Abstract
In this work we calculate the [Formula Presented] gap energies of Λ hyperons in neutron star matter. The calculation is based on a solution of the BCS gap equation for an effective [Formula Presented]-matrix parametrization of the Λ-Λ interaction with a nuclear matter background, presented recently by Lanskoy and Yamamoto. We find that a gap energy of a few tenths of a MeV is expected for Λ Fermi momenta up to about [Formula Presented] Implications for neutron star matter are examined, and suggest the existence of a Λ [Formula Presented] superfluid between the threshold baryon density for Λ formation and the baryon density where the Λ fraction reaches 15–20 %.
| Original language | English |
|---|---|
| Pages (from-to) | 409-416 |
| Number of pages | 8 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1998 |