Sign-free stochastic mean-field approach to strongly correlated phases of ultracold fermions
| dc.creator | Juillet, Olivier | |
| dc.date | 2006-09-04 | |
| dc.date | 2007-05-30 | |
| dc.date.accessioned | 2026-07-07T08:20:17Z | |
| dc.date.available | 2026-07-07T08:20:17Z | |
| dc.description | We propose a new projector quantum Monte-Carlo method to investigate the ground state of ultracold fermionic atoms modeled by a lattice Hamiltonian with on-site interaction. The many-body state is reconstructed from Slater determinants that randomly evolve in imaginary-time according to a stochastic mean-field motion. The dynamics prohibits the crossing of the exact nodal surface and no sign problem occurs in the Monte-Carlo estimate of observables. The method is applied to calculate ground-state energies and correlation functions of the repulsive two-dimensional Hubbard model. Numerical results for the unitary Fermi gas validate simulations with nodal constraints. | |
| dc.description | Accepted for publication in New Journal of Physics | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0609063 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0609063 | |
| dc.identifier | New Journal of Physics 9 (2007) 163 | |
| dc.identifier | doi:10.1088/1367-2630/9/6/163 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135030 | |
| dc.subject | Other Condensed Matter | |
| dc.title | Sign-free stochastic mean-field approach to strongly correlated phases of ultracold fermions | |
| dc.type | text |