943 research outputs found
On the geometry of Siegel-Jacobi domains
We study the holomorphic unitary representations of the Jacobi group based on
Siegel-Jacobi domains. Explicit polynomial orthonormal bases of the Fock spaces
based on the Siegel-Jacobi disk are obtained. The scalar holomorphic discrete
series of the Jacobi group for the Siegel-Jacobi disk is constructed and
polynomial orthonormal bases of the representation spaces are given.Comment: 15 pages, Latex, AMS fonts, paper presented at the the International
Conference "Differential Geometry and Dynamical Systems", August 25-28, 2010,
University Politehnica of Bucharest, Romani
A holomorphic representation of the Jacobi algebra
A representation of the Jacobi algebra by first order differential operators with polynomial
coefficients on the manifold is presented. The
Hilbert space of holomorphic functions on which the holomorphic first order
differential operators with polynomials coefficients act is constructed.Comment: 34 pages, corrected typos in accord with the printed version and the
Errata in Rev. Math. Phys. Vol. 24, No. 10 (2012) 1292001 (2 pages) DOI:
10.1142/S0129055X12920018, references update
A convenient coordinatization of Siegel-Jacobi domains
We determine the homogeneous K\"ahler diffeomorphism which expresses the
K\"ahler two-form on the Siegel-Jacobi ball \mc{D}^J_n=\C^n\times \mc{D}_n as
the sum of the K\"ahler two-form on \C^n and the one on the Siegel ball
\mc{D}_n. The classical motion and quantum evolution on \mc{D}^J_n
determined by a hermitian linear Hamiltonian in the generators of the Jacobi
group G^J_n=H_n\rtimes\text{Sp}(n,\R)_{\C} are described by a matrix Riccati
equation on \mc{D}_n and a linear first order differential equation in
z\in\C^n, with coefficients depending also on W\in\mc{D}_n. denotes
the -dimensional Heisenberg group. The system of linear differential
equations attached to the matrix Riccati equation is a linear Hamiltonian
system on \mc{D}_n. When the transform is
applied, the first order differential equation in the variable
\eta=(\un-W\bar{W})^{-1}(z+W\bar{z})\in\C^n becomes decoupled from the motion
on the Siegel ball. Similar considerations are presented for the Siegel-Jacobi
upper half plane \mc{X}^J_n=\C^n\times\mc{X}_n, where \mc{X}_n denotes the
Siegel upper half plane.Comment: 32 pages, corrected typos, Latex, amsart, AMS font
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