Physics Seminar
Date: Thursday, 23 November 2023
Time: 11:45 AM
Venue: Lecture Hall 202
Time Entanglement and Pseudo Entropy
Hitesh Saini
Chennai Mathematical Institute.
23-11-23

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Abstract

This talk is based on the paper arxiv: 2303.01307. In this talk, I will present the aspects of the time evolution operator regarded as a density operator and associated entanglement-like structures in simple quantum systems. These involve timelike separations and generically lead to complex-valued entropy. Then I’ll discuss relations with reduced transition- matrices and pseudo entropy. For instance, a related quantity involves the time evolution operator along with a projection onto some initial state, which amounts to analysing pseudo-entropy for the initial state and its time-evolved final state. Then I’ll talk about special examples of time-dependent interactions and the corresponding time entanglement structures.