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Statut |
Confirmé |
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Série |
LPTENS-HE |
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Domaines |
hep-th |
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Date |
Mercredi 15 Juin 2022 |
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Heure |
15:00 |
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Institut |
LPENS |
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Salle |
Salle Djebar (29 rue d'Ulm) AND zoom |
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Nom de l'orateur |
Mukhopadhyay |
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Prenom de l'orateur |
Ayan |
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Addresse email de l'orateur |
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Institution de l'orateur |
Indian Inst. Tech., Madras |
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Titre |
Generalized Clausius inequality, error tolerant memory and the quantum null energy condition |
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Résumé |
Quantum thermodynamics gives a generalization of the Clausius inequality stating
that the irreversible entropy production is not only positive, but also has both a
lower and an upper bound for a given physical process. It is, however, not
possible generically to compute or even estimate these bounds. We show that the
study of the quantum null energy condition in holographic quenches gives
explicit upper and lower bounds for the irreversible entropy production in two
dimensional systems (near criticality) for transitions which are faster than any
microscopic scale. For a given change in temperature, we explicitly compute the
lower and upper bounds on the irreversible production of entropy, and also similar
bounds on rates of growth of entanglement. We also apply these methods to obtain a
refined version of Landuer principle, in which we compute the minimum
irreversible entropy production needed to delete encoded quantum information,
and obtain analytic results for a large number of encoding qubits. We also find
that, for certain forms of encoding, fast deletion is impossible if the encoded
bits are squeezed over a sufficiently small length scale. This circumvents some
issues in no-go theorems based on stabilizer codes which forbid self-correcting
quantum memory in lower dimensions. The talk will be based on arXiv:2109.09914,
arXiv:2202.00022 and some upcoming works. |
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Numéro de preprint arXiv |
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Commentaires |
In person and hybrid. Zoom link us06web.zoom.us/j/86271145836?
pwd=MjhXUWRJRkpZdkRkL08xcTVDVjFHUT09 Meeting ID: 862 7114 5836 Passcode:
565571 |
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Fichiers attachés |
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