Quantitative determination of the Hubbard model phase diagram from optical lattice experiments by two-parameter scaling

Campo, Vivaldo L and Capelle, Klaus and Quintanilla, Jorge and Hooley, Chris (2007) Quantitative determination of the Hubbard model phase diagram from optical lattice experiments by two-parameter scaling. Physical Review Letters, 99 (24). (Full text available)

PDF
Download (244kB)
[img]
Preview
Official URL
http://dx.doi.org/10.1103/PhysRevLett.99.240403

Abstract

We propose an experiment to obtain the phase diagram of the fermionic Hubbard model, for any dimensionality, using cold atoms in optical lattices. It is based on measuring the total energy for a sequence of trap profiles. It combines finite-size scaling with an additional “finite-curvature scaling” necessary to reach the homogeneous limit. We illustrate its viability in the 1D case, simulating experimental data in the Bethe-ansatz local-density approximation. Including experimental errors, the filling corresponding to the Mott transition can be determined with better than 3% accuracy.

Item Type: Article
Additional information: Article Number: 240403
Subjects: Q Science > QC Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Jorge Quintanilla
Date Deposited: 14 Oct 2010 14:37
Last Modified: 07 Apr 2014 14:31
Resource URI: http://kar.kent.ac.uk/id/eprint/25602 (The current URI for this page, for reference purposes)
  • Depositors only (login required):

Downloads

Downloads per month over past year