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arXiv · 1906.10695

Generating quantum multi-criticality in topological insulators by periodic driving

Paolo Molignini·Wei Chen·R. Chitra
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Abstract

We demonstrate that the prototypical two-dimensional Chern insulator hosts exotic quantum multi-criticality in the presence of an appropriate periodic driving: a linear Dirac-like transition coexists with a nodal loop-like transition caused by emerging symmetries. The existence of multiple universality classes and scaling laws can be unambiguously captured by a single renormalization group approach based on the stroboscopic Floquet Hamiltonian, regardless of whether the topological transition is associated with the anomalous edge modes or not.

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Paolo Molignini, Wei Chen, R. Chitra. 2019-06-25. Generating quantum multi-criticality in topological insulators by periodic driving. https://doi.org/10.1103/physrevb.101.165106

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