Physics – Nuclear Physics
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980stin...8232228b&link_type=abstract
Unknown
Physics
Nuclear Physics
Equations Of State, Field Theory (Algebra), Gravitational Collapse, Stellar Evolution, Supernovae, Adiabatic Conditions, Hartree Approximation, Nuclei (Nuclear Physics), Nucleon-Nucleon Interactions, Stellar Temperature, Thomas-Fermi Model
Scientific paper
The equation of state for hot dense matter occurring in stellar collapse is calculated using the Hartree-Fock approximation at finite temperature. The effective nucleon-nucleon interaction is a modified Skyrme force which gives a rather good value of the compression modulus in nuclear matter. Results are presented for the adiabat S=1 per baryon, with a fixed value of the electron fraction Ye = 0.25, in the density range rho = 0.02 to 0.07 baryons per fm(3). It is found that nuclei are still present in the medium. As a consequence the adiabatic index is slightly less than 4/3. The presence of a transition, around half nuclear matter density, towards a phase made of bubbles is also discussed.
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