Quantum Monte Carlo with non-local chiral interactions

14th Conference on Theoretical Nuclear Physics in Italy

Roggero, A.^1,2 ; Mukherjee, A.^3 ; Pederiva, F.^1,2

Physics Department, University of Trento, via Sommarive 14, I-38123 Trento, Italy^1

INFN-TIFPA, Trento Institute for Fundamental Physics and Applications, Trento, Italy^2

ECT, Villa Tambosi, I-38123 Villazzano (Trento), Italy^3

关键词: Chiral effective-field theory;    Coordinate space;    Ground state properties;    Many-body systems;    Neutron matter;    Quantum chromodynamics;    Quantum monte carlo;    Quantum Monte Carlo methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/527/1/012003/pdf
DOI  :  10.1088/1742-6596/527/1/012003

来源: IOP

【 摘 要 】

Quantum Monte Carlo methods have been used very successfully to calculate the ground state properties of a variety of nuclear and other strongly interacting many body systems. An exciting recent development in low energy nuclear physics is the formulation of nuclear Hamiltonians based on the symmetries of quantum chromodynamics via chiral effective field theory. However, the usual coordinate space based quantum Monte Carlo implementation is unsuitable for these Hamiltonians due to the presence of non-localites. Here we report on our recent work in developing a new quantum Monte Carlo algorithm suitable for these non-local Hamiltonians, and present some results for pure neutron matter.