CMSA Quantum Matter in Mathematics and Physics: Quantum Information Theory of the Gravitational Anomaly


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May 13, 2021 10:30 am - 12:00 pm
via Zoom Video Conferencing

Masataka Watanabe - Weizmann Institute of Science

I am going to argue that the non-vanishing gravitational anomaly in 2D CFT obstructs the existence of the well-defined notion of entanglement.
As a corollary, we will also see that the non-vanishing gravitational anomaly means the non-existence of the lattice regulator generalizing the Nielsen-Ninomiya theorem.
Time permitting, I will also comment about the variation to other anomalies and/or to 6D and 4D.
Finally, I will conclude the talk with possible future directions, in particular the implication it might have for the island conjecture.
The talk is based on my recent paper with Simeon Hellerman and Domenico Orlando [2101.03320].