Superfluidity in neutron matter and symmetric nuclear matter and the effect of a microscopic three-body force

  • The neutron 3PF2 pairing gap in pure neutron matter, neutron 3PF2 gap and neutron-proton 3SD1 gap in symmetric nuclear matter have been studied by using the Brueckner-Hartree-Fock(BHF) approach and the BCS theory. We have concentrated on investigating and discussing the three-body force effect on the nucleon superfluidity. The calculated results indicate that the three-body force enhances remarkably the 3PF2 superfluidity in neutron matter. It also enhances the 3PF2 superfluidity in symmetric nuclear matter and its effect increases monotonically as the Fermi-momentum kF increases, whereas the three-body force is shown to influence only weakly the neutron-proton 3SD1 gap in symmetric nuclear matter.
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  • [1] . Dean D J, Hjorth-Jensen M. Rev. Mod. Phys., 2003, 75:6072. Lombardo U, Schulze H J. Lecture Notes in Physics, 2001,578: 303. Pines D J. de Phys. C, 1980, 2: 1114. Migdal A B. Sov. Phys. JETP, 1960, 10: 1765. ZUO W, Lejeune A, Lombardo U et al. Nucl. Phys. A, 2002,706: 4186. ZUO W, LI Z H, LU G C et al. Phys. Lett. B, 2004, 595:447. Day B D. Rev. Mod. Phys., 1967, 39: 719; ev. Mod. Phys.,1978, 50: 4958. ZUO W, Bombaci I, Lombardo U. Phys. Rev. C, 1999, 60:0246059. LI Z H, ZUO W, LU G C. Chinese Phys., 2004, 13: 184810. LU G C, LI Z H, ZUO W et al. Acta Physica Sinica, 2006,55: 8411. Baldo M. Nuclear Methods and the Nuclear Equation of State. Singapore: World Scienti c, 199912. Grange P, Lejeune A, Martzol Met al. Phys. Rev. C, 1989,40: 104013. Lejeune A, Grange P, Martzol M, Cugnon J. Nucl. Phys.A, 1986, 453: 18914. Migdal A B. Theory of Finite Fermi Systems and Appli-cations to Atomic Nuclei. London: Interscience Publisher,196715. Ring P, Schuck P. The Nuclear Many-body Problem. NewYork: Springer-Verlag, 198016. Baldo M, Cugnon J, Lejeune A, Lombardo U. Nucl. Phys.A, 1990, 515: 40917. Baldo M, Elgaroy O, Engvik L M. Hjorth-Jensen et al.Phys. Rev. C, 1998, 58: 192118. Wiringa R B, Stoks V G J, Schiavilla R. Phys. Rev. C,1995, 51: 28
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CUI Chang-Xi and ZUO Wei. Superfluidity in neutron matter and symmetric nuclear matter and the effect of a microscopic three-body force[J]. Chinese Physics C, 2008, 32(S2): 73-76.
CUI Chang-Xi and ZUO Wei. Superfluidity in neutron matter and symmetric nuclear matter and the effect of a microscopic three-body force[J]. Chinese Physics C, 2008, 32(S2): 73-76. shu
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Received: 2008-07-17
Revised: 1900-01-01
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Superfluidity in neutron matter and symmetric nuclear matter and the effect of a microscopic three-body force

    Corresponding author: ZUO Wei,

Abstract: The neutron 3PF2 pairing gap in pure neutron matter, neutron 3PF2 gap and neutron-proton 3SD1 gap in symmetric nuclear matter have been studied by using the Brueckner-Hartree-Fock(BHF) approach and the BCS theory. We have concentrated on investigating and discussing the three-body force effect on the nucleon superfluidity. The calculated results indicate that the three-body force enhances remarkably the 3PF2 superfluidity in neutron matter. It also enhances the 3PF2 superfluidity in symmetric nuclear matter and its effect increases monotonically as the Fermi-momentum kF increases, whereas the three-body force is shown to influence only weakly the neutron-proton 3SD1 gap in symmetric nuclear matter.

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