Abstract: We consider the Finsler structure and contact structure in variational principle of equilibrium thermodynamic theory. Einstein's statistical thermodynamic theory was proposed as a statistical mechanics using macroscopic thermodynamic variables as stochastic variables. We generalise Einstein's statistical theory from Finsler geometrical viewpoint, and operating inverse process of variation, path integration, we propose a new statistical theory. Einstein's theory becomes the WKB approximation of our new theory.
Classification (MSC2000): 53B40
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