EPJ

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EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 7, 305-311
DOI 10.1007/s100529800997

$\sigma$-$\omega$ model and compressible bag model

S. Kagiyama1 - A. Nakamura2 - T. Otofuji3

1 Department of Physics, Faculty of Science, Kagoshima University, Kagoshima 890, Japan (e-mail: kagiyama@sci.kagoshima-u.ac.jp)
2 Department of Physics, Faculty of Science, Kagoshima University, Kagoshima 890, Japan (e-mail: nakamura@sci.kagoshima-u.ac.jp)
3 Department of Physics, College of Education, Akita University, Akita 010, Japan (e-mail: otofuji@phys.akita-u.ac.jp)

Received: 12 May 1998 / Revised version: 9 July 1998 / Published online: 8 September 1998

Abstract
Compressible bag model is formulated on the basis of lagrangian field theory. A specific application is done in conjunction with $\sigma$-$\omega$ model. The results are similar to Chin-Walecka model and almost reproduce our previous results. The effective nucleon mass does not become so small owing to the compressibility, in contrast to Chin-Walecka model.

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