The pion at finite temperature and density

We review the low-temperature variation in the pion mass with temperature. This dependence follows from explicit chiral symmetry breaking and can be calculated in terms of pionic interactions. We then show that the standard calculation of the density dependence of the pion mass gives only a small in... Ausführliche Beschreibung

1. Person: Brown, G.E.
Weitere Personen: Koch, V.; Rho, M.
Quelle: in Nuclear Physics, Section A Vol. 535, No. 3-4 (1991), p. 701-714
Weitere Artikel
Format: Online-Artikel
Sprache: English
Veröffentlicht: 1991
Beschreibung: Online-Ressource
Online Zugang: Online
Volltext
Tags: Hinzufügen
Keine Tags. Fügen Sie den ersten Tag hinzu!
Anmerkung: Copyright: Copyright (c) 2002 Elsevier Science B.V.
LEADER 02330nma a2200337 c 4500
001 NLEJ181361477
003 DE-601
005 20151015002525.0
007 cr uuu---uuuuu
008 070505s1991 000 0 eng d
016 7 |a 1466542-6  |2 DE-600 
024 8 |a 0375-9474(91)90483-M 
035 |a (DE-599)GBVNLZ181361477 
040 |b ger  |c GBVCP 
041 0 |a eng 
084 |a sdj  |2 natliz 
245 0 4 |a The pion at finite temperature and density  |h Elektronische Ressource 
300 |a Online-Ressource 
500 |a Copyright: Copyright (c) 2002 Elsevier Science B.V. 
520 |a We review the low-temperature variation in the pion mass with temperature. This dependence follows from explicit chiral symmetry breaking and can be calculated in terms of pionic interactions. We then show that the standard calculation of the density dependence of the pion mass gives only a small increase in this mass with increasing density. Explicit chiral symmetry breaking, which produces the bare quark masses, arises at a much higher mass scale than that of QCD. The bare quark masses are then magnified by the quark condensate to produce the much larger pion mass. This magnification disappears as the quark condensate ''melts'', bringing the pion mass essentially to zero at a density =<2"0, where "0 is the nuclear matter density. In the region of nuclear matter density "0, m"π^*/m"π may even be somewhat smaller than m"N^*/m"N. Arguments are given that the nucleon mass, and masses of mesons made up out of up-and-down quarks should change much more rapidly with density than with temperature, at least for moderate changes in each. We suggest that the decreasing pion mass, while not effective in pion-nuclear processes at zero temperature, should play an important role in heavy-ion collisions. 
533 |a Online edition  |f Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 ; 041023-8 
700 1 |a Brown, G.E. 
700 1 |a Koch, V. 
700 1 |a Rho, M. 
773 0 8 |i in  |t Nuclear Physics, Section A  |d Amsterdam : Elsevier  |g Vol. 535, No. 3-4 (1991), p. 701-714  |q 535:3-4<701-714  |w (DE-601)NLEJ177217928  |x 0375-9474 
856 4 0 |u http://linkinghub.elsevier.com/retrieve/pii/0375-9474(91)90483-M 
901 |a OLC 
912 |a ZDB-1-SDJ 
912 |a GBV_NL_ARTICLE 
951 |a AR 
952 |d 535  |j 1991  |e 3-4  |h 701-714 

Ähnliche Einträge

Keine ähnlichen Titel gefunden

Privacy Notice Ask a Librarian New Acquisitions