Daemons in computing, generally processes that run on servers to respond to. The existence of maxwell s demon is a direct threat to the second law of thermodynamics. It is shown that the entropy of the demon increases during the expansion step, due to the decoupling of the molecule from the measurement information. The demon is a computer program running on a pc and the camera. Famously, early in the twentieth century leo szilard modeled the effect this demon plays in measurements on a heat engine and introduced the concept of an information bit. Discarding it leads to immediate increase in entropy but the demon cannot store. Entropy, classical and quantum information, computing. Maxwells demon and the entropy cost of information. More recently, lubkin and fahn have analyzed szilards engine. Entropy, information, computing in 1990, maxwell s demon has been the subject of renewed and increased interest by numerous researchers in the fields mentioned above. The lack of information about the system corresponds to the entropy.
Buy maxwells demon, entropy, information, computing on. We present an analysis of szilards onemolecule maxwell s demon, including a detailed entropy accounting, that suggests a general theory of the entropy cost of information. In the thought experiment, a demon controls a small door between two chambers of gas. Erasing information is a thermodynamically irreversible process that.
Entropy, information, computing makes the key literature easily available and helps with the crossfertilisation of ideas in different disciplines. An annotated chronological bibliography provides a colourful perspective on maxwell s demon and a rich trail of citations for further study. Pdf maxwells demon and the second law of thermodynamics. Entropy, classical and quantum information, computing find, read and cite all the research you need on researchgate. Entropy, classical and quantum information, computing paperback dec. As individual gas molecules approach the door, the demon quickly opens and shuts the door so that only fast molecules are.
Entropy, classical and quantum information, computing, is an updated and expanded version of the original. It is also shown that there is an entropy symmetry between the. After more than 120 years of uncertain life and at least two pronouncements of death, this fanciful character seems more vibrant than ever. In this paper, we will underline the flaw that exists in maxwell s demon paradox using chemical. Entropy, information, computing princeton series in physics on. As the dictionary entry above shows, maxwells demon is no more than a simple idea. Maxwells demon is a thought experiment created by the physicist james clerk maxwell in. The demon conceived by james clerk maxwell has bedeviled the theories of thermodynamics and measurement for over one hundred and thirty years. Maxwell s demon is a thought experiment created by the physicist james clerk maxwell in 1867 in which he suggested how the second law of thermodynamics might hypothetically be violated. Maxwells demon, nonequilibrium physics, brownian motion, jarzynski.
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