Campo, Vivaldo L, Quintanilla, Jorge, Hooley, Chris (2009) Possible critical behavior driven by the confining potential in optical lattices with ultra-cold fermions. Physica B: Condensed Matter, 404 (19). pp. 3328-3331. ISSN 0921-4526. (doi:10.1016/j.physb.2009.07.089) (KAR id:25603)
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Official URL: http://dx.doi.org/10.1016/j.physb.2009.07.089 |
Abstract
A recent paper [V.L. Campo, et al., Phys. Rev. Lett. 99 (2007) 240403] has proposed a two-parameter scaling method to determine the phase diagram of the fermionic Hubbard model from optical lattice experiments. Motivated by this proposal, we investigate in more detail the behavior of the ground-state energy per site as a function of trap size (L) and confining potential (V(x) = t(x/L)(alpha)) in the one-dimensional case. Using the BALDA-DFT method, we find signatures of critical behavior as alpha ->infinity.
Item Type: | Article |
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DOI/Identification number: | 10.1016/j.physb.2009.07.089 |
Uncontrolled keywords: | Physics of Quantum Materials, Hubbard model, Critical behavior, Confining potential, Ultra-cold, fermions |
Subjects: | Q Science > QC Physics |
Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
Funders: |
Engineering and Physical Sciences Research Council (https://ror.org/0439y7842)
Science and Technology Facilities Council (https://ror.org/057g20z61) |
Depositing User: | Jorge Quintanilla Tizon |
Date Deposited: | 14 Oct 2010 14:31 UTC |
Last Modified: | 05 Nov 2024 10:05 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/25603 (The current URI for this page, for reference purposes) |
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