Pairing properties of nucleonic matter employing dressed nucleons

Abstract

A survey of pairing properties of nucleonic matter is presented that includes the off-shell propagation associated with short-range and tensor correlations. For this purpose, the gap equation has been solved in its most general form employing the complete energy and momentum dependence of the normal self-energy contributions. The latter correlations include the self-consistent calculation of the nucleon self-energy that is generated by the summation of ladder diagrams. This treatment preserves the conservation of particle number unlike approaches in which the self-energy is based on the Brueckner-Hartree-Fock approximation. A huge reduction in the strength as well as temperature and density range of ${}^3{S}_1$-${}^3{D}_1$ pairing is obtained for nuclear matter as compared to the standard BCS treatment. Similar dramatic results pertain to ${}^1{S}_0$ pairing of neutrons in neutron matter.

15 pages, 10 figures

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• Pairing in nuclear systems: from neutron stars to finite nuclei
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• Screening of nuclear pairing in nuclear and neutron matter
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• Depletion of the nuclear Fermi sea
• Pairing in high-density neutron matter including short- and long-range correlations
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• Hot neutron matter from a Self-Consistent Green's Functions approach
• Novel applications of the dispersive optical model
• Flux tubes and the type-I/type-II transition in a superconductor coupled to a superfluid
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• BCS-BEC Crossover and Thermodynamics in Asymmetric Nuclear Matter with Pairings in Isospin I=0 and I=1 Channels
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• Leptonic contribution to the bulk viscosity of nuclear matter
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• Low-density homogeneous symmetric nuclear matter: disclosing dinucleons in coexisting phases
• Correlations in Nuclear Matter
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