Topological feature and phase structure of QCD at complex chemical potential

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Abstract

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.

Journal

  • 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

    Elsevier

Codes

  • NII Article ID (NAID)
    120005867113
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    0370-2693
  • Data Source
    IR 
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