Title: PAIRING PROPERTIES OF SYMMETRIC NUCLEAR MATTER IN RELATIVISTIC MEAN FIELD THEORY
Author(s): J. Li, B. Y. Sun, and J. Meng
Source: International Journal of Modern Physics E (IJMPE)
Volume: 17 Issue: 8 Page: 1441-1452 Published: September 2008
Keyword(s): Pairing correction; relativistic Hartree–Bogoliubov theory; symmetric nuclear matter; effective pairing interaction
KeyWords Plus: HARTREE-BOGOLIUBOV THEORY; GROUND-STATE PROPERTIES; NEUTRON DRIP-LINE; PSEUDOSPIN SYMMETRY; EXOTIC NUCLEI; SUPERFLUIDITY; HALO
History: Received 4 June 2008
Abstract: The properties of pairing correlations in symmetric nuclear matter are studied in the relativistic mean field (RMF) theory with the effective interaction, PK1. Considering the well-known problem that the pairing gap at the Fermi surface calculated with RMF effective interactions is three times larger than that with the Gogny force, an effective factor in the particle–particle channel is introduced. For the RMF calculation with PK1, an effective factor of 0.76 gives a maximum pairing gap of 3.2 MeV at a Fermi momentum of 0.9 fm-1, which is consistent with the result with the Gogny force.
Figure: The pairing gap at the Fermi surface as a function of the Fermi momentum for different effective interactions.