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The Stability of Nuclear Matter in the Nambu-Jona-Lasinio Model

W. Bentz·A. W. Thomas
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Abstract

Using the Nambu-Jona-Lasinio model to describe the nucleon as a quark-diquark state, we discuss the stability of nuclear matter in a hybrid model for the ground state at finite nucleon density. It is shown that a simple extension of the model to simulate the effects of confinement leads to a scalar polarizability of the nucleon. This, in turn, leads to a less attractive effective interaction between the nucleons, helping to achieve saturation of the nuclear matter ground state. It is also pointed out that that the same effect naturally leads to a suppression of ``Z-graph'' contributions with increasing scalar potential.

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W. Bentz, A. W. Thomas. 2001-05-08. The Stability of Nuclear Matter in the Nambu-Jona-Lasinio Model. https://doi.org/10.1016/s0375-9474(01)01119-8

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