Medium polarization and pairing in asymmetric nuclear matter

Journal Article · Sun Jan 15 00:00:00 EST 2017 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778817010069· OSTI ID:22613999

Dong, J. M. ^[1]; Zhang, H. F. ^[2]; Zuo, W. ^[1]

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1. Chinese Academy of Science, Institute of Modern Physics (China)
2. Lanzhou University, School of Nuclear Science and Technology (China)

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 {sup 1}S{sub 0} proton–proton and {sup 3}PF{sub 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.

• OSTI ID: 22613999
• Journal Information: Physics of Atomic Nuclei, Vol. 80, Issue 1; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASYMMETRY
HARTREE-FOCK METHOD
MANY-BODY PROBLEM
NEUTRON STARS
NEUTRON-NEUTRON INTERACTIONS
NUCLEAR MATTER
PAIRING INTERACTIONS
PARTICLE-HOLE MODEL
POLARIZATION
PROTON-PROTON INTERACTIONS
SYMMETRY