On the equivalence between stochastic baker's maps and two-dimensional spin systems

Details On the equivalence between stochastic baker's maps and two-dimensional spin systems On the equivalence between stochastic baker's maps and two-dimensional spin systems

2009-09-25

arxiv.org/abs/0909.4687v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

We show that there is a class of stochastic baker's transformations that is equivalent to the class of equilibrium solutions of two-dimensional spin systems with finite interaction. The construction is such that the equilibrium distribution of the spin lattice is identical to the invariant measure in the corresponding baker's transformation. We also find that the entropy of the spin system is up to a constant equal to the rate of entropy production in the corresponding stochastic baker's transformation. We illustrate the equivalence by deriving two stochastic baker's maps representing the Ising model at a temperature above and below the critical temperature, respectively. We calculate the invariant measure of the stochastic baker's transformation numerically. The equivalence is demonstrated by finding that the free energy in the baker system is in agreement with analytic results of the two-dimensional Ising model.

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