2003/01/31 by Ramandeep S. Johal · 1 citation
Economics, Econometrics and Finance · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Complex Systems and Time Series Analysis #Statistical Mechanics and Entropy #cond-mat.stat-mech
paper · pdf · doi:10.1016/s0375-9601(03)01055-7
Latex, 12 pages, discussion modified, accepted for Phys. Lett. A
arxiv created 2003/06/27 · openalex publication_date 2003/08/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We consider the meta-equilibrium state of a composite system made up of independent subsystems satisfying the additive form of external constraints, as recently discussed by Abe [Phys. Rev. E \bf 63, 061105 (2001)]. We derive the additive entropy S underlying a composable entropy S by identifying the common intensive variable. The simplest form of composable entropy satisfies Tsallis-type nonadditivity and the most general composable form is interpreted as a monotonically increasing funtion H of this simplest form. This is consistent with the observation that the meta-equilibrium can be equivalently described by the maximum of either H[S] or S and the intensive variable is same in both cases.