Auxiliary-field quantum Monte Carlo method for strongly paired fermions
Author(s): J. Carlson, Stefano Gandolfi, Kevin E. Schmidt, and Shiwei Zhang
We solve the zero-temperature unitary Fermi gas problem by incorporating a BCS importance function into the auxiliary-field quantum Monte Carlo method. We demonstrate that this method does not suffer from a sign problem and that it increases the efficiency of standard techniques by many orders of ma…
[Phys. Rev. A 84, 061602] Published Wed Dec 07, 2011