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论文类型：期刊论文

发表时间：2019-07-01

发表刊物：CHINESE PHYSICS C

收录刊物：SCIE

卷号：43

期号：7

ISSN号：1674-1137

关键字：chiral symmetries; renormalization group methods; quark-gluon plasma; color confinement

摘要：The chiral order-parameter sigma field and its higher-order cumulants of fluctuations are calculated within the functional renormalization group approach by adopting the local potential approximation in this study. The influence of glue dynamics on fluctuations of the sigma field is investigated, and we find that they are weakly affected. This is in sharp contrast to the baryon number fluctuations, which are sensitive to the glue dynamics and involve information on the color confinement. The implications of our calculated results are discussed from the viewpoint of the theoretical and experimental efforts in the search for the QCD critical end point.