Spin-polarized low-density neutron matter

          @misc{ pirsa_PIRSA:11060016,
            doi = {10.48660/11060016},
            url = {https://pirsa.org/11060016},
            author = {Gezerlis, Alexandros},
            keywords = {Particle Physics},
            language = {en},
            title = {Spin-polarized low-density neutron matter},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {jun},
            note = {PIRSA:11060016 see, \url{https://pirsa.org}}
          }
          

Abstract

Low-density neutron matter is relevant to the study of neutron-rich nuclei and neutron star crusts. Unpolarized neutron matter has been studied extensively over a number of decades, while experimental guidance has recently started to emerge from the field of ultracold atomic gases. We study population-imbalanced neutron matter (possibly relevant to magnetars and to density functionals of nuclei) applying a Quantum Monte Carlo method that has proven successful in the field of cold atoms. We report on the first ab initio simulations of superfluid low-density polarized neutron matter. For systems with small imbalances, we find a linear dependence of the energy on the polarization, the proportionality coefficient changing with the density. We also present results for the momentum and pair distributions of the two fermionic components.