You are cordially invited to the SCL online seminar of the Center for the Study of Complex Systems, which will be held on Thursday, 11 March 2021 at 14:00 on Zoom. The talk entitled

Operator thermalization hypothesis vs. eigenstate thermalization hypothesis

will be given by Aleksandar Bukva (Lorentz institute, Leiden University, The Netherlands). Abstract of the talk:

Quantum systems with strong entanglement can thermalize differently from our classical understanding, through a phenomenon known as eigenstate thermalization. It was recently found that even non-interacting and by extension integrable quantum systems will display thermal relaxation when probed with a generic operator. This operator thermalization is related to, but distinct from eigenstate thermalization. In this talk we will present a numerical study of this difference on the example of a transverse-field Ising model at integrable and non-integrable (strong entanglement) regime where it is the most apparent. This is done by computing two-point correlation functions and by directly comparing the matrix elements in the both regimes.

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