Anomaly matching for the phase diagram of massless Z_{N}QCD
Abstract
We elucidate that the phase diagram of massless N flavor QCD under a Z_{N} flavortwisted boundary condition (massless Z_{N}QCD) is constrained by a 't Hooft anomaly involving twoform 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 ,μ ) phase diagram in QCDtype theories based on anomaly matching related to center and discrete axial symmetries.
 Publication:

Physical Review D
 Pub Date:
 March 2018
 DOI:
 10.1103/PhysRevD.97.054012
 arXiv:
 arXiv:1711.10487
 Bibcode:
 2018PhRvD..97e4012T
 Keywords:

 High Energy Physics  Theory;
 Condensed Matter  Strongly Correlated Electrons;
 High Energy Physics  Lattice;
 High Energy Physics  Phenomenology;
 Nuclear Theory
 EPrint:
 7 pages, 1 figure