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Ab initio derivation of Hubbard models for cold atoms in optical lattices

Abstract:

We derive ab initio local Hubbard models for several optical lattice potentials of current interest, including the honeycomb and Kagom\'{e} lattices, verifying their accuracy on each occasion by comparing the interpolated band structures against the originals. To achieve this, we calculate the maximally-localized generalized Wannier basis by implementing the steepest-descent algorithm of Marzari and Vanderbilt [N. Marzari and D. Vanderbilt, Phys. Rev. B 56, 12847 (1997)] directly in one and t...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevA.87.043613

Authors


Walters, R More by this author
Cotugno, G More by this author
Johnson, TH More by this author
Journal:
Phys. Rev. A
Volume:
87
Issue:
4
Pages:
043613
Publication date:
2013-03-09
DOI:
EISSN:
1094-1622
ISSN:
1050-2947
URN:
uuid:09258ff4-45dd-4232-8e4c-633b01f8a16b
Source identifiers:
387744
Local pid:
pubs:387744
Language:
English
Keywords:

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