An Attempt to Derive the Expression of the Constant in the Thermodynamic Uncertainty Relations by a Statistical Model for a Quasi-Ideal Nano-Gas

TL;DR

This paper investigates the physical nature of a constant in thermodynamic uncertainty relations using a statistical model for nano-gases, suggesting it is a minimum value rather than a new fundamental constant.

Contribution

It derives an expression for the constant in thermodynamic uncertainty relations from a simple nano-gas model, linking it to a minimum value rather than a fundamental constant.

Findings

The theoretical value closely matches experimental data.

The constant beta is identified as a minimum value, not a new fundamental constant.

The model provides insight into the physical interpretation of the constant.

Abstract

In recent work, we have shown that fundamental quantities such as the total entropy production, the thermodynamic variables conjugate to the thermodynamic forces, and the Glansdorff-Prigogine's dissipative variable may be discretized at the mesoscopic scale. The Canonical Commutation Rules (CCRs) valid at the mesoscopic scale have been postulated and the measurement process consists of determining the eigenvalues of the operators associated with the thermodynamic quantities. The essence of that work was to analyze the consequences of these postulates. This letter aims to understand the physical nature of the new constant (beta) introduced in the CCRs. In particular, two questions are still open. Is beta a new fundamental constant? Does the constant in the CCRs correspond to the lowest limit? We shall tackle the problem starting from the simplest assumption: the expression of beta can be derived from a simple model (a heuristic model) for nano-gas and studied through the tools of classical statistical physics. We will find that the theoretical value is very close to the experimental one. We shall not go further in our interpretation; we shall limit ourselves simply by noticing that according to our model, the constant beta does not appear to be a new fundamental constant but corresponds to the minimum value.