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Grand-canonical Thermodynamic Formalism via IFS: volume, temperature, gas pressure and grand-canonical topological pressure by Lopes, A. O.; Oliveira, E. R.; Pedra, W. de S.; Vargas, V. is a scholarly article available to read on EtoBox.

What is Grand-canonical Thermodynamic Formalism via IFS: volume, temperature, gas pressure and grand-canonical topological pressure about?

We consider here a dynamic model for a gas in which a variable number of particles $N \in \mathbb{N}_0 := \mathbb{N} \cup \{0\}$ can be located at a site. This point of view leads us to the grand-canonical framework and the need for a chemical potential. The dynamics is played by the shift acting on the set of sequences $\Omega := \mathcal{A}^\mathbb{N}$, where the alphabet is $\mathcal{A} := \{1,2,...,r\}$. Introducing new variables like the number of particles $N$ and the chemical potential $\mu$, we adapt the concept of grand-canonical partition sum of thermodynamics of gases to a symbolic dynamical setting considering a Lipschitz family of potentials $% (A_N)_{N \in \mathbb{N}_0}$, $A_N:\Omega \to \mathbb{R}$. Our main results will be obtained from adapting well-known properties of the Thermodynamic Formalism for IFS with weights to our setting. In this direction, we introduce the grand-canonical-Ruelle operator: $\mathcal{L}_{\beta, \mu}(f)=g$, when, $\beta>0,\mu<0,$ and \medskip $\,\,\,\,\,\,\,\,\,\,\,\,\,\,g(x)= \mathcal{L}_{\beta, \mu}(f) (x) =\sum_{N \in \mathbb{N}_0} e^{\beta \, \mu\, N }\, \sum_{j \in \mathcal{A}} e^{- \,\beta\, A_N(jx)} f(jx). $ \medskip We show the exi

Author

Lopes, A. O.; Oliveira, E. R.; Pedra, W. de S.; Vargas, V.

Published

2023

Language

EN