Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-02-08
JHEP 1102:066,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 6 figures
Scientific paper
10.1007/JHEP02(2011)066
In this paper we calculate the quark number susceptibility (QNS) of QCD at finite temperature under the rainbow-ladder and Ball-Chiu type truncation schemes of the Dyson-Schwinger approach. It is found that the difference between the result of the rainbow-ladder truncation and that of Ball-Chiu type truncation is small, which shows that the dressing effect of the quark-gluon vertex on the QNS at finite temperature is small. It is also found that at low temperature the quark number susceptibility is nearly zero and it increases sharply when the temperature approaches the chiral phase transition point. A comparison between the result in the present paper with those in the literature is made.
Jiang Yu
Luo Liu-Jun
Zong Hong-Shi
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