Results 31 to 40 of about 561,686 (251)

On Jacobi and continuous Hahn polynomials [PDF]

open access: green, 1994
Jacobi polynomials are mapped onto the continuous Hahn polynomials by the Fourier transform and the orthogonality relations for the continuous Hahn polynomials then follow from the orthogonality relations for the Jacobi polynomials and the Parseval formula.
Erik Koelink
openalex   +3 more sources

Quantum Systems Associated with the Hahn and Continuous Hahn Polynomials

open access: yesReports on Mathematical Physics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
A. D. Alhaidari, Yutian Li
semanticscholar   +3 more sources

GLOBAL ASYMPTOTICS OF THE HAHN POLYNOMIALS [PDF]

open access: yesAnalysis and Applications, 2013
In this paper, we study the asymptotics of the Hahn polynomials Qn(x; α, β, N) as the degree n grows to infinity, when the parameters α and β are fixed and the ratio of n/N = c is a constant in the interval (0, 1). Uniform asymptotic formulas in terms of Airy functions and elementary functions are obtained for z in three overlapping regions, which ...
Lin, Yu, Wong, R.
openaire   +3 more sources

Krylov complexity and orthogonal polynomials

open access: yesNuclear Physics B, 2022
Krylov complexity measures operator growth with respect to a basis, which is adapted to the Heisenberg time evolution. The construction of that basis relies on the Lanczos algorithm, also known as the recursion method.
Wolfgang Mück, Yi Yang
doaj   +1 more source

A shifted fractional-order Hahn functions Tau method for time-fractional PDE with nonsmooth solution [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2023
In this paper, a new orthogonal system of nonpolynomial basis functions is introduced and used to solve a class of time-fractional partial differential equations that have nonsmooth solutions.
N. Mollahasani
doaj   +1 more source

Computation of entanglement entropy in inhomogeneous free fermions chains by algebraic Bethe ansatz

open access: yesSciPost Physics Proceedings, 2023
The computation of the entanglement entropy for inhomogeneous free fermions chains based on $q$-Racah polynomials is considered. The eigenvalues of the truncated correlation matrix are obtained from the diagonalization of the associated Heun operator via
Pierre-Antoine Bernard, Gauvain Carcone, Nicolas Crampé, Luc Vinet
doaj   +1 more source

Quantum communication through a spin chain with interaction determined by a Jacobi matrix [PDF]

open access: yes, 2009
We obtain the time-dependent correlation function describing the evolution of a single spin excitation state in a linear spin chain with isotropic nearest-neighbour XY coupling, where the Hamiltonian is related to the Jacobi matrix of a set of orthogonal
Chakrabarti, R., Van der Jeugt, J.
core   +4 more sources

The generalized Hahn polynomials

open access: gold, 2015
In this paper, we represent the generalized Hahn polynomials ?(a)n (x, y) by the Cauchy operator for deriving its identities: generating function, Mehler’s formula, Rogers formula (with some of its applications), Rogers-type formula, extended generating function, extended Mehler’s formula, extended Rogers formula and another extended identities.
Mohammed A. Abdlhusein
openalex   +4 more sources

Fourier Transforms of Some Special Functions in Terms of Orthogonal Polynomials on the Simplex and Continuous Hahn Polynomials [PDF]

open access: yesBulletin of the Iranian Mathematical Society, 2020
In this paper, Fourier transform of multivariate orthogonal polynomials on the simplex is presented. A new family of multivariate orthogonal functions is obtained using the Parseval’s identity and several recurrence relations are derived.
E. Güldoğan Lekesiz   +2 more
semanticscholar   +1 more source

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