Physics – Nuclear Physics
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phrvc..55.2092c&link_type=abstract
Physical Review C (Nuclear Physics), Volume 55, Issue 4, April 1997, pp.2092-2100
Physics
Nuclear Physics
23
Nuclear Matter, Charge Distribution, Nuclear Matter Aspects Of Neutron Stars, Neutron Stars
Scientific paper
We study the properties of nuclei in the inner crusts of neutron stars based on the Boguta-Bodmer nonlinear model in the relativistic mean-field theory. We carefully determine the surface diffuseness of the nuclei as the density of matter increases. The imaginary time step method is used to solve the Euler-Lagrange equation derived from the variational principle applied to the semiclassical energy density. It is shown that with increasing density, the spherical nuclei become more neutron rich and eventually merge to form a uniform liquid of neutrons, protons, and electrons. We find that the smaller the value of the incompressibility K, the lower the density at which the phase transition to uniform matter occurs. The relativistic extended Thomas-Fermi method is generalized to investigate nonspherical nuclei. Our results show that the spherical nucleus phase is the only equilibrium state in the inner crusts of neutron stars.
Cheng Kwong Sang
Dai Gao Z.
Yao Chih-Chia
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