Diffusion Monte Carlo calculations for the ground states of atoms and ions in neutron star magnetic fields

摘要

The diffusion quantum Monte Carlo method is extended to solve the oldtheoretical physics problem of many-electron atoms and ions in intense magneticfields. The feature of our approach is the use of adiabatic approximation wavefunctions augmented by a Jastrow factor as guiding functions to initialize thequantum Monte Carlo prodecure. We calcula te the ground state energies of atomsand ions with nuclear charges from Z= 2, 3, 4, ..., 26 for magnetic fieldstrengths relevant for neutron stars.