Resolvent algebra in Fock-Bargmann representation

preprint2022arXivOpen access

Abstract

The resolvent algebra R(X,σ)\mathcal{R}(X, σ) associated to a symplectic space (X,σ)(X, σ) was introduced by D. Buchholz and H. Grundling as a convenient model of the canonical commutation relation (CCR) in quantum mechanics. We first study a representation of R(Cn,σ)\mathcal{R}(\mathbb{C}^n, σ) with the standard symplectic form σσ inside the full Toeplitz algebra over the Fock-Bargmann space. We prove that R(Cn,σ)\mathcal{R}(\mathbb{C}^n, σ) itself is a Toeplitz algebra. In the sense of R. Werner's correspondence theory we determine its corresponding shift-invariant and closed space of symbols. Finally, we discuss a representation of the resolvent algebra R(H,σ~)\mathcal{R}(\mathcal{H}, \tildeσ) for an infinite dimensional symplectic separable Hilbert space (H,σ~)(\mathcal{H}, \tildeσ). More precisely, we find a representation of R(H,σ~)\mathcal{R}(\mathcal{H}, \tildeσ) inside the full Toeplitz algebra over the Fock-Bargmann space in infinitely many variables.

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