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dc.contributor.author | Burrello, M. | - |
dc.contributor.author | Fulga, I.C. | - |
dc.contributor.author | Alba, Emilio | - |
dc.contributor.author | Lepori, L. | - |
dc.contributor.author | Trombettoni, A | - |
dc.date.accessioned | 2014-01-17T11:43:46Z | - |
dc.date.available | 2014-01-17T11:43:46Z | - |
dc.date.issued | 2013 | - |
dc.identifier | doi: 10.1103/PhysRevA.88.053619 | - |
dc.identifier | issn: 1050-2947 | - |
dc.identifier.citation | Physical review A 88 : 053619 (2013) | - |
dc.identifier.uri | http://hdl.handle.net/10261/89591 | - |
dc.description.abstract | We analyze a tight-binding model of ultracold fermions loaded in an optical square lattice and subjected to a synthetic non-Abelian gauge potential featuring both a magnetic field and a translationally invariant SU(2) term. We consider in particular the effect of broken time-reversal symmetry and its role in driving nontrivial topological phase transitions. By varying the spin-orbit coupling parameters, we find both a semimetal-insulator phase transition and a topological phase transition between insulating phases with different numbers of edge states. The spin is not a conserved quantity of the system, and the topological phase transitions can be detected by analyzing its polarization in time-of-flight images, providing a clear diagnostic for the characterization of the topological phases through the partial entanglement between spin and lattice degrees of freedom. © 2013 American Physical Society. | - |
dc.description.sponsorship | This work was supported by the Dutch Science Foundation NWO/FOM and by an ERC Advanced Investigator Grant. A.T. acknowledges support from the STREP MatterWave. E.A. acknowledges funding from FPU 2009-1761. L.L. also acknowledges a grant from Banco de Santander and nancial support from ERDF. | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isversionof | Preprint | - |
dc.rights | openAccess | - |
dc.title | Topological phase transitions driven by non-Abelian gauge potentials in optical square lattices | - |
dc.type | preprint | - |
dc.identifier.doi | 10.1103/PhysRevA.88.053619 | - |
dc.date.updated | 2014-01-17T11:43:47Z | - |
dc.description.version | Peer Reviewed | - |
dc.type.coar | http://purl.org/coar/resource_type/c_816b | es_ES |
item.openairetype | preprint | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.openairecristype | http://purl.org/coar/resource_type/c_816b | - |
item.fulltext | With Fulltext | - |
item.languageiso639-1 | en | - |
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