Scalar and vector meson propagation in asymmetric nuclear matter

Details Scalar and vector meson propagation in asymmetric nuclear matter Scalar and vector meson propagation in asymmetric nuclear matter

2007-09-14

arxiv.org/abs/0709.2197v1

Phys.Lett.B659:565-570,2008

Physics

Nuclear Physics

Nuclear Theory

10 pages, 2 figures. Fig.2 is given separately. High resolution images are available on request

Scientific paper

10.1016/j.physletb.2007.11.027

The propagation of the scalar (\sigma and \delta) and vector (\omega and \rho) mesons in an iso-asymmetric nuclear matter is studied in detail, using the Walecka model. We calculate the invariant masses and spectral functions of the mesons, including the effect of meson mixing. At finite density, the mixing effect is quite important in the propagation of the scalar and (longitudinal) vector mesons. In the \sigma channel, we find a three-peak structure in the spectral function, caused by the mixing effect.

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