Real-time pion propagation in finite-temperature QCD
| Autor: | M. A. Stephanov, D. T. Son |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Chiral anomaly
Quantum chromodynamics Physics Nuclear and High Energy Physics Particle physics Chiral perturbation theory Thermal quantum field theory High Energy Physics::Lattice Nuclear Theory FOS: Physical sciences High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Pion Quantum electrodynamics Isospin Dispersion relation High Energy Physics::Experiment Pion decay constant |
| Zdroj: | Physical Review D. 66 |
| ISSN: | 1089-4918 0556-2821 |
| DOI: | 10.1103/physrevd.66.076011 |
| Popis: | We argue that in QCD near the chiral limit, at all temperatures below the chiral phase transition, the dispersion relation of soft pions can be expressed entirely in terms of three temperature-dependent quantities: the pion screening mass, a pion decay constant, and the axial isospin susceptibility. The definitions of these quantities are given in terms of equal-time (static) correlation functions. Thus, all three quantities can be determined directly by lattice methods. The precise meaning of the Gell-Mann--Oakes--Renner relation at finite temperature is given. Comment: 25 pages, 2 figures; v2: discussion on the region of applicability expanded, to be published in PRD |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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