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JOURNALS // Doklady Rossijskoj Akademii Nauk. Mathematika, Informatika, Processy Upravlenia // Archive

Dokl. RAN. Math. Inf. Proc. Upr., 2021 Volume 498, Pages 31–36 (Mi danma16)

This article is cited in 14 papers

MATHEMATICS

Random quantization of Hamiltonian systems

J. E. Gougha, Yu. N. Orlovbc, V. Zh. Sakbaevbd, O. G. Smolyanove

a Aberystwyth University, United Kingdom, Wales
b Keldysh Institute of Applied Mathematics of Russian Academy of Sciences, Moscow, Russian Federation
c Institute of Machines Science named after A.A. Blagonravov of the Russian Academy of Sciences, Moscow, Russian Federation
d Moscow Institute of Physics and Technology, Dolgoprudny, Russian Federation
e Lomonosov Moscow State University, Moscow, Russian Federation

Abstract: A quantization of a Hamiltonian system is an ambiguous procedure. Accordingly, we introduce the notion of random quantization, related random variables with values in the set of self-adjoint operators, and random processes with values in the group of unitary operators. The procedures for the averaging of random unitary groups and averaging of random self-adjoint operators are defined. The generalized weak convergence of a sequence of measures and the corresponding generalized convergence in distribution of a sequence of random variables are introduced. The generalized convergence in distribution for some sequences of compositions of random mappings is obtained. In the case of a sequence of compositions of shifts by independent random vectors of Euclidean space, the obtained convergence coincides with the statement of the central limit theorem for a sum of independent random vectors. The results are applied to the dynamics of quantum systems arising in random quantization of a Hamiltonian system.

Keywords: random linear operator, random operator-valued function, operator-valued random process, law of large numbers, central limit theorem, Markovian process, Kolmogorov equation.

UDC: 517.972

Presented: V. V. Kozlov
Received: 19.02.2021
Revised: 05.04.2021
Accepted: 05.04.2021

DOI: 10.31857/S2686954321030085


 English version:
Doklady Mathematics, 2021, 103:3, 122–126

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© Steklov Math. Inst. of RAS, 2025