Supersolids in confined fermions on one-dimensional optical lattices

F. Karim Pour, M. Rigol, S. Wessel, A. Muramatsu

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

Using quantum Monte Carlo simulations, we show that density-density and pairing correlation functions of the one-dimensional attractive fermionic Hubbard model in a harmonic confinement potential are characterized by the anomalous dimension Kρ of a corresponding periodic system, and hence display quantum critical behavior. The corresponding fluctuations render the SU(2) symmetry breaking by the confining potential irrelevant, leading to structure form factors for both correlation functions that scale with the same exponent upon increasing the system size, thus giving rise to a (quasi)supersolid.

Original languageEnglish (US)
Article number161104
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number16
DOIs
StatePublished - Apr 19 2007

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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