Results 1 to 10 of about 8,830 (95)

Transverse Evolution Operator for the Gross-Pitaevskii Equation in Semiclassical Approximation [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2005
The Gross-Pitaevskii equation with a local cubic nonlinearity that describes a many-dimensional system in an external field is considered in the framework of the complex WKB-Maslov method.
Alexey Borisov   +2 more
doaj   +4 more sources

Résonances Semiclassiques Engendrées par des Croisements de Trajectoires Classiques

open access: yesComptes Rendus. Mathématique, 2021
We consider a $2\times 2$ system of one-dimensional semiclassical Schrödinger operators with small interactions with respect to the semiclassical parameter $h$.
Higuchi, Kenta
doaj   +1 more source

Comparative asymptotics for discrete semiclassical orthogonal polynomials

open access: yesBulletin of Mathematical Sciences, 2023
We study the ratio [Formula: see text] asymptotically as [Formula: see text], where the polynomials [Formula: see text] are orthogonal with respect to a discrete linear functional and [Formula: see text] denote the falling factorial polynomials.
Diego Dominici
doaj   +1 more source

Semiclassical Approach to the Nonlocal Kinetic Model of Metal Vapor Active Media

open access: yesMathematics, 2021
A semiclassical approach based on the WKB–Maslov method is developed for the kinetic ionization equation in dense plasma with approximations characteristic of metal vapor active media excited by a contracted discharge.
Alexander V. Shapovalov   +1 more
doaj   +1 more source

Semiclassical asymptotics of nonlinear Fokker-Plank equation for distributions of asset returns [PDF]

open access: yesКомпьютерные исследования и моделирование, 2009
The semiclassical approximation method is applied for solution construction of the Fokker-Planck equation with quadratic nonlocal nonlinearity and various coefficients in models of asset returns estimation.
Andrey Yur'evich Trifonov   +2 more
doaj   +1 more source

Heat Kernels Estimates for Hermitian Line Bundles on Manifolds of Bounded Geometry

open access: yesMathematics, 2021
We consider a family of semiclassically scaled second-order elliptic differential operators on high tensor powers of a Hermitian line bundle (possibly, twisted by an auxiliary Hermitian vector bundle of arbitrary rank) on a Riemannian manifold of bounded
Yuri A. Kordyukov
doaj   +1 more source

The Einstein-Ehrenfest system of (0, M)-type and asymptotical solutions of the multidimensional nonlinear Fokker-Planck-Kolmogorov equation [PDF]

open access: yesКомпьютерные исследования и моделирование, 2010
Semiclassical approximation formalism is developed for the multidimensional Fokker-Planck-Kolmogorov equation with non-local and nonlinear drift vector with respect to a small diffusion coefficient D, D0, in the class of trajectory concentrated functions.
Roman Olegovich Rezaev   +2 more
doaj   +1 more source

100 years of Weyl’s law

open access: yesBulletin of Mathematical Sciences, 2016
We discuss the asymptotics of the eigenvalue counting function for partial differential operators and related expressions paying the most attention to the sharp asymptotics.
Victor Ivrii
doaj   +1 more source

Non-equilibrium quantum transport in presence of a defect: the non-interacting case

open access: yesSciPost Physics, 2019
We study quantum transport after an inhomogeneous quantum quench in a free fermion lattice system in the presence of a localised defect. Using a new rigorous analytical approach for the calculation of large time and distance asymptotics of physical ...
Marko Ljubotina, Spyros Sotiriadis, Tomaž Prosen
doaj   +1 more source

SEMICLASSICAL ASYMPTOTICS OF EIGENVALUES FOR NON-SELFADJOINT OPERATORS AND QUANTIZATION CONDITIONS ON RIEMANN SURFACES

open access: yesActa Polytechnica, 2014
This paper reports a study of the semiclassical asymptotic behavior of the eigenvalues of some nonself-adjoint operators that are important for applications. These operators are the Schrödinger operator with complex periodic potential and the operator of
Anna I. Esina, Andrei I. Shafarevich
doaj   +1 more source

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