English

Is the Tsallis entropy stable?

Statistical Mechanics 2010-04-27 v1

Abstract

The question of whether the Tsallis entropy is Lesche-stable is revisited. It is argued that when physical averages are computed with the escort probabilities, the correct application of the concept of Lesche-stability requires use of the escort probabilities. As a consequence, as shown here, the Tsallis entropy is unstable but the thermodynamic averages are stable. We further show that Lesche stability as well as thermodynamic stability can be obtained if the homogeneous entropy is used as the basis of the formulation of non-extensive thermodynamics. In this approach, the escort distribution arises naturally as a secondary structure.

Keywords

Cite

@article{arxiv.0902.4579,
  title  = {Is the Tsallis entropy stable?},
  author = {James F. Lutsko and Jean Pierre Boon and Patrick Grosfils},
  journal= {arXiv preprint arXiv:0902.4579},
  year   = {2010}
}

Comments

6 pages

R2 v1 2026-06-21T12:15:53.974Z