Medium polarization and pairing in asymmetric nuclear matter

Dong, J.M.; Lombardo, U.; Zhang, H.F.; Zuo, W.

doi:10.1134/S1063778817010069

Medium polarization and pairing in asymmetric nuclear matter

Apr 20, 2017

9 pages

Published in:

Phys.Atom.Nucl. 80 (2017) 1, 77-85

Published: Apr 20, 2017

DOI:

10.1134/S1063778817010069

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Abstract: (Springer)

The many-body theory of asymmetric nuclear matter is developed beyond the Brueckner–Hartree–Fock approximation to incorporate the medium polarization effects. The extension is performed within the Babu–Brown induced interaction theory. After deriving the particle–hole interaction in the form of Landau–Migdal parameters, the effects of the induced component on the symmetry energy are investigated along with the screening of

^{1}

S

_{0}

proton–proton and

^{3}

PF

_{2}

neutron–neutron pairing, which are relevant for the neutron-star cooling. The crossover from repulsive (screening) to attractive (anti-screening) interaction going from pure neutron matter to symmetric nuclear matter is discussed.

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