Geometrical aspects and connections of the energy-temperature fluctuation relation

Details Geometrical aspects and connections of the energy-temperature fluctuation relation Geometrical aspects and connections of the energy-temperature fluctuation relation

2009-10-15

arxiv.org/abs/0910.2864v1

J. Phys. A: Math and Theo. 42, 335003 2009

Physics

Condensed Matter

Statistical Mechanics

Version accepted for publication in J. Phys. A: Math and Theo

Scientific paper

10.1088/1751-8113/42/33/335003

Recently, we have derived a generalization of the known canonical fluctuation relation $k_{B}C=\beta^{2}< \delta U^{2} >$ between heat capacity $C$ and energy fluctuations, which can account for the existence of macrostates with negative heat capacities $C<0$. In this work, we presented a panoramic overview of direct implications and connections of this fluctuation theorem with other developments of statistical mechanics, such as the extension of canonical Monte Carlo methods, the geometric formulations of fluctuation theory and the relevance of a geometric extension of the Gibbs canonical ensemble that has been recently proposed in the literature.

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