Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/135244
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Interaction-dependent photon-assisted tunneling in optical lattices: A quantum simulator of strongly-correlated electrons and dynamical Gauge fields |
Autor: | Bermúdez, Alejandro CSIC ORCID; Porras, Diego CSIC ORCID | Palabras clave: | Ultracold gases Periodically driven systems Ultracold atoms in optical lattices Quantum simulation Strongly correlated systems |
Fecha de publicación: | 12-oct-2015 | Editor: | Institute of Physics Publishing | Citación: | New Journal of Physics 17: 103021 (2015) | Resumen: | We introduce a scheme that combines photon-assisted tunneling (PAT) by a moving optical lattice with strong Hubbard interactions, and allows for the quantum simulation of paradigmatic quantum many-body models. We show that, in a certain regime, this quantum simulator yields an effective Hubbard Hamiltonian with tunable bond-charge interactions, a model studied in the context of strongly-correlated electrons. In a different regime, we show how to exploit a correlated destruction of tunneling to explore Nagaoka ferromagnetism at finite Hubbard repulsion. By changing the photon-assisted tunneling parameters, we can also obtain a t-J model with independently controllable tunneling t, super-exchange interaction J, and even a Heisenberg-Ising anisotropy. Hence, the full phase diagram of this paradigmatic model becomes accessible to cold-atom experiments, departing from the region allowed by standard single-band Hubbard Hamiltonians in the strong-repulsion limit. We finally show that, by generalizing the PAT scheme, the quantum simulator yields models of dynamical Gauge fields, where atoms of a given electronic state dress the tunneling of the atoms with a different internal state, leading to Peierls phases that mimic a dynamical magnetic field. | Descripción: | 31 págs.; 11 figs.; Open Access funded by Creative Commons Atribution Licence 3.0 | Versión del editor: | http://dx.doi.org/10.1088/1367-2630/17/10/103021 | URI: | http://hdl.handle.net/10261/135244 | DOI: | 10.1088/1367-2630/17/10/103021 | Identificadores: | doi: 10.1088/1367-2630/17/10/103021 issn: 1367-2630 |
Aparece en las colecciones: | (CFMAC-IFF) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Interaction.pdf | 2,88 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
38
checked on 13-abr-2024
WEB OF SCIENCETM
Citations
38
checked on 29-feb-2024
Page view(s)
268
checked on 19-abr-2024
Download(s)
246
checked on 19-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
Este item está licenciado bajo una Licencia Creative Commons