Speaker
Albert Gasull
(MPQ)
Description
The Kitaev model on the honeycomb lattice is a paradigmatic system known to host a wealth of nontrivial topological phases and Majorana edge modes. In the static case, the Majorana edge modes are nondispersive. When the system is periodically driven in time, such edge modes can disperse and become chiral. We obtain the full phase diagram of the driven model as a function of the coupling and the driving period. We characterize the quantum criticality of the different topological phase transitions in both the static and driven model via the notions of Majorana-Wannier state correlation functions and momentum-dependent fidelity susceptibilities.
Primary authors
Albert Gasull
(MPQ)
Paolo Molignini
(University of Cambridge)
Prof.
Ramasubramanian Chitra
(ETH Zürich)
Wei Chen
