نتایج جستجو برای: weyl heisenberg frame

تعداد نتایج: 119554  

2008
Azita Mayeli

We present a notion of frame multiresolution analysis on the Heisenberg group, abbreviated by FMRA, and study its properties. Using the irreducible representations of this group, we shall define a sinc-type function which is our starting point for obtaining the scaling function. Further, we shall give a concrete example of a wavelet FMRA on the Heisenberg group which is analogous to the Shannon...

Journal: :Theoretical and Mathematical Physics 2022

We describe a family of quantum states the Schr\"odinger cat type as superpositions harmonic oscillator coherent with coefficients defined by quadratic Gauss sums. These emerge eigenfunctions lowering operators obtained after canonical transformations Heisenberg-Weyl algebra associated ordinary and fractional Fourier transformation. The first member this is given well known Yurke-Stoler state.

1993
M. Gasperini

The innationary scenarios suggested by the duality properties of string cosmol-ogy in the Brans-Dicke (or String) frame are shown to correspond to accelerated contraction (deeation) when Weyl-transformed to the Einstein frame. We point out that the basic virtues of innation (solving the atness and horizon problems, amplifying vacuum uctuations) have physically equivalent counterparts in the de-...

Journal: :International Journal of Mathematics 2022

In this paper, we study several weighted norm inequalities for the Opdam–Cherednik transform. We establish different versions of Heisenberg–Pauli–Weyl inequality particular, give an extension using weights with exponents and present a variation that incorporates [Formula: see text]-norms Also, prove version Hardy–Littlewood Finally, other variations such as Nash-type Clarkson-type

2010
NATÁLIA BEBIANO JOÃO DA PROVIDÊNCIA JOÃO P. DA PROVIDÊNCIA

Classes of non-Hermitian operators that have only real eigenvalues are presented. Such operators appear in quantum mechanics and are expressed in terms of the generators of the Weyl-Heisenberg algebra. For each non-Hermitian operator A, a Hermitian involutive operator Ĵ such that A is Ĵ-Hermitian, that is, ĴA = AĴ , is found. Moreover, we construct a positive definite Hermitian Q such that A is...

2008
S. Sivakumar

New quantal states which interpolate between the coherent states of the Heisenberg-Weyl (W3) and SU(1,1) algebras are introduced. The interpolating states are obtained as the coherent states of a closed and symmetric algebra which interpolates between the W3 and SU(1,1) algebras. The overcompleteness of the interpolating coherent states is established. Differential operator representations in s...

2007
Brendan Farrell Thomas Strohmer

Let H be the general, reduced Heisenberg group. Our main result establishes the inverse-closedness of a class of integral operators acting on Lp(H), given by the off-diagonal decay of the kernel. As a consequence of this result, we show that if α1I+Sf , where Sf is the operator given by convolution with f , f ∈ Lv(H), is invertible in B(Lp(H)), then (α1I + Sf )−1 = α2I + Sg, and g ∈ Lv(H). We p...

2008
STEFAN IVANOV

Abstract. A curvature-type tensor invariant called quaternionic contact (qc) conformal curvature is defined on a qc manifolds in terms of the curvature and torsion of the Biquard connection. The discovered tensor is similar to the Weyl conformal curvature in Riemannian geometry and to the Chern-Moser invariant in CR geometry. It is shown that a qc manifold is locally qc conformal to the standar...

Journal: :Science in China Series A-Mathematics (in Chinese) 2008

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