How reliable is the mean-field Nuclear Matter description for supporting Chiral Effective Lagrangians?

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The link between non-linear chiral effective Lagrangians and the Walecka model description of bulk nuclear matter [1] is questioned. This fact is by itself due to the Mean Field Approximation (MFA) which in nuclear mater makes the picture of a nucleon-nucleon interaction based on scalar(vector) meson exchange, equivalent to the description of a nuclear matter based on attractive and repulsive contact interactions. We present a linear chiral model where this link between the Walecka model and an underlying to chiral symmetry realization still holds, due to MFA.
5 pages latex file after being uncompressed. Submitted to Phys. Letts. B

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Nuclear Theory, High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/82632

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/nucl-th/9602036
 http://arxiv.org/abs/nucl-th/9602036
 Braz.J.Phys. 31 (2001) 518

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arXiv