Anomaly-Induced Inhomogeneous Phase in Quark Matter without the Sign Problem
arXiv:1902.07522 · doi:10.1103/PhysRevLett.123.012001
Abstract
We demonstrate the existence of an anomaly-induced inhomogeneous phase in a class of vector-like gauge theories without sign problem, thus disproving the long-standing conjecture that the absence of sign problem precludes spontaneous breaking of translational invariance. The presence of the phase in the two-color modification of quantum chromodynamics can be tested by an independent nonperturbative evaluation of the neutral pion decay constant as a function of external magnetic field. Our results provide a benchmark for future lattice studies of inhomogeneous phases in dense quark matter.
5 pages, 2 figures; v2: matches text to appear in Phys. Rev. Lett
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- Dense QCD(-like) Matter in Strong Magnetic Fields