Abstract
The relevance of non-regular representations of the Heisenberg group (or of the Weyl C ∗-algebra \(\mathcal{A}_{W}\)) raises the question of a possible classification of them, which generalizes Stone-von Neumann (SvN) theorem. For this purpose, a possible strategy is to consider a maximal abelian \(\mathcal{A}\) subalgebra of \(\mathcal{A}_{W}\), identify its Gelfand spectrum \(\Sigma (\mathcal{A})\) and classify the realizations of such an abelian algebra in terms of multiplication operators on \(L^{2}(\Sigma (\mathcal{A}),d\mu )\), with d μ a (Borel) measure on \(\Sigma (\mathcal{A})\).
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Notes
- 1.
J. Löffelholz, G. Morchio and F. Strocchi, Lett. Math. Phys. 35, 251 (1995).
- 2.
The detailed argument is given in S. Cavallaro, Ph. D Thesis, academic year 1996/97, ISAS, Trieste, Chapter V, Sect. 3.
- 3.
S. Cavallaro, Algebras and Representation Theory, 3, 175 (2000).
- 4.
E. Hille and R.S. Phillips, Functional Analysis and Semigroups, Amer. Math. Soc. Colloq. Pub. Vol. 31, New York 1948, Theors. 3.5.3, 3.5.5.
- 5.
S. Cavallaro, G. Morchio and F. Strocchi, Lett, Math. Phys. 47, 307 (1999). At the moment, we cannot offer a simpler version of the rather technical proof presented there.
- 6.
G. Mackey, Duke Math. J. 16, 313 (1949).
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Strocchi, F. (2016). ∗ A Generalization of the Stone-von Neumann Theorem. In: Gauge Invariance and Weyl-polymer Quantization. Lecture Notes in Physics, vol 904. Springer, Cham. https://doi.org/10.1007/978-3-319-17695-6_6
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