Physics – Nuclear Physics
Scientific paper
Oct 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aps..haw.eg012k&link_type=abstract
American Physical Society, 3rd Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan, October 1
Physics
Nuclear Physics
Scientific paper
Toward a new equation of state (EOS) for supernova (SN) simulations based on the realistic nuclear forces, the EOS for non-uniform nuclear matter is constructed in the Thomas-Fermi (TF) approximation. The energy of uniform nuclear matter used in the TF calculation is obtained by a simplified variational method with the AV18 and UIX potentials. The parameters associated with the nuclear three-body force are fixed so that the TF calculation for atomic nuclei reproduces the gross behavior of their experimental masses and radii. With use of this TF method, the EOS of non-uniform nuclear matter, which is assumed to be composed of a Coulomb lattice of single species of nucleus immersed in a uniform electron gas (with neutrons dripped out of the nuclei), are calculated for various baryon densities and proton fractions at zero temperature. The obtained thermodynamic quantities of non-uniform matter are compared with those of Shen-EOS.
Kanzawa Hiroaki
Oyamatsu Kazuhiro
Sumiyoshi Kohsuke
Takano Masatoshi
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