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TT: Fachverband Tiefe Temperaturen

TT 73: Correlated Electrons: Nonequilibrium Quantum Many-Body Systems 2

TT 73.3: Talk

Thursday, March 23, 2017, 15:30–15:45, HSZ 304

Spatiotemporal correlation build-up after an interaction quench in the Luttinger model — •Nils O. Abeling, Markus Schmitt, Manuel Kreye, and Stefan Kehrein — Institut für Theoretische Physik, Georg-August-Universität, Göttingen

We study the evolution of density-density correlations at different times and distances in the exactly solvable Luttinger model after a sudden quench from the ground state. We discuss the difference between correlations and susceptibilities, and how these results can be interpreted from the point of view of Lieb-Robinson bounds. For the correlation functions we specifically show that pre-quench entanglement in the ground state leads to algebraically decaying long distance tails outside the light cone.