An Analytic Characterization of p , q -White Noise Functionals (original) (raw)

2020, Journal of Mathematics

In this paper, a characterization theorem for the S -transform of infinite dimensional distributions of noncommutative white noise corresponding to the p , q -deformed quantum oscillator algebra is investigated. We derive a unitary operator U between the noncommutative L 2 -space and the p , q -Fock space which serves to give the construction of a white noise Gel’fand triple. Next, a general characterization theorem is proven for the space of p , q -Gaussian white noise distributions in terms of new spaces of p , q -entire functions with certain growth rates determined by Young functions and a suitable p , q -exponential map.

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Quantum White Noise Stochastic Analysis Based on Nuclear Algebras of Entire Functions

Bulletin of the Malaysian Mathematical Sciences Society, 2020

In this paper, we introduce a space of θ-admissible distributions denoted by A * θ as well as the notion of θ-admissible operators. We study the regularity properties of the classical conditional expectation acting on A * θ and acting on L(A θ , A * θ) which is the space of linear continuous operators from A θ into A * θ. An integral representation with respect to the coordinate system of the quantum white noise (QWN) derivatives and their adjoints {D ± t , D ± * t , t ∈ R} of such conditional expectation is given. Then, we give a quantum white noise counterpart of the Clark formula. Finally, we introduce the QWN Hitsuda-Skorokhod integrals. Such integrals are shown to be QWN martingales using a new notion of QWN conditional expectation. Keywords Quantum white noise stochastic process • QWN derivatives • QWN Hitsuda-Skorokhod integral • QWN martingale Mathematics Subject Classification 81S25 • 60H40 • 46A32 • 46G20 • 46F25 Communicated by Keong Lee.

Characterization Theorems for the Quantum White Noise Gross Laplacian and Applications

Complex Analysis and Operator Theory, 2018

This paper reports on the characterization of the quantum white noise (QWN) Gross Laplacian based on nuclear algebra of white noise operators acting on spaces of entire functions with θ-exponential growth of minimal type. First, we use extended techniques of rotation invariance operators, the commutation relations with respect to the QWN-derivatives and the QWN-conservation operator. Second, we employ the new concept of QWN-convolution operators. As application, we study and characterize the powers of the QWN-Gross Laplacian. As for their associated Cauchy problem it is solved using a QWN-convolution and Wick calculus.

Operator theory: quantum white noise approach

Quantum Studies: Mathematics and Foundations, 2015

we develop an operator theory on a nuclear algebra of white noise operators in terms of the quantum white noise (QWN) derivatives and their dual adjoints. Using an adequate definition of a QWN-symbol transformation, we discuss QWN-integral-sum kernel operators which give the Fock expansion of the QWN-operators (i.e. the linear operators acting on nuclear algebra of white noise operators). As application, we characterize all rotation invariant QWN-operators by means of the QWN-conservation operator, the QWN-Gross Laplacians. These topics are expected to open a new area in QWN infinite-dimensional analysis.

On the structure of non-commutative white noises

Transactions of the American Mathematical Society, 2007

We consider the concepts of continuous Bernoulli systems and non-commutative white noises. We address the question of isomorphism of continuous Bernoulli systems and show that for large classes of quantum Levy processes one can make quite precise statements about the time behaviour of their moments.

Commutators Associated With The Renormalized Powers of Quantum White Noise

Let δ(t) denote the Dirac delta function. We show how, when the renormalization constant c > 0 in δ 2 (t) = c δ(t) is large or approaches +∞, the commutation relations for the Renormalized Powers of Quantum White Noise (RPQWN) can be truncated to yield either the Heisenberg Canonical Commutation Relations (CCR) or the Renormalized Square of White Noise (RSWN) commutation relations of , parametrized by the order of the white noise functionals. The, still open, problem of choosing a renormalization of the powers of the delta function that will lead to a Fock representation of the RPQWN commutation relations is described.

Gaussian and Poisson white noises with related characterization theorems

Contemporary Mathematics, 2003

Let µ G and µ P be a Gaussian measure and a Poisson measure on E * , respectively. Let at and a * t be respectively annihilation and creation operators at a point t ∈ R. In the theory of quantum white noise, it is known that at is a continuous linear operator from Γu(E C) into itself and a * t is a continuous linear operator from Γu(E C) * into itself. In paticular, at + a * t and at+a * t +a * t at+I are called the quantum Gaussian white noise and the quantum Poisson white noise, respectively. The main purpose of this work is to realize quantum Gaussian and Poisson white noises in terms of multiple Wiener-Itô integrals, and show that such realizations cannot be achieved by J-transform and its holomorphy, but can be done by S X-transform depending on the exponential function φ X ξ , which determines a unitary isomorphism between Boson Fock space and L 2 (E * , µ X), X = G, P. In Appendix A, some connections between [6][7] and [9] will be discussed.

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