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Condensed Matter > Statistical Mechanics
Title: A many-body Szilard engine with giant number fluctuations
(Submitted on 20 Nov 2022 (v1), last revised 21 Aug 2023 (this version, v2))
Abstract: Szil\'ard's information engine is a canonical example in the field of thermodynamics of information. We realize experimentally a macroscopic many-particle Szil\'ard engine that consists of active particles and use it to lift a mass against gravity. We show that the extractable work per cycle increases when the raised weight is changed more gradually during the process. Interestingly, we find that the ideal extractable work grows with the number of particles due to giant number fluctuations. This is in contrast to the calculated behavior of a similar engine operating on thermal particles.
Submission history
From: Yael Roichman [view email][v1] Sun, 20 Nov 2022 12:03:22 GMT (227kb,D)
[v2] Mon, 21 Aug 2023 06:55:50 GMT (172kb,D)
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