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The Wigner--Weyl transform on tori and connected graph propagator representations

T. A. Osborn, F. H. Molzahn

Published Dec 1, 1990• 1 citation
OpenAlex

Abstract

Osborn, T.A.; Molzahn, F.H.. (1990). The Wigner--Weyl transform on tori and connected graph propagator representations. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/1541.

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Osborn, T.A.; Molzahn, F.H.. (1990). The Wigner--Weyl transform on tori and connected graph propagator representations. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/1541.
The Fourier–Wigner transform of two functions is first defined and is given an alternative expression. The Wigner transform is then defined to be the Fourier transform of the Fourier–Wigner transform. The Moyal identity, which is an analog of the Plancherel formula, is then proved for the Wigner transform. The Weyl transform with a given symbol is then defined in terms of the Wigner transform. Another formula for the Weyl transform with a given symbol is then proved and used to establish the fact that the product of two Weyl transforms is also a Weyl transform with symbol given by a twisted convolution of the two given symbols.