Details
| Original language | English |
|---|---|
| Article number | 033605 |
| Journal | Physical Review A |
| Volume | 93 |
| Issue number | 3 |
| Publication status | Published - 2 Mar 2016 |
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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Physical Review A, Vol. 93, No. 3, 033605, 02.03.2016.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Topological phases of lattice bosons with a dynamical gauge field
AU - Raventós, David
AU - Graß, Tobias
AU - Juliá-Díaz, Bruno
AU - Santos, Luis
AU - Lewenstein, Maciej
PY - 2016/3/2
Y1 - 2016/3/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84960392110&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.93.033605
DO - 10.1103/PhysRevA.93.033605
M3 - Article
AN - SCOPUS:84960392110
VL - 93
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 3
M1 - 033605
ER -