Journalartikel
Autorenliste: Greiner, C; Muller, B
Jahr der Veröffentlichung: 1997
Seiten: 1026-1046
Zeitschrift: Physical Review D
Bandnummer: 55
Heftnummer: 2
ISSN: 2470-0010
eISSN: 2470-0029
Open Access Status: Green
DOI Link: https://doi.org/10.1103/PhysRevD.55.1026
Verlag: American Physical Society
Abstract:
We discuss the classical limit for the long-distance (''soft'') modes of a quantum field when the hard modes of the field are in thermal equilibrium. We address the question of the correct semiclassical dynamics when a momentum cutoff \p\less than or equal to k(c) much less than T is introduced. Higher order contributions lead to a stochastic interpretation for the effective action in analogy with quantum Brownian motion, resulting in dissipation and decoherence for the evolution of the soft modes. Particular emphasis is put on the understanding of dissipation. Our discussion focuses mostly on scalar fields, but we make some remarks on the extension to gauge theories.
Zitierstile
Harvard-Zitierstil: Greiner, C. and Muller, B. (1997) Classical fields near thermal equilibrium, Physical Review D, 55(2), pp. 1026-1046. https://doi.org/10.1103/PhysRevD.55.1026
APA-Zitierstil: Greiner, C., & Muller, B. (1997). Classical fields near thermal equilibrium. Physical Review D. 55(2), 1026-1046. https://doi.org/10.1103/PhysRevD.55.1026
Schlagwörter
DAMPING RATE; FINITE-TEMPERATURE; GLOBAL TEXTURE; GLUON TRANSPORT-THEORY; HOT QCD; LANGEVIN EQUATION; LATTICE GAUGE-THEORY; QUANTUM BROWNIAN-MOTION; SPHALERON TRANSITIONS; YANG-MILLS THEORIES
