| Full text | |
| Author(s): |
Lima, J. A. S.
;
Deppman, A.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW E; v. 101, n. 4, p. 5-pg., 2020-04-23. |
| Abstract | |
Nonadditive Tsallis q-statistics has successfully been applied for a plethora of systems in natural sciences and other branches of knowledge. Nevertheless, its foundations have been severely criticized by some authors based on the standard additive Boltzmann-Gibbs approach, thereby remaining a quite controversial subject. In order to clarify some polemical concepts, the distribution function for an ideal gas with a finite number of point particles and its q-index are analytically determined. The two-particle correlation function is also derived. The degree of correlation diminishes continuously with the growth of the number of particles. The ideal finite gas system is usually correlated, becomes less correlated when the number of particles grows, and is finally fully uncorrelated when the molecular chaos regime is reached. It is also advocated that both approaches can be confronted through a careful kinetic spectroscopic experiment. The analytical results derived here suggest that Tsallis q-statistics may play a physical role more fundamental than usually discussed in the literature. (AU) | |
| FAPESP's process: | 11/51676-9 - LLAMA: a mm/submm radiotelescope in the Andes, in collaboration with Argentina |
| Grantee: | Jacques Raymond Daniel Lépine |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/17612-7 - Dynamics of many-body systems IV |
| Grantee: | Arnaldo Gammal |
| Support Opportunities: | Research Projects - Thematic Grants |