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- W4310996950 abstract "The world around us distinctly possesses an arrow of time. Classical thermodynamics provides an arrow of time in the form of the second law of thermodynamics which has a beautiful statistical interpretation. But a clear picture of the quantum origin of the arrow of time has been lacking so far. Here we show that an arrow of time arises in quantum chaotic systems. We show that, for an isolated quantum system which is also chaotic, the change in entropy is non-negative when the system is generically perturbed. Physical systems are, in general, highly interacting and are good examples of chaotic systems. We show our result by keeping track of the change in energy when the system is perturbed. Using an extremely fine-tuned perturbation, we can still lower the entropy. But fine-tuning the perturbation requires measurement of highly precise energy levels of the system. This is reminiscent of the Maxwell's demon problem in classical thermodynamics and its subsequent resolution." @default.
- W4310996950 created "2022-12-22" @default.
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- W4310996950 date "2022-12-07" @default.
- W4310996950 modified "2023-09-27" @default.
- W4310996950 title "Quantum chaos and the arrow of time" @default.
- W4310996950 doi "https://doi.org/10.48550/arxiv.2212.03914" @default.
- W4310996950 hasPublicationYear "2022" @default.
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