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Titolo:
The chiral phase transition at high baryon density from nonperturbative flow equations
Autore:
Berges, J; Jungnickel, DU; Wetterich, C;
Indirizzi:
MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA MIT Cambridge MA USA 02139MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA Univ Heidelberg, Inst Theoret Phys, D-69120 Heidelberg, Germany Univ Heidelberg Heidelberg Germany D-69120 , D-69120 Heidelberg, Germany
Titolo Testata:
EUROPEAN PHYSICAL JOURNAL C
fascicolo: 2, volume: 13, anno: 2000,
pagine: 323 - 329
SICI:
1434-6044(200003)13:2<323:TCPTAH>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
QCD; QUARK; MODEL; SUPERCONDUCTIVITY; STATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Berges, J MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA MIT Cambridge MAUSA 02139 heoret Phys, Cambridge, MA 02139 USA
Citazione:
J. Berges et al., "The chiral phase transition at high baryon density from nonperturbative flow equations", EUR PHY J C, 13(2), 2000, pp. 323-329

Abstract

We investigate the chiral phase transition at high baryon number density within the linear quark meson model for two flavors. The method we employ isbased on an exact renormalization group equation for the free energy. Truncated nonperturbative flow equations are derived at nonzero chemical potential and temperature. Whereas the renormalization group flow leads to spontaneous chiral symmetry breaking in vacuum. we find a chiral symmetry restoring first order transition at high density. Combined with previous investigations at nonzero temperature, the result implies the presence of a tricritical point with long-range correlations in the phase diagram.

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Documento generato il 14/07/20 alle ore 19:39:36