by Dr. Sourav Nandy

Abstract:

In this talk, I plan to discuss some recent progress in understanding certain aspects of quantum transport and dynamics of driven quantum systems. The first part of the talk will focus on high-temperature spin transport in a near-integrable quantum spin chain. In particular, I shall present two striking examples of anomalous (non-diffusive) transport, namely superdiffusion and subdiffusion. The overarching goal of this part is to provide insights into the robustness, emergence, and crossover of anomalous transport phenomena in quantum spin chains. In the second part of the talk, I will turn to periodically driven (Floquet) systems as a representative example of continually driven quantum matter. Specifically, I plan to address the following two themes: i) application of machine learning in understanding Floquet system in both prethermal and heating regime, ii) fate of weak ergodicity breaking in Rydberg atom chains arising from quantum many-body scars under periodic driving.