Pairing in bulk nuclear matter beyond BCS

D. Ding, S. J. Witte, W. H. Dickhoff, H. Dussan, A. Rios, A. Polls

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of short-range correlations on the spectral distribution of neutrons is incorporated in the solution of the gap equation for the 3P2-3F2 coupled channel in pure neutron matter. This effect is studied for different realistic interactions including one based on chiral perturbation theory. The gap in this channel vanishes at all relevant densities due to the treatment of these correlations. We also consider the effect of long-range correlations by including polarization terms in addition to the bare interaction which allow the neutrons to exchange density and spin fluctuations governed by the strength of Landau parameters allowed to have reasonable values consistent with the available literature. Preliminary results indicate that reasonable values of these parameters do not generate a gap in the 3P2-3F2 coupled channel either for all three realistic interactions although the pairing interaction becomes slightly more attractive.

Original languageEnglish
Title of host publication4rth Conference on Nuclei and Mesoscopic Physics 2014
EditorsVladimir Zelevinsky, Alex Levchenko, Pawel Danielewicz, Pawel Danielewicz
PublisherAmerican Institute of Physics Inc.
Pages73-80
Number of pages8
ISBN (Electronic)9780735412569
DOIs
StatePublished - 2014
Event4th Conference on Nuclei and Mesoscopic Physic, NMP 2014 - East Lansing, United States
Duration: May 5 2014May 9 2014

Publication series

NameAIP Conference Proceedings
Volume1619
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference4th Conference on Nuclei and Mesoscopic Physic, NMP 2014
Country/TerritoryUnited States
CityEast Lansing
Period05/5/1405/9/14

Keywords

  • BCS
  • long-range correlations
  • neutron matter
  • nuclear matter
  • short-range correlations
  • Superfluidity

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