The simplified Wheeler-Dewitt equation : the Cauchy problem and some spectral properties
João-Paulo Dias, Mário Figueira (1991)
Annales de l'I.H.P. Physique théorique
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João-Paulo Dias, Mário Figueira (1991)
Annales de l'I.H.P. Physique théorique
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P. De Mottoni, E. Salusti (1973)
Annales de l'I.H.P. Physique théorique
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J.-P. Dias, M. Figueira (1993)
Annales de l'I.H.P. Analyse non linéaire
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Giuseppe Gaeta (1999)
Annales de l'I.H.P. Physique théorique
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Demetra Demetropoulou-Psomopoulou (1997)
Publicacions Matemàtiques
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The present work is based on a type of structures on a differential manifold V, called G-structures of the second kind, defined by endomorphism J on the second order tangent bundle T(V ). Our objective is to give conditions for a differential manifold to admit a real almost product and a generalised almost tangent structure of second order. The concepts of the second order frame bundle H(V ), its structural group L and its associated tangent bundle of second order T(V ) of a differentiable...
Joachim Hilgert (1989)
Annales de l'institut Fourier
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Analytic extensions of the metaplectic representation by integral operators of Gaussian type have been calculated in the and the Bargmann-Fock realisations by Howe [How2] and Brunet-Kramer [Brunet-Kramer, Reports on Math. Phys., 17 (1980), 205-215]], respectively. In this paper we show that the resulting semigroups of operators are isomorphic and calculate the intertwining operator.