Hagymási I, Hubig C, Legeza Ö, Schollwöck U
Department of Physics, Arnold Sommerfeld Center for Theoretical Physics (ASC), Fakultät für Physik, Ludwig-Maximilians-Universität München, D-80333 München, Germany.
Munich Center for Quantum Science and Technology (MCQST), Schellingstr. 4, D-80799 München, Germany.
Phys Rev Lett. 2019 Jun 28;122(25):250601. doi: 10.1103/PhysRevLett.122.250601.
We consider sudden quenches across quantum phase transitions in the S=1 XXZ model starting from the Haldane phase. We demonstrate that dynamical phase transitions may occur during these quenches that are identified by nonanalyticities in the rate function for the return probability. In addition, we show that the temporal behavior of the string order parameter is intimately related to the subsequent dynamical phase transitions. We furthermore find that the dynamical quantum phase transitions can be accompanied by enhanced two-site entanglement.
