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$θ$-dependence of QCD at Finite Isospin Density

Max A. Metlitski·Ariel R. Zhitnitsky
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Abstract

We probe the $θ$-dependence of QCD at finite isospin chemical potential $μ_I$ using the effective chiral Lagrangian approach. The phase diagram in the $θ$, $μ_I$ plane is constructed and described in detail in terms of chiral and pion condensates. The physics at $θ~ π$ is investigated in both the normal and superfluid phase. Finally, the behaviour of the gluon condensate at finite $μ_I$ is computed.

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Max A. Metlitski, Ariel R. Zhitnitsky. 2005-10-12. $θ$-dependence of QCD at Finite Isospin Density. https://doi.org/10.1016/j.physletb.2006.01.001

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