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Abstract
摘要 |
The equation of state (EOS) for dense nuclear matter is essential in the studies of neutron stars and core-collapse supernovae (SNe). However, the number of nuclear EOSs available for SN simulations (SN-EOS) is limited, because a SN-EOS is required to provide thermodynamic quantities in an extremely wide range of densities, proton fractions and temperatures. Furthermore, those SN-EOSs are based on phenomenological models for uniform nuclear matter. Therefore, it is desirable that the SN-EOSs calculated with the microscopic many-body theories are applied to SN simulations. Under these circumstances, we construct a new type of SN-EOS based on the realistic nuclear Hamiltonian composed of the Argonne v18 two-body potential and Urbana IX three-body potential using the variational many-body theory. In this talk, we will discuss the properties of our SN-EOS and its application to numerical simulations of core-collapse SNe. Furthermore, we will report on an extension of our variational approach so as to treat hyperon mixing. |
