Kaon effective mass and energy from a novel chiral SU(3)-symmetric Lagrangian

Details Kaon effective mass and energy from a novel chiral SU(3)-symmetric Lagrangian Kaon effective mass and energy from a novel chiral SU(3)-symmetric Lagrangian

1998-06-23

arxiv.org/abs/nucl-th/9806068v2

Phys.Rev. C59 (1999) 3381-3385

Physics

Nuclear Physics

Nuclear Theory

13 pages, Latex, 3 PostScript figures included; replaced by the revised version, to appear in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.59.3381

A new chiral SU(3) Lagrangian is proposed to describe the properties of kaons and antikaons in the nuclear medium, the ground state of dense matter and the kaon-nuclear interactions consistently. The saturation properties of nuclear matter are reproduced as well as the results of the Dirac-Br\"{u}ckner theory. Our numerical results show that the kaon effective mass might be changed only moderately in the nuclear medium due to the highly non-linear density effects. After taking into account the coupling between the omega meson and the kaon, we obtain similar results for the effective kaon and antikaon energies as calculated in the one-boson-exchange model while in our model the parameters of the kaon-nuclear interactions are constrained by the SU(3) chiral symmetry.

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