Thermodynamics, Statistical Mechanics and Entropy

Thermodynamics, Statistical Mechanics and Entropy

The proper definition of thermodynamics and the thermodynamic entropy is discussed in the light of recent developments. The postulates for thermodynamics are examined critically, and some modifications are suggested to allow for the inclusion of long-range forces (within a system), inhomogeneous systems with non-extensive entropy, and systems that can have negative temperatures. Only the thermo...

Black hole entropy: statistical mechanics agrees thermodynamics

We discuss the connection between different entropies introduced for black hole. It is demonstrated on the two-dimensional example that the (quantum) thermodynamical entropy of a hole coincides (including UV-finite terms) with its statisticalmechanical entropy calculated according to ’t Hooft and regularized by Pauli-Villars. PACS number(s): 04.60.+n, 12.25.+e, 97.60.Lf, 11.10.Gh ∗ e-mail: serg...

Thermodynamics and Statistical Mechanics

The field of thermodynamics is easiest to understand in the context of Newtonian mechanics. Newtonian mechanics describes the effect of forces on objects. Thermodynamics describes the effect of heat transfer on objects. When heat is transferred,the temperature of an object changes.Temperature and heat are also intimately related to energy. A hot gas in a piston has a high pressure and it can do...

Thermodynamics and Introductory Statistical Mechanics

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Thermodynamics, Statistical Mechanics and Large Deviations