Topological feature and phase structure of QCD at complex chemical potential
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The pseudo-critical temperature of the confinement-deconfinement transition and the phase transition surface are investigated by using the complex chemical potential. We can interpret the imaginary chemical potential as the Aharonov-Bohm phase, then the analogy of the topological order suggests that the Roberge-Weiss endpoint would define the pseudo-critical temperature. The behavior of the Roberge-Weiss endpoint at small real quark chemical potential is investigated with the perturbative expansion. The expected QCD phase diagram at complex chemical potential is presented.
- Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics (750), 282-286, 2015-11-12