The usual formulation of thermodynamics is based on the additivity of macroscopic systems. However, there are numerous examples of macroscopic systems that are not additive, due to the long-range character of the interaction among the constituents. We present here an approach in which nonadditive systems can be described within a purely thermodynamics formalism. The basic concept is to consider a large ensemble of replicas of the system where the standard formulation of thermodynamics can be naturally applied and the properties of a single system can be consequently inferred. After presenting the approach, we show its implementation in systems where the interaction decays as 1/r^α in the interparticle distance r, with α smaller than the embedding dimension d, and in the Thirring model for gravitational systems.
|Titolo:||Thermodynamics of nonadditive systems|
|Autori:||Latella, I; Pérez-Madrid, A; Campa, A; Casetti, L; Ruffo, S.|
|Rivista:||PHYSICAL REVIEW LETTERS|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||10.1103/PhysRevLett.114.230601|
|Appare nelle tipologie:||1.1 Journal article|