We study two aspects of the color flavor locked phase of QCD in the Nambu-Jona-Lasinio approximation. The first one is the issue of the dependence on mu of the ultraviolet cutoff in the gap equation, which is solved by allowing for a running coupling constant. The second one is the dependence of the gap on the strange quark mass; using high density effective theory we perform an expansion in the parameter (m(s)/mu)(2) after checking that its numerical validity is already very good at first order.

Aspects of the Color Flavor Locking phase of QCD in the Nambu-Jona Lasinio approximation

M. Ruggieri
2003-01-01

Abstract

We study two aspects of the color flavor locked phase of QCD in the Nambu-Jona-Lasinio approximation. The first one is the issue of the dependence on mu of the ultraviolet cutoff in the gap equation, which is solved by allowing for a running coupling constant. The second one is the dependence of the gap on the strange quark mass; using high density effective theory we perform an expansion in the parameter (m(s)/mu)(2) after checking that its numerical validity is already very good at first order.
2003
High Energy Physics - Phenomenology
High Energy Physics - Phenomenology
Nuclear Theory
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/549888
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