Regensburg 2010 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 37: MLT: Poster Session
TT 37.16: Poster
Donnerstag, 25. März 2010, 14:00–18:00, Poster A
Three-body interacting cold polar molecules in one dimension — •Gregor Foltin1, Andreas Läuchli2, and Kai Phillip Schmidt1 — 1Lehrstuhl für Theoretische Physik I, Otto-Hahn-Strasse 4, TU Dortmund, 44221 Dortmund, Germany — 2Max Planck Institut für Physik komplexer Systeme, Nöthnitzerstrasse 38, 01187 Dresden, Germany
It has been proposed recently [1] that cold polar molecules in an optical lattice can be tuned to a regime of strong three-body interactions. It is therefore an interesting question what kind of quantum phases are stabilized in a system of hardcore bosons interacting via two- and three-body forces. The effects of pure but longer range three-body interactions has been studied on the square lattice giving a cascade of solid and also supersolid phases [2]. The leading two- and three-body term has been investigated in one dimension [3] and on the honeycomb model [4]. Here we are interested in the effects of subleading terms for the one-dimensional case. To this end we use a classical approach, fermionic mean-field theory, and exact diagonalizations in order to map out the zero-temperature phase diagram.
[1] H.P. Büchler, A. Micheli, P. Zoller, Nature Physics 3, 726 (2007).
[2] K.P. Schmidt, J. Dorier, and A. Läuchli, Phys. Rev. Lett. 101, 150405 (2008).
[3] B. Capogrosso-Sansone, S. Wessel, H.P. Büchler, P. Zoller, G. Pupillo, Phys. Rev. B 79, 020503(R) (2009).
[4] L. Bonnes, H.P. Büchler, and S. Wessel arXiv:0911.0312.