Energetic Cost of Statistical Order-Degree Change in a Fermions’ Set

We discuss novel many-fermions thermodynamics’ features. They refer to the energy cost associated to order-disorder changes. Our thermal quantum statistical scenario is controlled by suitable fermion-fermion interactions. We deal with two well-known quantum interactions that operate within an exactl...

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Bibliographic Details
Published in:Entropy
Main Authors: Flavia Pennini, Angelo Plastino, Gustavo Luis Ferri, Angel Ricardo Plastino
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Subjects:
statistical mechanics’ quantifiers
order-disorder disjunction
fermions
Online Access:https://www.mdpi.com/1099-4300/24/6/752
Description
Summary:We discuss novel many-fermions thermodynamics’ features. They refer to the energy cost associated to order-disorder changes. Our thermal quantum statistical scenario is controlled by suitable fermion-fermion interactions. We deal with two well-known quantum interactions that operate within an exactly solvable model. This model is able to adequately describe some aspects of fermion-dynamics, particularly level-crossings. We describe things via employment of Gibbs’ canonical ensemble strictures. We show that judicious manipulation of the energy cost associated to statistical order (disorder) variations generates useful information-quantifiers. The underlying idea is that changes in the degree of order are intimately linked to level-crossings energetic costs.
ISSN:1099-4300

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