Journal
PHYSICAL REVIEW B
Volume 99, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.99.045139
Keywords
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Funding
- Spanish Ministry MINECO (National Plan 15 Grant: FISICATEAMO) [FIS2016-79508-P]
- Spanish Ministry MINECO (National Plan 15 Grant: SEVERO OCHOA) [SEV-2015-0522]
- European Social Fund
- Fundacio Cellex
- Generalitat de Catalunya (AGAUR Grant) [2017 SGR 1341]
- Generalitat de Catalunya (CERCA/Program)
- ERC AdG OSYRIS
- EU FETPRO QUIC
- National Science Centre, PolandSymfonia Grant [2016/20/W/ST4/00314]
- ICFOstepstone-Ph.D. Programme for EarlyStage Researchers in Photonics - Marie Sklodowska-Curie Co-funding programmes of the European Commission [GA665884]
- Juan de la Cierva fellowship [IJCI-2017-33180]
- Foundation for Polish Science within the Homing progamme - European Union under the European Regional Development Fund
- Ramon y Cajal program [RYC-2016-20066]
- spanish MINECO project [FIS2015-70856-P]
- CAM PRICYT project [QUITEMAD+ S2013/ICE-2801]
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We study a one-dimensional model of interacting bosons coupled to a dynamical Z(2) field, the Z(2) Bose-Hubbard model, and analyze the interplay between spontaneous symmetry breaking and topological symmetry protection. In a previous work, we showed how this model exhibits a spontaneous breaking of the translational symmetry through a bosonic Peierls transition. Here we find how, at half filling, the resulting phase also displays topological features that coexist with the presence of long-range order and yields a topological bond order wave. Using both analytical and numerical methods, we describe the properties of this phase, showing that it cannot be adiabatically connected to a topological phase of noninteracting bosons, and thus constitutes an instance of an interaction-induced symmetry-breaking topological insulator.
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