Spin Susceptibility in Neutron Matter from Quantum Monte Carlo Calculations

Luca Riz, Francesco Pederiva, Diego Lonardoni, Stefano Gandolfi

Published 2020-10-23Version 1

The spin susceptibility in pure neutron matter is computed from auxiliary field diffusion Monte Carlo calculations over a wide range of densities. Calculations are performed for different spin asymmetries, using twist-averaged boundary conditions to reduce finite-size effects. The employed nuclear interactions include both the phenomenological Argonne AV8$^{\prime}$+UIX potential and local interactions derived from chiral effective field theory up to next-to-next-to-leading order.