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New Model Sheds Light on Quantum Chaos Dynamics

10/25/2025

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Summary

Story summary

Researchers from Fudan University and Renmin University of China developed the Brownian SYK-Hubbard model by combining the Sachdev-Ye-Kitaev (SYK) random interactions with Hubbard-type interactions.
The model enables researchers to study how local and non-local effects interact as a transition to a Mott insulating state emerges when interaction strength increases.
The work identifies a breakdown of expected limits on chaotic behavior, indicating new paths for understanding quantum chaos and many-body physics.

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Story summary

Researchers from Fudan University and Renmin University of China developed the Brownian SYK-Hubbard model by combining the Sachdev-Ye-Kitaev (SYK) random interactions with Hubbard-type interactions.
The model enables researchers to study how local and non-local effects interact as a transition to a Mott insulating state emerges when interaction strength increases.
The work identifies a breakdown of expected limits on chaotic behavior, indicating new paths for understanding quantum chaos and many-body physics.