Quantum dynamics and long-range interactions

by Prof. Alessandro Silva

at Condensed Matter Seminar

Mon, 13 Jan 2020, 11:30
Sacta-Rashi Building for Physics (54), room 207


In this talk I will discuss a variety of interesting phenomena that occur when spin chains with long-range interactions are driven out of equilibrium. In contrast with short range systems, long-range interactions open up the possibility of observing long-range order even in non equilibrium conditions. The resulting dynamical critical points turn out to be affected strongly by inhomogeneous fluctuations, giving rise to new chaotic phases. In addition, the presence of periodic drive can stabilise unstable phases of matter against all possible fluctuations, a true many-body analogue of a Kapitza pendulum. The effect of dynamical criticality on the fine structure of the quantum states, described by the OTOC, Fisher information and entanglement entropies, will also be discussed.

Created on 19-10-2019 by Meidan, Dganit (dganit)
Updaded on 06-01-2020 by Meidan, Dganit (dganit)