Results 1 to 10 of about 3,832 (288)

Stochastic integral representation theorem for quantum semimartingales

open access: yesJournal of Functional Analysis, 2003
The quantum stochastic integral of Itô type formulated by \textit{R. L. Hudson} and \textit{K. R. Parthasarathy} [Commun. Math. Phys. 93, 301--323 (1984; Zbl 0546.60058)] is extended to a wide class of adapted quantum stochastic processes on Boson Fock space.
Un Çig Ji
exaly   +3 more sources

Stochastic Path-Integral Analysis of the Continuously Monitored Quantum Harmonic Oscillator [PDF]

open access: yesPRX Quantum, 2022
We consider the evolution of a quantum simple harmonic oscillator in a general Gaussian state under simultaneous time-continuous weak position and momentum measurements.
Tathagata Karmakar   +2 more
doaj   +4 more sources

Motion of Quantum Particles in Terms of Probabilities of Paths [PDF]

open access: yesEntropy
The Feynman path integral formalism for non-relativistic quantum mechanics is revisited. A comparison is made with cases of light propagation (Huygens’ principle) and Brownian motion. The difficulties for a physical model applying Feynman’s formalism are
Emilio Santos
doaj   +3 more sources

The Stochastic-Quantum Correspondence [PDF]

open access: yesPhilosophy of Physics
This paper argues that every quantum system can be understood as a sufficiently general kind of stochastic process unfolding in an old-fashioned configuration space according to ordinary notions of probability.
Jacob A. Barandes
doaj   +3 more sources

Stochastic analysis & discrete quantum systems

open access: yesNuclear Physics B, 2019
We explore the connections between the theories of stochastic analysis and discrete quantum mechanical systems. Naturally these connections include the Feynman-Kac formula, and the Cameron-Martin-Girsanov theorem.
Anastasia Doikou   +2 more
doaj   +2 more sources

Stochastic path-integral formalism for continuous quantum measurement

open access: yesPhysical Review A, 2015
We generalize and extend the stochastic path integral formalism and action principle for continuous quantum measurement introduced in [A. Chantasri, J. Dressel and A. N. Jordan, Phys. Rev. A {\bf 88}, 042110 (2013)], where the optimal dynamics, such as the most-likely paths, are obtained by extremizing the action of the path integral.
Chantasri, Areeya, Jordan, Andrew N.
openaire   +5 more sources

Quantum stochastic integrals under standing hypotheses

open access: yesJournal of Mathematical Analysis and Applications, 1987
We study the meaning of stochastic integrals when the integrator is a quantum stochastic process which is not quite a martingale, in that it obeys estimates of the type advocated by \textit{E. J. McShane} [Stochastic calculus and stochastic models. (1974; Zbl 0292.60090)] in the classical case.
Barnett, C, Streater, R.F, Wilde, I.F
openaire   +2 more sources

Quantum stochastic integrals as belated integrals [PDF]

open access: yesGlasgow Mathematical Journal, 1992
Quantum stochastic integrals have been constructed in various contexts [2, 3, 4, 5, 9] by adapting the construction of the classical L2-Itô-integral with respect to Brownian motion. Thus, the integral is first defined for simple integrands as a finite sum, then one establishes certain isometry relations or suitable bounds to allow the extension, by ...
Barnett, Chris   +2 more
openaire   +1 more source

Kajian Integral Lintasan Levy dalam Mekanika Kuantum Fraksional untuk Membentuk Persamaan Schrodinger Fraksional

open access: yesRisenologi, 2020
The implementation of Lévy path integral generated by Lévy stochastic process on fractional Schrödinger equation has been investigated in the framework of fractional quantum mechanics.
Chandra Halim, M. Farchani Rosyid
doaj   +1 more source

Piecewise ensemble averaging stochastic Liouville equations for simulating non-Markovian quantum dynamics

open access: yesNew Journal of Physics, 2022
Here we present a novel stochastic Liouville equation with piecewisely correlated noises, in which the inter-piece correlation is rigorously incorporated by a convolution integral involving functional derivatives.
Yun-An Yan, Xiao Zheng, Jiushu Shao
doaj   +1 more source

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