Results 91 to 100 of about 8,950 (170)

Exact Solutions and Symmetry Operators for the Nonlocal Gross-Pitaevskii Equation with Quadratic Potential

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2005
The complex WKB-Maslov method is used to consider an approach to the semiclassical integrability of the multidimensional Gross-Pitaevskii equation with an external field and nonlocal nonlinearity previously developed by the authors.
Alexander Shapovalov   +2 more
doaj  

Error of semiclassical eigenvalues in the semiclassical limit - an asymptotic analysis of the Sinai billiard [PDF]

open access: yesJournal of Physics A: Mathematical and General, 1999
We estimate the error in the semiclassical trace formula for the Sinai billiard under the assumption that the largest source of error is due to Penumbra diffraction, that is diffraction effects for trajectories passing within a distance R O((kR)^(-2/3) to the disk and trajectories being scattered in very forward directions. Here k is the momentum and R
openaire   +2 more sources

Comparative asymptotics for discrete semiclassical orthogonal polynomials

open access: yes, 2022
We study the ratio $frac{P_{n}left( x;zright) }{phi_{n}left( xright)}$ asymptotically as $nrightarrowinfty,$ where the polynomials $P_{n}left(x;zright) $ are orthogonal with respect to a discrete linear functional and $phi_{n}left( xright) $ denote the falling factorial polynomials.
openaire   +3 more sources

Nonlinear Fokker-Planck Equation in the Model of Asset Returns

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
The Fokker-Planck equation with diffusion coefficient quadratic in space variable, linear drift coefficient, and nonlocal nonlinearity term is considered in the framework of a model of analysis of asset returns at financial markets.
Alexander Shapovalov   +2 more
doaj  

Semiclassical Asymptotic Expansions for Functions of the Bochner–Schrödinger Operator

open access: yesRussian Journal of Mathematical Physics, 2023
24 pages, v2: a result on asymptotic localization of eigenfunctions is ...
openaire   +2 more sources

Semiclassical asymptotics of quantum weighted Hurwitz numbers

open access: yes, 2016
This work concerns the semiclassical asymptotics of quantum weighted double Hurwitz numbers. We compute the leading term of the partition function for three versions of the quantum weighted Hurwitz numbers, as well as lower order semiclassical corrections.
Harnad, J., Ortmann, Janosch
openaire   +2 more sources

Full semiclassical asymptotics near transition points

open access: yesPure and Applied Analysis
We construct complete asymptotic expansions of solutions of the 1D semiclassical Schrödinger equation near transition points. There are three main novelties: (1) transition points of order $κ\geq 2$ (i.e.\ trapped points -- the simple turning point is $κ=1$, the simple pole is $κ=-1$) are handled, (2) various terms in the operator are allowed to have ...
openaire   +2 more sources

On the Spectral Form Factor for Random Matrices. [PDF]

open access: yesCommun Math Phys, 2023
Cipolloni G, Erdős L, Schröder D.
europepmc   +1 more source

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