Berlin 2012 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 19: Correlated Electrons: (General) Theory 2
TT 19.10: Talk
Tuesday, March 27, 2012, 12:15–12:30, H 3010
Supersymmetry in Rydberg-dressed lattice fermions — •Hendrik Weimer1, Liza Huijse1, Alexey Gorshkov2, Guido Pupillo3, Peter Zoller4, Mikhail Lukin1, and Eugene Demler1 — 1Physics Department, Harvard University, Cambridge, MA, USA — 2IQI, Caltech, Pasadena, CA, USA — 3University of Strasbourg, Strasbourg, France — 4University of Innsbruck and IQOQI, Innsbruck, Austria
Supersymmetry is a powerful tool that allows the characterization of
strongly correlated many-body systems, in particular in the case of
supersymmetric extensions of the fermionic Hubbard model [1]. At the
same time, these models can exhibit rich and exotic physics on their
own, such as flat bands or exponentially large ground state
degeneracy. We show that such lattice models can be realized with
Rydberg-dressed fermions in optical lattices. Strong interactions
within the ground state manifold of the atoms can be realized by
admixing a weak contribution of a highly excited Rydberg state [2]. By
tuning the experimental parameters away from the supersymmetric point,
it is possible to assess the validity of a supersymmetric approach to
strongly correlated electrons in a systematic way.
P. Fendley, K. Schoutens, J. de Boer, PRL 90, 120402 (2003).
J. Honer, H. Weimer, T. Pfau, H. P. Büchler,
PRL 105, 160404 (2010).