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This is a Quantitative Study study.

October 12, 2025Open Access

Path integral approach to quantum thermalization

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Theoretical approach describes quantum system dynamics and thermalization, suggesting advancements over traditional methods.

The theory describes the irreversible dynamics of quantum systems acting as their own environment, revealing insights into thermalization.
Using the spectral form factor as a test observable, the approach shows strong correlation results and agreement with numerical simulations.
The comprehensive framework combines aspects of quantum many-body theory with path integration to address thermalization across various models.
Illustrative case studies include coupled quantum circuits and capacitively coupled quantum dots, demonstrating practical applications of the theory.

Altland et al. (2025) studied this question.

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