Kenichi Kasamatsu, Ikuo Ichinose, Tetsuo Matsui
Recently, the possibility of atomic quantum simulation of dynamical gauge fields was pointed out. In this simulation, a system of cold atoms trapped on each link in an optical lattice is regarded as a simulator of a U(1) lattice gauge model under certain conditions. However to implement local gauge invariance, a fine tunning of interaction parameters among atoms is necessary. We consider a general cold-atom system with this fine tuning being relaxed and investigate the effect of gauge-symmetry breaking. In this study, we reveal the fact that a wide variety of cold atoms put on the links of an optical lattice are still to be a faithful quantum simulator for a lattice U(1) gauge-Higgs model containing a Higgs field sitting on site. Physical meaning of the Higgs phase in various quantum simulators is also discussed.
View original:
http://arxiv.org/abs/1212.4952
No comments:
Post a Comment