Entropy meters and the entropy of non-extensive systems

Autor(en)

Elliott H. Lieb, Jakob Yngvason

Abstrakt

In our derivation of the second law of thermodynamics from the relation of adiabatic accessibility of equilibrium states, we stressed the importance of being able to scale a system's size without changing its intrinsic properties. This leaves open the question of defining the entropy of macroscopic, but unscalable systems, such as gravitating bodies or systems where surface effects are important. We show here how the problem can be overcome, in principle, with the aid of an ‘entropy meter’. An entropy meter can also be used to determine entropy functions for non-equilibrium states and mesoscopic systems.

Organisation(en)

Mathematische Physik, Forschungsplattform Internationales Erwin Schrödinger Institut für Mathematik und Physik

Externe Organisation(en)

Princeton University

Journal

Proceedings of the Royal Society of London A: Mathematical, Physical and Engineering Sciences

Band

470

Anzahl der Seiten

9

ISSN

1364-5021

DOI

https://doi.org/10.1098/rspa.2014.0192

Publikationsdatum

07-2014

Peer-reviewed

Ja

ÖFOS 2012

103019 Mathematische Physik

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/0fd48037-8f3d-44ac-af99-784f3f1f8df6