Journal
PHYSICAL REVIEW A
Volume 82, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.82.061603
Keywords
-
Categories
Funding
- Army Research Office [56693-PH]
- National Science Foundation [DMR-1006217]
- Optical Lattice Emulator program
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1006217] Funding Source: National Science Foundation
Ask authors/readers for more resources
Ground-state properties of the repulsive Hubbard model on a cubic lattice are investigated by means of the auxiliary-field quantum Monte Carlo method. We focus on low-density systems with varying on-site interaction U/t, as a model relevant to recent experiments on itinerant ferromagnetism in a dilute Fermi gas with contact interaction. Twist-average boundary conditions are used to eliminate open-shell effects and large lattice sizes are studied to reduce finite-size effects. The sign problem is controlled by a generalized constrained path approximation. We find no ferromagnetic phase transition in this model. The ground-state correlations are consistent with those of a paramagnetic Fermi liquid.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available