Phase Space Portraits of an Unresolved Gravitational Maxwell Demon
作者： D. P. Sheehan , J. Glick , T. Duncan , J. A. Langton , M. J. Gagliardi
关键词: Gravitation 、 Entropy (arrow of time) 、 Second law of thermodynamics 、 Classical mechanics 、 Quantum mechanics 、 Phase space 、 Physics 、 Demon 、 Maxwell's demon 、 Maxwell relations 、 Non-equilibrium thermodynamics
摘要: In 1885, during initial discussions of J. C. Maxwell's celebrated thermodynamic demon, Whiting(1) observed that the demon-like velocity selection molecules can occur in a gravitationally bound gas. Recently, gravitational Maxwell demon has been proposed which makes use this observation [D. P. Sheehan, Glick, and D. Means, Found. Phys. 30, 1227 (2000)]. Here we report on numerical simulations detail its microscopic phase space structure. Results verify previously hypothesized mechanism paradoxical behavior. This system appears to be only example fully classical mechanical not resolved favor second law thermodynamics.
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