Low-dimensional physics of ultracold gases with bound states and the sine-Gordon model

Thierry Jolicoeur 1, Evgeni Burovski 2, Giuliano Orso 3

European Physical Journal – Special Topics 217 (2013) 3-12

One-dimensional systems of interacting atoms are an ideal laboratory to study the Kosterlitz-Thouless phase transition. In the renormalization group picture there is essentially a two-parameter phase diagram to explore. We first present how detailed experiments have shown direct evidence for the theoretical treatment of this transition. Then generalization to the case of two-component systems with bound state formation is discussed. Trimer formation in the asymmetric attractive Hubbard model involve in a crucial way this kind of physics.

  • 1 : Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS)
    CNRS : UMR8626 – Université Paris XI – Paris Sud
  • 2 : Department of Physics
    Lancaster University
  • 3 : Matériaux et Phénomènes Quantiques (MPQ)
    CNRS : FR2437 – Université Paris VII – Paris Diderot
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