Kaon condensation in neutron stars and high density behaviour of nuclear symmetry energy

Details Kaon condensation in neutron stars and high density behaviour of nuclear symmetry energy Kaon condensation in neutron stars and high density behaviour of nuclear symmetry energy

1999-07-24

arxiv.org/abs/astro-ph/9907339v1

Acta Phys.Polon. B30 (1999) 2747-2758

Astronomy and Astrophysics

Astrophysics

12 pages, 7 figures, Acta Phys. Pol. B in press

Scientific paper

We study the influence of a high density behaviour of the nuclear symmetry energy on a kaon condensation in neutron stars. We find that the symmetry energy typical for several realistic nuclear potentials, which decreases at high densities, inhibits kaon condensation for weaker kaon-nucleon couplings. There exists a threshold coupling above which the kaon condensate forms at densities exceeding some critical value. This is in contrast to the case of rising symmetry energy, as e.g. for relativistic mean field models, when the kaon condensate can form for any coupling at a sufficiently high density. Properties of the condensate are also different in both cases.

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