Effects of Delta Degrees of Freedom on Quark Condensate in Hot and Dense Matter

Chin. Phys. Lett.

1996, Vol. 13

Issue (11): 813-816 DOI:

Original Articles

Effects of Delta Degrees of Freedom on Quark Condensate in Hot and Dense Matter

LI Lei;NING Ping-zhi;LI Wen-qing¹

Department of Physics, Nankai University, Tianjin 300071 ¹Normal School of Hengshui City, Hengshui, Hebei 053000

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LI Lei, NING Ping-zhi, LI Wen-qing 1996 Chin. Phys. Lett. 13 813-816

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Abstract The relativistic mean-field theory is applied to study the quark condensate systematically in nuclear matter at zero and finite temperature in terms of the relative importance of delta degrees of freedom. Calculations have included the high-order contributions to quark condensate in nuclear medium due to the baryon-baryon interactions. Numerical results are presented for the nuclear density up to five times larger than the normal density and temperature up to 120 MeV. It is found that the delta resonance in nuclear matter can cause substantial decreases to in-medium quark condensate.

Keywords: 21.65.+f 24.85.+p

Published: 01 November 1996

PACS:	21.65.+f
	24.85.+p	(Quarks, gluons, and QCD in nuclear reactions)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1996/V13/I11/0813

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