Fisher information and thermodynamics' 1st. law

Details Fisher information and thermodynamics' 1st. law Fisher information and thermodynamics' 1st. law

2005-09-27

arxiv.org/abs/cond-mat/0509697v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, no figures

Scientific paper

It was recently shown, starting from first principles, that thermodynamics' first law (TFL) can be microscopically obtained without need of invoking the adiabatic theorem (AT) [Physica A, {\bf 356}, 167 (2005)]. We show here that a TFL can also be found for Fisher's information measure, following a similar procedure. Further, it is proved that enforcing the Fisher-first law requirements in a process in which the probability distribution is infinitesimally varied is equivalent to minimizing Fisher's information measure subject to appropriate constraints.

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