Neutron Star Crust Microphysics

          @misc{ pirsa_PIRSA:11060030,
            doi = {10.48660/11060030},
            url = {https://pirsa.org/11060030},
            author = {Horowitz, Charles},
            keywords = {Particle Physics},
            language = {en},
            title = {Neutron Star Crust Microphysics},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {jun},
            note = {PIRSA:11060030 see, \url{https://pirsa.org}}
          }
          

Abstract

New equations of state (EOSs) from extensive virial and relativistic mean field calculations will be presented. We construct thermodynamically consistent EOSs from slightly noisy free energy calculations, which satisfy the first law, and conserves entropy during adiabatic compression. However this requires a very careful procedure of numerically smoothing the entropy and then integrating the entropy to generate consistent free energies. We discuss various features of the EOS in different density, temperature, and proton fraction regimes. We compare the adiabatic index for our EOSs with those of the Lattimer Swesty and H. Shen et al. EOSs. We do not find a first order liquid vapor phase transition for the astrophysical EOS. Finally, we discuss neutrino interactions that are consistent with our EOSs. At low density, we present model independent neutrino responses that are based on the viral expansion .