Mainz 2022 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 17: Structure and Dynamics of Nuclei III
HK 17.4: Talk
Monday, March 28, 2022, 17:00–17:15, HK-H6
Configuration Interaction Monte Carlo with Chiral Three-Body Forces — •Pierre Arthuis1,2,3, Carlo Barbieri3,4,5, Francesco Pederiva6,7, and Alessandro Roggero6,7,8 — 1Technische Universität Darmstadt, Department of Physics — 2ExtreMe Matter Institute EMMI, GSI — 3Department of Physics, University of Surrey — 4Dipartimento di Fisica, Università degli Studi di Milano — 5INFN, Sezione di Milano — 6Physics Department, University of Trento — 7INFN-TIFPA Trento Institute of Fundamental Physics and Applications — 8InQubator for Quantum Simulation (IQuS), Department of Physics, University of Washington
Neutron matter from saturation to low densities is a particluarly interesting system, its equation of state (EoS) directly affecting the structure of the inner core of neutron stars and the skin of heavy neutron-rich nuclei. High-accuracy methods are thus of remarkable importance.
Configuration Interaction Monte Carlo (CIMC) combines the natural language needed to deal with momentum-dependent interactions to the efficiency of Quantum Monte Carlo techniques while satisfying the variational ansatz. The method demonstrated very efficient for two-body Hamiltonians, but was never extended to tackle three-body interactions.
Here we present the first CIMC results obtained for cold neutron matter at densities below and around nuclear saturation density with a chiral potential including three-body forces. Besides the EoS of neutron matter, we will display also results for the momentum distribution and the static structure factor.