title: Fisher-based thermodynamics: its Legendre transform and concavity properties.
abstract: It is shown that the Legendre-transform structure of thermodynamics can be replicated without any change if one replaces the entropy S by Fisher's information measure I. Also, the important thermodynamic property of concavity is shown to be obeyed by I. By this use of the Fisher information measure we develop a thermodynamics that seems to be able to treat equilibrium and nonequilibrium situations in a manner entirely similar to the conventional one.
authors.affiliation: Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA.
authors.forename: B R
authors.initials: BR
authors.lastname: Frieden
authors.forename: A
authors.initials: A
authors.lastname: Plastino
authors.forename: A R
authors.initials: AR
authors.lastname: Plastino
authors.forename: B H
authors.initials: BH
authors.lastname: Soffer