Quantum experiments have simulated time reversal symmetry breaking but cannot reverse macroscopic entropy.
Quantum experiments and theoretical frameworks confirm that time-reversal symmetry can be broken at microscopic or effective levels, yet macroscopic thermodynamic irreversibility and entropy production remain unidirectional.
The claim addresses two distinct yet related aspects of quantum thermodynamics: the simulation/realization of time-reversal symmetry breaking in quantum mechanics, and the persistence of macroscopic entropy (the thermodynamic arrow of time). Papers [0], [1], and [5] directly support this by demonstrating how time-reversal symmetry is broken in open quantum systems or effective dynamics while maintaining the fundamental principles of entropy increase and irreversibility. No provided papers refute the assertion that macroscopic entropy cannot be reversed.
Juliette Monsel, Cyril Elouard, Alexia Auffèves. An autonomous quantum machine to measure the thermodynamic arrow of time. 2018. https://doi.org/10.1038/s41534-018-0109-8
Demonstrates the measurement of stochastic entropy production and verification of fluctuation theorems in quantum open systems, highlighting the unidirectional nature of thermodynamic evolution.
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Naomichi Hatano, Gonzalo Ordonez. Time-Reversal Symmetry and Arrow of Time in Quantum Mechanics of Open Systems. 2019. https://doi.org/10.3390/e21040380
Derives time-reversal symmetry breaking in open quantum systems from underlying time-symmetric equations, explaining the microscopic emergence of the thermodynamic arrow of time.
Zaino M. Paper II UV Completion via Kaluza–Klein Compactification and String-Theoretic Embedding. 2026. https://doi.org/10.14293/pr2199.003298.v1
Establishes a foundational link showing that while underlying microscopic quantum dynamics remain time-reversal invariant, effective macroscopic projection yields irreversible entropy production.
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