Attractive and repulsive contributions of medium fluctuations to nuclear superfluidity

2005/02/23 by G. Gori, Fabio Ramponi, F. Ramponi +7 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Nuclear physics research studies #Quantum, superfluid, helium dynamics #nucl-th

paper · pdf · doi:10.1103/physrevc.72.011302

published as Phys.Rev. C72 (2005) 011302

arxiv created 2005/02/23 · openalex publication_date 2005/07/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Oscillations of mainly surface character (S=0 modes) give rise, in atomic nuclei, to an attractive (induced) pairing interaction, while spin (S=1) modes of mainly volume character generate a repulsive interaction, the net effect being an attraction which accounts for a sizeable fraction of the experimental pairing gap. Suppressing the particle-vibration coupling mediated by the proton degrees of freedom, i.e., mimicking neutron matter, the total surface plus spin-induced pairing interaction becomes repulsive.

Citations

• Solution of the Dyson equation for nucleons in the superfluid phase
• Influence of Induced Interactions on the Superfluid Transition in Dilute Fermi Gases

Cited by

• Pairing matrix elements and pairing gaps with bare, effective, and induced interactions