Monday·January 7, 2019

[Submitted on 4 Jan 2019] (cross-list from cond-mat.quant-gas)

Cold Atom Quantum Simulator for Dilute Neutron Matter

Munekazu Horikoshi · Makoto Kuwata-Gonokami

The internal structure of neutron stars and the physical properties of nuclei depend on the equation of state (EOS) of neutron matter. Dilute neutron matter is a quantum system of spin-1/2 Fermi particles interacting via s-wave scattering. Although a nuclear system and an ultracold atomic system have length scales and energy scales that differ by several orders of magnitude, both systems follow a common universal EOS considering their non-dimensional universal interaction parameters. In this study, we determine the EOS of neutron matter in the dilute region, where the influence of the s-wave scattering length is dominant but that of the effective range is small, by utilizing a quantum simulator of ultracold ${}^6$Li atoms with Feshbach resonance.