Roberge-Weiss phase transition and its endpoint

Details Roberge-Weiss phase transition and its endpoint Roberge-Weiss phase transition and its endpoint

2009-04-06

arxiv.org/abs/0904.0925v2

J.Phys.G36:115010,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 19 figures. Journal version. Some sentences have been revised and added. Fig. 9 has been revised. (New panels have b

Scientific paper

10.1088/0954-3899/36/11/115010

The Roberge-Weiss (RW) phase transition in the imaginary chemical potential region is analyzed by the Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model. In the RW phase transition, the charge-conjugation symmetry is spontaneously broken, while the extended Z3 symmetry (the RW periodicity) is preserved. The RW transition is of second order at the endpoint. At the zero chemical potential, a crossover deconfinement transition appears as a remnant of the second-order RW phase transition at the endpoint, while the charge-conjugation symmetry is always preserved.

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