Year: 1999
Type: article
Abstract: We demonstrate that the restoration of chiral symmetry at finite T in a class of confining Dyson-Schwinger equation (DSE) models of QCD is a mean field transition, and that an accurate determination of the critical exponents using the chiral and thermal susceptibilities requires very small values of the current-quark mass: ${\mathrm{log}}_{10}{(m/m}_{u})\ensuremath{\lesssim}\ensuremath{-}5.$ Other classes of DSE models characterized by qualitatively different interactions also exhibit a mean field transition. Incipient in this observation is the suggestion that mean field exponents are a result of the gap equation's fermion substructure and not of the interaction.
Source: Physical Review C
Authors: A. Höll, P. Maris, C. D. Roberts
Institutions: University of Rostock, Argonne National Laboratory
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2051897764