Neutron stars in a Skyrme model with hyperons

Details Neutron stars in a Skyrme model with hyperons Neutron stars in a Skyrme model with hyperons

2004-07-23

arxiv.org/abs/nucl-th/0407083v1

Eur.Phys.J. A24 (2005) 293-312

Physics

Nuclear Physics

Nuclear Theory

27 pages, 9 figures

Scientific paper

10.1140/epja/i2004-10142-5

Available Skyrme parametrizations with hyperons are examined from the point of view of their suitability for applications to neutron stars. It is shown that the hyperons can attenuate or even remove the problem of ferromagnetic instability common to (nearly) all Skyrme parametrizations of the nucleon-nucleon interaction. At high density the results are very sensitive to the choice of the Lambda-Lambda interaction. The selected parameter sets are then used to obtain the resulting properties of both cold neutron stars and hot protoneutron stars. The general features known from other models are recovered.

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