Hopping modulation in a one-dimensional Fermi-Hubbard Hamiltonian

Francesco Massel*, Mikko J. Leskinen, Päivi Törmä

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

13 Citations (Scopus)
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Abstract

We consider a strongly repulsive two-component Fermi gas in a one-dimensional optical lattice described in terms of a Hubbard Hamiltonian. We analyze the response of the system to a periodic modulation of the hopping amplitude in the presence of a large two-body interaction. By (essentially) the exact simulations of the time evolution, we find a nontrivial double occupancy frequency dependence. We show how the dependence relates to the spectral features of the system given by the Bethe ansatz. The discrete nature of the spectrum is clearly reflected in the double occupancy after a long enough modulation time. We also discuss the implications of the 1D results to experiments in higher dimensional systems.

Original languageEnglish
Article number066404
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume103
Issue number6
DOIs
Publication statusPublished - 7 Aug 2009
MoE publication typeA1 Journal article-refereed

Keywords

  • Fermi-Hubbard
  • modulation
  • one-dimension

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