Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-09-21
Physical Review D 54 (1996) 1848-1851
Physics
Nuclear Physics
Nuclear Theory
Revtex, 5 pages, 4 figures included as uuencoded ps
Scientific paper
10.1103/PhysRevD.54.1848
In this work we study properties of neutron star crusts, where matter is expected to consist of nuclei surrounded by superfluid neutrons and a homogeneous background of relativistic electrons. The nuclei are disposed in a Coulomb lattice, and it is believed that the structure of the lattice influences considerably the specific heat of the neutronic matter inside the crust of a neutron star. Using a modern meson--exchange potential in the framework of a local--density approximation we calculate the neutronic specific heat accounting for various shapes of the Coulomb lattice, from spherical to non--spherical nuclear shapes. We find that a realistic nucleon--nucleon potential leads to a significant increase in the neutronic specific heat with respect to that obtained assuming a uniform neutron distribution. The increase is largest for the non--spherical phase of the crust. These results may have consequences for the thermal history of young neutron stars.
de Blasio Fabio Vittorio
Elgaroey Oe.
Engvik L.
Hjorth-Jensen Morten
Lazzari G.
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