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arXiv · 0904.0925

Roberge-Weiss phase transition and its endpoint

Hiroaki Kouno·Yuji Sakai·Kouji Kashiwa·Masanobu Yahiro
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Abstract

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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Hiroaki Kouno, Yuji Sakai, Kouji Kashiwa, Masanobu Yahiro. 2010-07-14. Roberge-Weiss phase transition and its endpoint. https://doi.org/10.1088/0954-3899%2F36%2F11%2F115010

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