Anomaly matching for the phase diagram of massless ZN-QCD

被引:72
|
作者
Tanizaki, Yuya [1 ]
Kikuchi, Yuta [2 ,3 ]
Misumi, Tatsuhiro [4 ,5 ,6 ]
Sakai, Norisuke [5 ,6 ]
机构
[1] Brookhaven Natl Lab, BNL Res Ctr, RIKEN, Upton, NY 11973 USA
[2] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
[3] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[4] Akita Univ, Dept Math Sci, Akita 0108502, Japan
[5] Keio Univ, Res & Educ Ctr Nat Sci, Kanagawa 2238521, Japan
[6] RIKEN, ITHEMS, Wako, Saitama 3510198, Japan
基金
日本学术振兴会; 美国国家科学基金会;
关键词
FINITE-DENSITY; GAUGE-THEORIES; LATTICE QCD;
D O I
10.1103/PhysRevD.97.054012
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We elucidate that the phase diagram of massless N-flavor QCD under a Z(N) flavor-twisted boundary condition (massless Z(N)-QCD) is constrained by a 't Hooft anomaly involving two-form gauge fields. As a consequence, massless Z(N)-QCD turns out to realize persistent order at any temperature and quark chemical potential; namely, the symmetric and gapped phase is strictly forbidden. This is the first result on the finite-(T, mu) phase diagram in QCD-type theories based on anomaly matching related to center and discrete axial symmetries.
引用
收藏
页数:7
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