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:
|
|