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arXiv · hep-ph/0404290

New phases in CFL quark matter

Andrei Kryjevski·David B. Kaplan·Thomas Schaefer
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Abstract

We consider order $α_s$ corrections to the squared masses of the pseudo-Goldstone excitations about the ground state of dense quark matter. We show that these contributions tend to destabilize the vacuum, leading to a surprisingly complex phase structure for quark matter as a function of quark mass, even for small $α_s$. In particular we find two new phases of CFL quark matter possibly relevant for the real world, for which the QCD angle theta-bar equals pi/2.

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Andrei Kryjevski, David B. Kaplan, Thomas Schaefer. 2004-04-30. New phases in CFL quark matter. https://doi.org/10.1103/physrevd.71.034004

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