Particle number fluctuations in the microcanonical ensemble
نویسندگان
چکیده
منابع مشابه
On the Equilibrium Fluctuations in a Microcanonical Ensemble
Firstly, we describe fluctuations in the occupation numbers of the energy levels in the microcanonical ensemble using identities that we have derived for the purpose, which allow us to calculate the moments of the occupation numbers. Then we compute analytically the probability distribution of these fluctuations. We show that, for every system of finite N , fluctuations about the equilibrium di...
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with Ei the energy of the microstate labeled by i, β = 1/kBT the inverse temperature (T ), kB Boltzmann’s constant, and ZBG the partition function. The exponential term FBG = exp (−βE) is, of course, called the BG factor. Recently Beck and Cohen [3, 4] have advanced a generalization (called “superstatistics”) of this BG factor, assuming that the inverse temperature β is a stochastic variable. T...
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ژورنال
عنوان ژورنال: Physical Review C
سال: 2005
ISSN: 0556-2813,1089-490X
DOI: 10.1103/physrevc.71.054904