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White Noise Calculus and Nonlinear Filtering Theory

open access: yesAnnals of Probability, 1985
Quite a while ago, \textit{A. V. Balakrishnan} stressed the inadequacies of modeling white noise with a Wiener process [see for example, Appl. Math. Optimization 1, 97-120 (1974; Zbl 0306.90056)] and suggested that white noise be represented by an additive only probability measure. His main concern was the problem of detecting signals.
G Kallianpur, Rajeeva L Karandikar
exaly   +6 more sources

RENORMALIZED HIGHER POWERS OF WHITE NOISE (RHPWN) AND CONFORMAL FIELD THEORY [PDF]

open access: yesInfinite Dimensional Analysis, Quantum Probability and Related Topics, 2006
The Virasoro–Zamolodchikov *-Lie algebra w∞ has been widely studied in string theory and in conformal field theory, motivated by the attempts of developing a satisfactory theory of quantization of gravity. The renormalized higher powers of quantum white noise (RHPWN) *-Lie algebra has been recently investigated in quantum probability, motivated by the
Luigi Accardi, Andreas Boukas
exaly   +7 more sources

White noise theory of robust nonlinear filtering with correlated state and observation noises [PDF]

open access: yesSystems and Control Letters, 1994
This paper deals with the robust nonlinear filtering equations in the correlated observation noise case. In the existing `direct' white noise theory of nonlinear filtering, the state process is still modelled as a Markov process satisfying an Itô stochastic differential equation (which is not robust due to the fact that the set of all possible real ...
Arunabha Bagchi, Rajeeva L Karandikar
exaly   +7 more sources

ON QUANTUM THEORY IN TERMS OF WHITE NOISE [PDF]

open access: yesNagoya Mathematical Journal, 1977
It has often been pointed out that a much more manageable structure is obtained from quantum theory if the time parameter t is chosen imaginary instead of real. Under a replacement of t by i·t the Schrödinger equation turns into a generalized heat equation, time ordered correlation functions transform into the moments of a probability measure, etc ...
HIDA, T, Streit, Ludwig
openaire   +6 more sources

An introduction to white–noise theory and Malliavin calculus for fractional Brownian motion [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2004
The paper presents an introduction to stochastic calculus for fractional Brownian motion with parameter between 0 and 1, with emphasis on stochastic integration based on white noise theory and Malliavin differentiation.
Francesca Biagini   +2 more
exaly   +4 more sources

Hypercomplex Systems and Non-Gaussian Stochastic Solutions with Some Numerical Simulation of χ-Wick-Type (2 + 1)-D C-KdV Equations

open access: yesAxioms, 2022
In this article, we discuss the (2 + 1)-D coupled Korteweg–De Vries (KdV) equations whose coefficients are variables, and stochastic (2 + 1)-D C-KdV (C-KdV) equations with the χ-Wick-type product.
Mohammed Zakarya   +2 more
doaj   +1 more source

Bifurcation and Analytical Solutions of the Space-Fractional Stochastic Schrödinger Equation with White Noise

open access: yesFractal and Fractional, 2023
The qualitative theory for planar dynamical systems is used to study the bifurcation of the wave solutions for the space-fractional nonlinear Schrödinger equation with multiplicative white noise.
Muneerah Al Nuwairan
doaj   +1 more source

Interspike interval correlations in neuron models with adaptation and correlated noise.

open access: yesPLoS Computational Biology, 2021
The generation of neural action potentials (spikes) is random but nevertheless may result in a rich statistical structure of the spike sequence. In particular, contrary to the popular renewal assumption of theoreticians, the intervals between adjacent ...
Lukas Ramlow, Benjamin Lindner
doaj   +1 more source

Generalized Mehler Semigroup on White Noise Functionals and White Noise Evolution Equations

open access: yesMathematics, 2020
In this paper, we study a representation of generalized Mehler semigroup in terms of Fourier–Gauss transforms on white noise functionals and then we have an explicit form of the infinitesimal generator of the generalized Mehler semigroup in terms of the ...
Un Cig Ji, Mi Ra Lee, Peng Cheng Ma
doaj   +1 more source

Outbreak-size distributions under fluctuating rates

open access: yesPhysical Review Research, 2023
We study the effect of noisy infection (contact) and recovery rates on the distribution of outbreak sizes in the stochastic susceptible-infected-recovered model.
Jason Hindes   +3 more
doaj   +1 more source

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