A massive high density effective theory

Details A massive high density effective theory A massive high density effective theory

2007-06-02

arxiv.org/abs/0706.0277v1

Phys.Rev.D76:125022,2007

Physics

Nuclear Physics

Nuclear Theory

7 pages, 6 figures

Scientific paper

10.1103/PhysRevD.76.125022

We derive an effective theory for dense, cold and massive quark matter. To this end, we employ a general effective action formalism where antiquarks and quarks far from the Fermi surface, as well as hard gluons, are integrated out explicitly. We show that the resulting effective action depends crucially on the projectors used to separate quarks from antiquarks. If one neglects the quark masses in these projectors, the Feynman rules of the effective theory involve quark mass insertions which connect quark with antiquark propagators. Including the quark masses into these projectors, mass insertions do not appear and the Feynman rules are identical to those found in the zero-mass limit.

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