Journal
THEORETICAL AND MATHEMATICAL PHYSICS
Volume 190, Issue 1, Pages 91-97Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S004057791701007X
Keywords
NJL model; meson condensation; diquark condensation
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Funding
- University Grants Commission, Government of India
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Using a three- and four-dimensional Pauli-Villars regularization scheme, we investigate quark-antiquark and diquark condensation in the framework of the Nambu-Jona-Lasinio model. Using the particle Fermi momentum as a cutoff parameter, we study the energy gap width and coherence length for the meson condensate < q (q) over bar >. We also study the energy gap width and critical coherence length (the distance over which there would be no diquark condensation) for the diquark < qq > and the dependence on the Fermi momentum. We obtain an estimate of the Fermi momentum value for meson and diquark condensates with an energy gap width of the order of 100 MeV.
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