Theoretical Nanophysics
print


Breadcrumb Navigation


Content

Non-abelian symmetries and non-equilibrium front propagation in the Hubbard model

Prof. Gergely Zaránd Head of the Exotic Quantum Phases "Momentum" & MTA-BME Quantum Dynamics and Correlations Research Group at the Department of Theoretical Physics Faculty of Natural Sciences, BME (Budapest)

29.11.2022 at 10:00 

We develop a non-Abelian time evolving block decimation approach to study open systems governed by Lindbladian time evolution, while exploiting abelian or non-abelian symmetries. We illustrate this method by applying it to the one-dimensional SU(2) Hubbard model on a semi-infinite lattice with localized particle loss at one end. We observe a ballistic front propagation with strongly renormalized front velocity, and a hydrodynamic current density profile. For large loss rates, a suppression of the particle current is observed, as a result of the quantum Zeno effect. Operator entanglement is found to propagate faster than the depletion profile, preceding the latter.

B 101, Theresienstr. 39.