Quantum chaos in the SYK model

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• Jan Behrends
• Thursday 12 November 2020, 13:10-14:00
• ONLINE - Email organiser to request link - Details to be sent by email.

If you have a question about this talk, please contact David Gershlick.

What is quantum chaos and how is it related to black holes? Chaotic systems distribute any inserted information over themselves; the speed of this distribution of information reveals the degree of chaos. In this talk, I will briefly introduce a notion of quantum chaos before turning to a model that is the archetypical example for a maximally chaotic system: the Sachdev-Ye-Kitaev (SYK) model. The behavior of the SYK model is fundamentally linked to black holes, where information seems to disappear beyond their event horizon. As I will show, the SYK model is supersymmetric in its “vanilla” form without any fine-tuning of its parameters. This implies that certain properties of the supersymmetry determine how information spreads — in other words, how chaos spreads — through the system; the supersymmetry thus brings structure into chaos.

This talk is part of the Darwin College Science Seminars series.

This talk is included in these lists:

• AUB_Cambridge Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Chris Davis' list
• Darwin College Research Talks
• Darwin College Science Seminars
• Darwin Lectures and Seminars
• Guy Emerson's list
• Interested Talks
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• ONLINE - Email organiser to request link - Details to be sent by email
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