Topological phase transitions in finite-size periodically driven translationally invariant systems
Topological phase transitions in finite-size periodically driven translationally invariant systems
It is known that, in the thermodynamic limit, the Chern number of a translationally invariant system cannot change under unitary time evolutions that are smooth in momentum space. Yet a real-space counterpart of the Chern number, the Bott index, has been shown to change in periodically driven systems with open …