To access the full text documents, please follow this link:

Topological phases of lattice bosons with a dynamical gauge field
Raventós i Ribera, David; Graß, Tobias; Juliá-Díaz, Bruno; Santos, Luis; Lewenstein, Maciej
Universitat de Barcelona
Optical lattices with a complex-valued tunneling term have become a standard way of studying gauge-field physics with cold atoms. If the complex phase of the tunneling is made density dependent, such a system features even a self-interacting or dynamical magnetic field. In this paper we study the scenario of a few bosons in either a static or a dynamical gauge field by means of exact diagonalization. The topological structures are identified computing their Chern number. Upon decreasing the atom-atom contact interaction, the effect of the dynamical gauge field is enhanced, giving rise to a phase transition between two topologically nontrivial phases.
Òptica quàntica
Quantum optics
(c) American Physical Society, 2016
American Physical Society

Show full item record

Related documents

Other documents of the same author

Graß, Tobias; Muschik, Christine; Celi, Alessio; Chhajlany, Ravindra W.; Lewenstein, Maciej
Ciappina, M. F; Pérez-Hernández, J. A.; Landsman, A. S.; Zimmermann, T.; Lewenstein, Maciej; Roso, L.; Krausz, F.
Ciappina, M. F.; Pérez-Hernández, J. A.; Roso, L.; Zaïr, A.; Lewenstein, Maciej
Dutta, Omjyoti; Gajda, Mariusz; Lewenstein, Maciej; Lühmann, Dirk-Sören; Malomed, Boris A.; Sowiński, Tomasz; Zakrzewski, Jakub