Parametrization of a nonlocal chiral quark model in the instantaneous three-flavor case. Basic formulas and tables |
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Authors: | H Grigorian |
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Institution: | 1. Institüt für Physik, Universit?t Rostock, Rostock, Germany
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Abstract: | We describe the basic formulation of the parametrization scheme for the instantaneous nonlocal chiral quark model in the three-flavor
case. We choose to discuss the Gaussian, Lorentzian-type, Woods-Saxon, and sharp cutoff (NJL) functional forms of the momentum
dependence for the form factor of the separable interaction. The four parameters, light and strange quark masses and coupling
strength (G
S) and range of the interaction (Λ), have been fixed by the same phenomenological inputs: pion and kaon masses and the pion
decay constant and light quark mass in vacuum. The Woods-Saxon and Lorentzian-type form factors are suitable for an interpolation
between sharp cutoff and soft momentum dependence. Results are tabulated for applications in models of hadron structure and
quark matter at finite temperatures and chemical potentials, where separable models have been proven successfully.
The text was submitted by the authors in English. |
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Keywords: | |
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