An introduction to the macroscopic fluctuation theory
The macroscopic fluctuation theory provides a general description, based on the probability of large fluctuation, of non-equilibrium
stationary states arising from stochastic lattice gases.
I will review the basis principles of this theory and illustrate in detail the two following general features:
- The presence of long range correlations of the density as a consequence of the non locality of the rate function
- The occurrence of phase transitions in the (large) fluctuations of the total current.
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