Loschmidt echo and dynamical fidelity in periodically driven quantum systems

Shraddha Sharma, Angelo Russomanno, Giuseppe E. Santoro +1

We study the dynamical fidelity $\mathcal{F}(t)$ and the Loschmidt echo $\mathcal{L}(t)$, following a periodic driving of the transverse magnetic field of a quantum Ising chain (…