Pairing in pure neutron matter

We review the long standing problem of superfluid pairing in pure neutron matter. For the s-wave pairing, we summarize the state of the art of many-body approaches including different nn interactions, medium polarization, short-range correlations and BCS-BEC crossover effects, and compare them with quantum Monte Carlo results at low densities. We also address pairing in the p-wave, which appears at higher densities and, hence, has large uncertainties due to the poorly constrained interactions, medium effects and many-body forces.

Automated summary

The paper reviews the long-standing problem of superfluid pairing in pure neutron matter, focusing on s-wave and p-wave pairing. It summarizes the advances in many-body approaches and compares them with quantum Monte Carlo results at low densities, highlighting the uncertainties associated with p-wave pairing at higher densities.