Transition probability, fluctuation theorem

This result says in essence that the probability of a positive increase in entropy is exponentially greater than the probability of a decrease in entropy during mechanical work. This is in essence the fluctuation theorem that was first derived by Bochkov and Kuzovlev [58-60] and later by Evans et al. [56, 57]. A derivation has also been given by Crooks [61, 62], and the theorem has been verified experimentally [63]. The present derivation is based on the author s microscopic transition probability [4]. 

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