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arXiv · 0809.2892

Bose-Einstein condensation in dense quark matter

Jens O. Andersen
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Abstract

We consider the problem of Bose condensation of charged pions in QCD at finite isospin chemical potential $μ_I$ using the O(4)-symmetric linear sigma model as an effective field theory for two-flavor QCD. Using the 2PI $1/N$-expansion, we determine the quasiparticle masses as well as the pion and chiral condensates as a function of the temperature and isospin chemical potential in the chiral limit and at the physical point. At T=0, Bose condensation takes place for chemical potentials larger than $m_π$. In the chiral limit, the chiral condensate vanishes for any finite value of $μ_I$.

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Jens O. Andersen. 2008-10-23. Bose-Einstein condensation in dense quark matter. https://doi.org/10.1016/j.nuclphysa.2009.01.042

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