Thermal neutron stars including the hyperon-hyperon interactions Original Research Article

At finite temperature systems with the hyperon-hyperon(YY) interactions are investigated within the framework of the RMFT. With the weak YY interaction, the maximum strangeness content for bound strange hadronic matter decreases with the increase of temperature, if the temperature exceeds 21MeV, strange hadronic matter does not have bound state, while with the strong YY interaction the highest temperature is 30MeV. There is a highest temperature limit(40MeV) for stable neutron stars, which is independent on the choose of the YY interactions. The maximum mass with the weak YY interaction (1.75M⊙) is consistent with the mass constraint.