Intertwined topological phases induced by emergent symmetry protection

Daniel González-Cuadra (), Alejandro Bermudez, Przemysław R. Grzybowski, Maciej Lewenstein and Alexandre Dauphin ()
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Daniel González-Cuadra: ICFO-Institut de Ciències Fotòniques
Alejandro Bermudez: Universidad Complutense
Przemysław R. Grzybowski: ICFO-Institut de Ciències Fotòniques
Maciej Lewenstein: ICFO-Institut de Ciències Fotòniques
Alexandre Dauphin: ICFO-Institut de Ciències Fotòniques

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract The dual role played by symmetry in many-body physics manifests itself through two fundamental mechanisms: spontaneous symmetry breaking and topological symmetry protection. These two concepts, ubiquitous in both condensed matter and high energy physics, have been applied successfully in the last decades to unravel a plethora of complex phenomena. Their interplay, however, remains largely unexplored. Here we report how, in the presence of strong correlations, symmetry protection emerges from a set of configurations enforced by another broken symmetry. This mechanism spawns different intertwined topological phases, where topological properties coexist with long-range order. Such a singular interplay gives rise to interesting static and dynamical effects, including interaction-induced topological phase transitions constrained by symmetry breaking, as well as a self-adjusted fractional pumping. This work paves the way for further exploration of exotic topological features in strongly-correlated quantum systems.

Date: 2019
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DOI: 10.1038/s41467-019-10796-8

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