6533b821fe1ef96bd127c4ab

RESEARCH PRODUCT

Linear response of homogeneous nuclear matter with energy density functionals

Dany DavesneJesús NavarroAlessandro Pastore

subject

Physics[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Nuclear Theory010308 nuclear & particles physicsmedia_common.quotation_subjectNuclear TheoryMomentum transferFOS: Physical sciencesFísicaGeneral Physics and AstronomyPropagatorNuclear matter01 natural sciencesAsymmetryNuclear Theory (nucl-th)Isospin0103 physical sciencesNeutronTensorNuclear Experiment010306 general physicsRandom phase approximationmedia_commonMathematical physics

description

Response functions of infinite nuclear matter with arbitrary isospin asymmetry are studied in the framework of the random phase approximation. The residual interaction is derived from a general nuclear Skyrme energy density functional. Besides the usual central, spin-orbit and tensor terms it could also include other components as new density-dependent terms or three-body terms. Algebraic expressions for the response functions are obtained from the Bethe-Salpeter equation for the particle-hole propagator. Applications to symmetric nuclear matter, pure neutron matter and asymmetric nuclear matter are presented and discussed. Spin-isospin strength functions are analyzed for varying conditions of density, momentum transfer, isospin asymmetry, and temperature for some representative Skyrme functionals. Particular attention is paid to the discussion of instabilities, either real or unphysical, which could manifest in finite nuclei.

yearjournalcountryeditionlanguage
2014-12-07Physics Reports
https://doi.org/10.1016/j.physrep.2014.11.002