Quantum bounds from fluctuation-dissipation relations
ORAL
Abstract
One may express the out of time order correlators (OTOC) as two-point functions in a replicated space. The quantum bound to chaos derives then from the usual quantum fluctuation-dissipation relations (FDT). Motivated by this result, I will discuss how the quantum FDT acts as a blurring (on a Planckian timescale) of general two-point functions expressed in the time-domain, thus imposing bounds on their rate of change.
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Publication: Quantum bounds and fluctuation-dissipation relations, S Pappalardi, L Foini, J Kurchan - arXiv preprint arXiv:2110.03497, 2021
Presenters
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Silvia Pappalardi
Ecole Normale Superieure, Laboratoire de Physique de l'École normale supérieure
Authors
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Silvia Pappalardi
Ecole Normale Superieure, Laboratoire de Physique de l'École normale supérieure
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Laura Foini
IPhT, CNRS, CEA, Université Paris Saclay
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Jorge Kurchan
Laboratoire de Physique de l'École normale supérieure, Laboratoire de Physique de l'Ecole Normale Supérieure