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arXiv · 1902.07522

Anomaly-Induced Inhomogeneous Phase in Quark Matter without the Sign Problem

Tomáš Brauner·Georgios Filios·Helena Kolešová
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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.

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Tomáš Brauner, Georgios Filios, Helena Kolešová. 2019-02-20. Anomaly-Induced Inhomogeneous Phase in Quark Matter without the Sign Problem. https://doi.org/10.1103/physrevlett.123.012001

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