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http://hdl.handle.net/2445/96403
Title: | Topological phases of lattice bosons with a dynamical gauge field |
Author: | Raventós i Ribera, David Graß, Tobias Juliá-Díaz, Bruno Santos, Luis Lewenstein, Maciej |
Keywords: | Optoelectrònica Òptica quàntica Optoelectronics Quantum optics |
Issue Date: | 2-Mar-2016 |
Publisher: | American Physical Society |
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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevA.93.033605 |
It is part of: | Physical Review A, 2016, vol. 93, num. 3, p. 033605-1-033605-8 |
URI: | http://hdl.handle.net/2445/96403 |
Related resource: | http://dx.doi.org/10.1103/PhysRevA.93.033605 |
ISSN: | 1050-2947 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Publicacions de projectes de recerca finançats per la UE |
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