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Stressed Cooper pairing in QCD at high isospin density: effective Lagrangian and random matrix theory

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Kanazawa, Takuya ; Wettig, Tilo

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Date of publication of this fulltext: 11 Aug 2015 07:53


We generalize QCD at asymptotically large isospin chemical potential to an arbitrary even number of flavors. We also allow for small quark chemical potentials, which stress the coincident Fermi surfaces of the paired quarks and lead to a sign problem in Monte Carlo simulations. We derive the corresponding low-energy effective theory in both p- and ϵ-expansion and quantify the severity of the sign ...


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