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Probing local relaxation of cold atoms in optical superlattices
A. Flesch, M. Cramer, I. P. McCulloch +2
In the study of relaxation processes in coherent non-equilibrium dynamics of quenched quantum systems, ultracold atoms in optical superlattices with periodicity two provide a very…
Area laws for the entanglement entropy - a review
J. Eisert, M. Cramer, M. B. Plenio
Physical interactions in quantum many-body systems are typically local: Individual constituents interact mainly with their few nearest neighbors. This locality of interactions is i…
Exploring local quantum many-body relaxation by atoms in optical superlattices
M. Cramer, A. Flesch, I. P. McCulloch +2
We establish a setting - atoms in optical superlattices with period 2 - in which one can experimentally probe signatures of the process of local relaxation and apparent thermalizat…
Locality of dynamics in general harmonic quantum systems
M. Cramer, A. Serafini, J. Eisert
The Lieb-Robinson theorem states that locality is approximately preserved in the dynamics of quantum lattice systems. Whenever one has finite-dimensional constituents, observables…