Density matrix expansion for the isospin- and momentum-dependent MDI interaction
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Date
2010
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
By assuming that the isospin- and momentum-dependent MDI interaction has a form similar to the Gogny-like effective two-body interaction with a Yukawa finite-range term and the momentum dependence originates only from the finite-range exchange interaction, we determine its parameters by comparing the predicted potential energy density functional in uniform nuclear matter with what has been usually given and used extensively in transport models for studying isospin effects in intermediate-energy heavy-ion collisions as well as in investigating the properties of hot asymmetric nuclear matter and neutron star matter. We then use the density matrix expansion to derive from the resulting finite-range exchange interaction an effective Skyrme-like zero-range interaction with density-dependent parameters. As an application, we study the transition density and pressure at the inner edge of neutron star crusts using the stability conditions derived from the linearized Vlasov equation for the neutron star matter.
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/
Keywords
SPHERICAL NUCLEI, MATTER, RADII, Physics
Citation
Jun Xu and Che Ming Ko. Phys.Rev.C 82 044311 2010. "Copyright (2010) by the American Physical Society."