The mathematical structure of quantum real numbers

TL;DR

This paper explores the mathematical structure of quantum real numbers using sheaf theory, $O^{*}$ algebras, and state spaces, providing a framework for understanding physical qualities in quantum systems.

Contribution

It introduces a sheaf of Dedekind real numbers for quantum systems and models physical qualities with $O^{*}$ algebras acting on Hilbert spaces, linking abstract math to quantum physics.

Findings

Defines the sheaf of Dedekind real numbers for quantum systems

Models physical qualities via $O^{*}$ algebra representations

Provides an example for a single Galilean relativistic particle

Abstract

The mathematical structure of the sheaf of Dedekind real numbers $\RsubD(X)$ for a quantum system is discussed. The algebra of physical qualities is represented by an $O^{*}$ algebra $\mathcal M$ that acts on a Hilbert space that carries an irreducible representation of the symmetry group of the system. $X =\EsubS(\mathcal M)$, the state space for $\mathcal M$, has the weak topology generated by the functions $ a_{Q}(\cdot)$, defined for $\hat A \in \mathcal M_{sa} $ and $\forall \hat \rho \in \EsubS(\mathcal M) $, by $ a_{Q}(\hat \rho) = Tr \hat A \hat \rho $. For any open subset $W$ of $\EsubS(\mathcal M)$, the function $ a_{Q}|_{W}$ is the numerical value of the quality $\hat A$ defined to the extent $W$. The example of the quantum real numbers for a single Galilean relativistic particle is given.