The NJL model and strange quark matter

Details The NJL model and strange quark matter The NJL model and strange quark matter

2002-10-22

arxiv.org/abs/hep-ph/0210295v2

Europhys.Lett.61:314-319,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures, reference added, typos corrected, version to appear in Europhys. Lett

Scientific paper

10.1209/epl/i2003-00171-0

The stability of strange quark matter is studied within the Nambu Jona-Lasinio model with three different parameter sets. The model Lagrangian contains 4-fermion (with and without vector interaction) and 6-fermion terms; the minimum energy per baryon number as a function of the strangeness fraction of the system is compared to the masses of hyperons having the same strangeness fraction, and coherently calculated in the same version of the model, and for the same parameter set. The results show that in none of the different parameter sets strangelets are stable, and in some cases a minimum in the energy per baryon does not even exist.

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