Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2445/96403

Título:	Topological phases of lattice bosons with a dynamical gauge field
Autor/a:	Raventós i Ribera, David; Graß, Tobias; Juliá-Díaz, Bruno; Santos, Luis; Lewenstein, Maciej
Otros autores:	Universitat de Barcelona
Abstract:	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.
Materia(s):	-Optoelectrònica -Òptica quàntica -Optoelectronics -Quantum optics
Derechos:	(c) American Physical Society, 2016
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	American Physical Society
Compartir:

Mostrar el registro completo del ítem