TY - JOUR A1 - Gosson, Maurice A. de T1 - Extended Weyl calculus and application to the phase-space Schrodinger equation N2 - We show that the Schrodinger equation in phase space proposed by Torres-Vega and Frederick is canonical in the sense that it is a natural consequence of the extended Weyl calculus obtained by letting the Heisenberg group act on functions (or half-densities) defined on phase space. This allows us, in passing, to solve rigorously the TF equation for all quadratic Hamiltonians Y1 - 2005 ER - TY - BOOK A1 - Gosson, Maurice A. de T1 - On the weyl representation of metapletic operators T3 - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell Y1 - 2005 SN - 1437-739X PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Gosson, Maurice A. de T1 - Extended weyl calculus and application to the phase-space scrödinger equation T3 - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell Y1 - 2005 SN - 1437-739X PB - Univ. CY - Potsdam ER - TY - JOUR A1 - Gosson, Maurice A. de T1 - On the Weyl representation of metaplectic operators N2 - We study the Weyl representation of metaplectic operators associated to a symplectic matrix having no non- trivial fixed point, and justify a formula suggested in earlier work of Mehlig and Wilkinson. We give precise calculations of the associated Maslov-type indices; these indices intervene in a crucial way in Gutzwiller's formula of semiclassical mechanics, and are simply related to an index defined by Conley and Zehnder Y1 - 2005 ER - TY - JOUR A1 - Gosson, Maurice A. de T1 - Symplectically covariant Schrodinger equation in phase space N2 - A classical theorem of Stone and von Neumann states that the Schrodinger representation is, up to unitary equivalences, the only irreducible representation of the Heisenberg group on the Hilbert space of square-integrable functions on configuration space. Using the Wigner-Moyal transform, we construct an irreducible representation of the Heisenberg group on a certain Hilbert space of square-integrable functions defined on phase space. This allows us to extend the usual Weyl calculus into a phase-space calculus and leads us to a quantum mechanics in phase space, equivalent to standard quantum mechanics. We also briefly discuss the extension of metaplectic operators to phase space and the probabilistic interpretation of the solutions of the phase-space Schrodinger equation Y1 - 2005 ER - TY - INPR A1 - Gosson, Maurice A. de T1 - On the Weyl representation of metaplectic operators N2 - We study the Weyl representation of metaplectic operators associated to a symplectic matrix having no non-trivial fixed point, and justify a formula suggested in earlier work of Mehlig and Wilkinson. We give precise calculations of the associated Maslov-type indices; these indices intervene in a crucial way in Gutzwiller’s formula of semiclassical mechanics, and are simply related to an index defined by Conley and Zehnder. T3 - Preprint - (2005) 10 KW - Weyl symbol KW - metaplectic operators KW - Maslov and Conley–Zehnder index KW - Gutzwiller formula Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-29865 ER - TY - INPR A1 - Gosson, Maurice A. de T1 - Extended Weyl calculus and application to the phase-space Schrödinger equation N2 - We show that the Schr¨odinger equation in phase space proposed by Torres-Vega and Frederick is canonical in the sense that it is a natural consequence of the extendedWeyl calculus obtained by letting the Heisenberg group act on functions (or half-densities) defined on phase space. This allows us, in passing, to solve rigorously the TF equation for all quadratic Hamiltonians. T3 - Preprint - (2005) 11 Y1 - 2005 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-29879 ER - TY - BOOK A1 - Gosson, Maurice A. de T1 - Symplectic geometry, wigner-weyl-moyal calculus, and quantum mechanics, in phase space ; Part 1 T3 - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell Y1 - 2006 SN - 1437-739X PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Gosson, Maurice A. de T1 - Symplectic geometry, wigner-weyl-moyal calculus, and quantum mechanics, in phase space ; Part 2 T3 - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell Y1 - 2006 SN - 1437-739X PB - Univ. CY - Potsdam ER - TY - BOOK A1 - Gosson, Maurice A. de T1 - Symplectic geometry, wigner-weyl-moyal calculus, and quantum mechanics, in phase space ; Part 3 T3 - Preprint / Universität Potsdam, Institut für Mathematik, Arbeitsgruppe Partiell Y1 - 2006 SN - 1437-739X PB - Univ. CY - Potsdam ER -