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Title: Topological feature and phase structure of QCD at complex chemical potential
Authors: Kashiwa, Kouji
Ohnishi, Akira  kyouindb  KAKEN_id
Author's alias: 柏, 浩司
大西, 明
Keywords: Complex chemical potential
Deconfinement transition
QCD phase diagram
Issue Date: 12-Nov-2015
Publisher: Elsevier
Journal title: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume: 750
Start page: 282
End page: 286
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.
Rights: © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
URI: http://hdl.handle.net/2433/217335
DOI(Published Version): 10.1016/j.physletb.2015.09.036
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