Results 31 to 40 of about 1,201 (100)

Discrete Quantum Mechanics [PDF]

open access: yes, 2011
A comprehensive review of the discrete quantum mechanics with the pure imaginary shifts and the real shifts is presented in parallel with the corresponding results in the ordinary quantum mechanics.
Odake, Satoru, Sasaki, Ryu
core   +3 more sources

Shape Invariant Potentials in "Discrete Quantum Mechanics" [PDF]

open access: yes, 2004
Shape invariance is an important ingredient of many exactly solvable quantum mechanics. Several examples of shape invariant ``discrete quantum mechanical systems" are introduced and discussed in some detail.
Odake, S., Sasaki, R.
core   +2 more sources

The generalized Koebe function [PDF]

open access: yesПроблемы анализа, 2010
We observe that the extremal function for |a 3| within the class U' α (see Starkov [1]) has as well the property that max|A 4|>4.15, if α=2. The problem is equivalent to the global estimate for Meixner-Pollaczek polynomials P 1 3(x;θ).
Naraniecka I., Szynal J., Tatarczak A.
doaj  

The asymptotics of the mittag-leffler polynomials [PDF]

open access: yes, 2012
We investigate the asymptotic behaviour of the Mittag-Leffler polynomials Gn(z) for large n and z, where z is a complex variable satisfying 0 arg z 12 π .
Paris, Richard B.
core   +2 more sources

Bethe Ansatz Solutions to Quasi Exactly Solvable Difference Equations

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
Bethe ansatz formulation is presented for several explicit examples of quasi exactly solvable difference equations of one degree of freedom which are introduced recently by one of the present authors.
Ryu Sasaki, Wen-Li Yang, Yao-Zhong Zhang
doaj   +1 more source

Meixner polynomials of the second kind and quantum algebras representing su(1,1)

open access: yes, 2009
We show how Viennot's combinatorial theory of orthogonal polynomials may be used to generalize some recent results of Sukumar and Hodges on the matrix entries in powers of certain operators in a representation of su(1,1).
Chihara T. S.   +3 more
core   +1 more source

Exactly solvable `discrete' quantum mechanics; shape invariance, Heisenberg solutions, annihilation-creation operators and coherent states [PDF]

open access: yes, 2008
Various examples of exactly solvable `discrete' quantum mechanics are explored explicitly with emphasis on shape invariance, Heisenberg operator solutions, annihilation-creation operators, the dynamical symmetry algebras and coherent states.
Odake, Satoru, Sasaki, Ryu
core   +3 more sources

Asymptotics of extreme zeros of the Meixner-Pollaczek polynomials

open access: yesJournal of Computational and Applied Mathematics, 1997
The authors, in this paper study the asymptotic behaviour of the extreme zeros of the Meixner-Pollaczek polynomials (for notation see \textit{T. S. Chihara}, An introduction to orthogonal polynomials (1978; Zbl 0389.33008). A typical result is given by their Theorem (5.1) which states that the largest and smallest zeros \(X_{N,1}\) and \(X_{N,N}\) of a
Chen, Yang, Ismail, Mourad E.H.
openaire   +1 more source

Wigner quantization of some one-dimensional Hamiltonians

open access: yes, 2010
Recently, several papers have been dedicated to the Wigner quantization of different Hamiltonians. In these examples, many interesting mathematical and physical properties have been shown.
Berezanski Yu. M.   +9 more
core   +1 more source

Premixed flame shapes and polynomials [PDF]

open access: yes, 2014
The nonlinear nonlocal Michelson-Sivashinsky equation for isolated crests of unstable flames is studied, using pole-decompositions as starting point. Polynomials encoding the numerically computed 2N flame-slope poles, and auxiliary ones, are found to ...
Denet, Bruno, Joulin, Guy
core   +3 more sources

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