Schedule Sep 30, 2021
Subleading Weingartens
Zhenbin Yang, Stanford
Cite as: doi:10.26081/K6PW5X

Haar integrals over the unitary group contain subleading terms that are needed for unitarity. We study analogous effects in the time evolution operators of JT gravity and Brownian SYK. In JT gravity with bulk matter we find an explanation for the first subleading terms, and in Brownian SYK we find configurations that can explain the full series. An important role is played by slightly off-shell modes that are exponentially amplified by chaos.

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