Pairing in pure neutron matter
Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India
2 Université Paris-Saclay, CNRS-IN2P3, IJCLab, 91405, Orsay Cedex, France
Accepted: 23 December 2020
Published online: 1 April 2021
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.
© The Author(s), under exclusive licence to EDP Sciences, Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021