taking this effect into account, a vanishing damping rate is obtained, leading to the critical slowing down of the equilibration process.

4 pages, 3 figures. Minor modifications. Two references changed. Version to appear on Phys. Rev. Lett

References in corpus (2)

• Classical approximation for time dependent quantum field theory: diagrammatic analysis for hot scalar fields
• Classical Statistical Mechanics and Landau Damping

Cited by in corpus (11)

• Stochastic treatment of Disoriented Chiral Condensates within a Langevin description
• Relaxing Near the Critical Point
• Fluctuations of Particle Yield Ratios in Heavy-Ion Collisions
• Dynamics near the critical point: the hot renormalization group in quantum field theory
• Ising-like dynamical signatures and the end-point of the QCD transition line
• Thermal Renormalization Group-Equations and the Phase-Transition of Scalar O(N)-Theories
• The Thermal Renormalization Group for Fermions, Universality, and the Chiral Phase-Transition
• Stable high-temperature paramagnons in a three-dimensional antiferromagnet near quantum criticality: Application to TlCuCl${}_3$
• Critical Behavior of Damping Rate for Plasmon with Finite Momentum in ϕ^4 Theory
• A consistent nonperturbative approach to thermal damping-rates
• Quantum critical dynamics for a prototype class of insulating antiferromagnets