Volume 84, Number 3, November 2008
|Number of page(s)||6|
|Published online||17 October 2008|
Isospin dependence of nucleon 3PF2 superfluidity in asymmetric nuclear matter
Institute of Modern Physics, Chinese Academy of Sciences - 730000 Lanzhou, China
2 School of Nuclear Science and Technology, Lanzhou University - 730000 Lanzhou, China
3 Università di Catania - Catania I-95123, Italy, EU
Corresponding author: email@example.com
Accepted: 19 September 2008
We have investigated the isospin dependence of the neutron and proton 3PF2 superfluidity in isospin-asymmetric nuclear matter within the framework of the Brueckner-Hartree-Fock approach and the BCS theory. We show that the 3PF2 neutron and proton pairing gaps depend sensitively on isospin asymmetry of asymmetric nuclear matter. As the isospin asymmetry increases, the neutron 3PF2 superfluidity becomes stronger and the peak value of the neutron 3PF2 pairing gap increases rapidly. The isospin dependence of the proton 3PF2 superfluidity is shown to be opposite to the neutron one. The proton 3PF2 superfluidity becomes weaker at a higher asymmetry and it even vanishes at high enough asymmetries. At high asymmetries, the neutron 3PF2 superfluidity turns out to be much stronger than the proton one, implying that the neutron 3PF2 superfluidity is dominated in the highly asymmetric dense interior of neutron stars.
PACS: 21.65.-f – Nuclear matter / 21.65.Cd – Asymmetric matter, neutron matter / 26.60.-c – Nuclear matter aspects of neutron stars
© EPLA, 2008
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