Quantum Monte Carlo Lattice Simulation of Thermal Properties of Low-Density Neutron Matter
ORAL
Abstract
Thermal properties of low-density neutron matter are investigated by nuclear many-body simulation on three-dimensional cubic lattice. Determinantal quantum Monte Carlo calculations are carried out for the Hamiltonian with a coupling constant of the neutron-neutron interaction determined from effective field theory. Method of finite-size scaling is applied to extract thermodynamical information. Phase diagram shows that low-density neutron matter undergoes a phase transition from a superfluid state to normal, as the temperature or the density increases. The results are also compared with the existing mean-field and related calculations.
*This work is supported by the U.S. DOE at CSUN (DE-FG03-87ER40347), by the U.S. NSF at Caltech (PHY0071856 and PHY0244899), and by the Japanese Ministry of Education, Culture, Sports, Science and Technology at Tokyo Tech (a 21st Century COE Program).
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