paper

Algebras of distributions suitable for phase-space quantum mechanics. II. Topologies on the Moyal algebra

arXiv:2601.09934 · doi:10.1063/1.527984

Abstract

The topology of the Moyal -algebra may be defined in three ways: the algebra may be regarded as an operator algebra over the space of smooth declining functions either on the configuration space or on the phase space itself; or one may construct the -algebra via a filtration of Hilbert spaces (or other Banach spaces) of distributions. We prove the equivalence of the three topologies thereby obtained. As a consequence, by filtrating the space of tempered distributions by Banach subspaces, we give new sufficient conditions for a phase-space function to correspond to a trace-class operator via the Weyl correspondence rule.

Latex, 15 pages. Placed here for archival purposes

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