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Challenges in Thermodynamics: Irreversible Processes, Nonextensive Entropies, And Systems Without Equilibrium States (Report)

Pure and Applied Chemistry 2009, Oct, 81, 10

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OPENING REMARKS Irreversible pathways connecting two equilibrium states are not well understood. Even less is known about general rules which govern systems far from equilibrium. In this mini-review, I have made a choice of some problems which, in my opinion, define challenges facing our community of thermo dynamics and statistical mechanics. Among them I will present the Jarzynski equation, discovered in 1997, which relates works done in irreversible processes to the free energy difference [1-5]. Furthermore, I will describe recent findings concerning dynamic pathways governing evaporation and condensation [6-19] and mention late stages of a process of phase separation [20]. I will also discuss systems that are nonextensive and therefore cannot be described by the Boltzmann-Gibbs-Shannon (BGS) entropy. In its place, new paradigms are introduced such as Renyi or Tsallis entropies [21-26]. Finally, I will briefly touch on the problem of systems, such as living matter, which by definition do not have equilibrium states. We cannot use, in their context, a paradigm of isolated system or equilibrium state or even a notion of subsystem. Most certainly, new descriptions and new paradigms are needed to properly describe such systems.

Challenges in Thermodynamics: Irreversible Processes, Nonextensive Entropies, And Systems Without Equilibrium States (Report)
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  • 2,99 €
  • Available on iPhone, iPad, iPod touch, and Mac.
  • Category: Chemistry
  • Published: 01 October 2009
  • Publisher: International Union of Pure and Applied Chemistry
  • Print Length: 19 Pages
  • Language: English
  • Requirements: To view this book, you must have an iOS device with iBooks 1.3.1 or later and iOS 4.3.3 or later, or a Mac with iBooks 1.0 or later and OS X 10.9 or later.

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