Non-particle statistical physics
A. Jakovac
TL;DR
This paper develops a statistical physics framework for systems with composite elementary excitations, providing explicit calculations for energy density and degrees of freedom, and discusses implications related to the Gibbs paradox.
Contribution
It introduces a calculational scheme for thermodynamic quantities in systems with composite excitations, addressing non-linear quasiparticle contributions.
Findings
Single quasiparticle contributions combine non-linearly in thermodynamic quantities.
Explicit scheme for energy density and degrees of freedom based on spectral functions.
Discussion of the relation to the Gibbs paradox.
Abstract
Consistent statistical physical description is given for systems where the elementary excitations are composite objects. Explicit calculational scheme is constructed for the energy density and the total number of thermodynamical degrees of freedom, based on the spectral function of the system. One demonstrates through characteristic examples that single quasiparticle contributions combine non-linearly in these quantities. Relation to the Gibbs paradox is also discussed.
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Taxonomy
TopicsQuantum Mechanics and Applications · Quantum Information and Cryptography · Statistical Mechanics and Entropy