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Mouayn, Zouhair
Publications (5 of 5) Show all publications
Mouayn, Z., Chhaiba, H., Kassogue, H. & Kikodio, P. K. (2022). HUSIMI Q-FUNCTIONS ATTACHED TO HYPERBOLIC LANDAU LEVELS. Reports on mathematical physics, 89(1), 27-57
Open this publication in new window or tab >>HUSIMI Q-FUNCTIONS ATTACHED TO HYPERBOLIC LANDAU LEVELS
2022 (English)In: Reports on mathematical physics, ISSN 0034-4877, E-ISSN 1879-0674, Vol. 89, no 1, p. 27-57Article in journal (Refereed) Published
Abstract [en]

We are concerned with a phase-space probability distribution which is known as Husimi Q-function of a density operator with respect to a set of coherent states vertical bar(kappa) over tilde (Z,B,R,m)> attached to an mth hyperbolic Landau level and labeled by points z of an open disk of radius R, where B > 0 is proportional to a magnetic field strength. For a density operator representing a projector on a Fock state vertical bar j > we obtain the Q(j) distribution and discuss some of its basic properties such as its characteristic function and its main statistical parameters. We achieve the same program for the thermal density operator (mixed states) of the isotonic oscillator for which we establish a lower bound for the associated thermodynamic potential. We recover most of the results of the Euclidean setting (flat case) as the parameter R goes to infinity by making appeal to asymptotic formulas involving orthogonal polynomials and special functions. As a tool, we establish a summation formula for the special Kampe de Feriet function F-2:0:0(1:2:2).

Place, publisher, year, edition, pages
PERGAMON-ELSEVIER SCIENCE LTD, 2022
Keywords
coherent states, isotonic oscillator, Husimi Q-function, hyperbolic Landau level, thermodynamic potential
National Category
Mathematical Analysis
Identifiers
urn:nbn:se:kth:diva-310246 (URN)10.1016/s0034-4877(22)00009-x (DOI)000764343000003 ()2-s2.0-85125719666 (Scopus ID)
Note

QC 20220325

Available from: 2022-03-25 Created: 2022-03-25 Last updated: 2023-06-08Bibliographically approved
El Moize, O. & Mouayn, Z. (2021). A q-deformation of true-polyanalytic Bargmann transforms when q(-1) > 1. Comptes rendus. Mathematique, 359(10), 1295-1305
Open this publication in new window or tab >>A q-deformation of true-polyanalytic Bargmann transforms when q(-1) > 1
2021 (English)In: Comptes rendus. Mathematique, ISSN 1631-073X, E-ISSN 1778-3569, Vol. 359, no 10, p. 1295-1305Article in journal (Refereed) Published
Abstract [en]

We combine continuous q(-1)-Hermite Askey polynomials with new 2D orthogonal polynomials introduced by Ismail and Zhang as q-analogs for complex Hermite polynomials to construct a new set of coherent states depending on a nonnegative integer parameter m. Our construction leads to a new q-deformation of the m-true- polyanalytic Bargmann transform on the complex plane. In the analytic case m = 0, the obtained coherent states transform can be associated with the Arik-Coon oscillator for q(0) = q(-1) > 1. These result may be used to introduce a q-deformed Ginibre-type point process.

Place, publisher, year, edition, pages
Cellule MathDoc/CEDRAM, 2021
National Category
Mathematical Analysis
Identifiers
urn:nbn:se:kth:diva-307273 (URN)10.5802/crmath.284 (DOI)000740810200008 ()2-s2.0-85123361213 (Scopus ID)
Note

QC 20220120

Available from: 2022-01-20 Created: 2022-01-20 Last updated: 2022-06-25Bibliographically approved
Mouayn, Z. & El Moize, O. (2021). A set of q-coherent states for the Rogers-Szego oscillator. Letters in Mathematical Physics, 111(6), Article ID 143.
Open this publication in new window or tab >>A set of q-coherent states for the Rogers-Szego oscillator
2021 (English)In: Letters in Mathematical Physics, ISSN 0377-9017, E-ISSN 1573-0530, Vol. 111, no 6, article id 143Article in journal (Refereed) Published
Abstract [en]

We discuss a model of a q-harmonic oscillator based on Rogers-Szego functions. We combine these functions with a class of q-analogs of complex Hermite polynomials to construct a new set of coherent states depending on a nonnegative integer parameter m. Our construction leads to a new q-deformation of the m-true-polyanalytic Bargmann transform whose range defines a generalization of the Arik-Coon space. We also give an explicit formula for the reproducing kernel of this space. The obtained results may be exploited to define a q-deformation of the Ginibre-m-type process on the complex plane.

Place, publisher, year, edition, pages
Springer Nature, 2021
Keywords
q-deformed 2D complex Hermite polynomials, q-coherent states, Rogers-Szego oscillator, q-deformed Bargmann transform, Generalized Arik-Coon spaces, Reproducing kernels
National Category
Mathematical Analysis
Identifiers
urn:nbn:se:kth:diva-306447 (URN)10.1007/s11005-021-01486-y (DOI)000722598800001 ()2-s2.0-85119988851 (Scopus ID)
Note

QC 20211217

Available from: 2021-12-17 Created: 2021-12-17 Last updated: 2022-06-25Bibliographically approved
Demni, N., Mouayn, Z. & Yaqine, H. (2021). Berezin Transforms Attached to Landau Levels on the Complex Projective Space P-n(C). Journal of Mathematical Physics, Analysis, Geometry, 17(4), 422-440
Open this publication in new window or tab >>Berezin Transforms Attached to Landau Levels on the Complex Projective Space P-n(C)
2021 (English)In: Journal of Mathematical Physics, Analysis, Geometry, ISSN 1812-9471, E-ISSN 1817-5805, Vol. 17, no 4, p. 422-440Article in journal (Refereed) Published
Abstract [en]

We construct coherent states for each eigenspace of a magnetic Laplacian on the complex projective n-space in order to apply a quantization-dequantization method. Doing so allows to define the Berezin transform for these spaces. We then establish a formula for this transform as a function of the Fubini-Study Laplacian in a closed form involving of a terminating Kampe de Feriet function. For the lowest spherical Landau level on the Riemann sphere the obtained formula reduces to the one derived by Berezin himself.

Place, publisher, year, edition, pages
B VERKIN INST LOW TEMPERATURE PHYSICS & ENGINEERING NAS UKRAINE, 2021
Keywords
complex projective space, coherent states, Berezin transform, magnetic Laplacians, Fubini-Study Laplacian, Koornwinder's formula, Clebsh-Gordan type relation, Kampe de Feriet function
National Category
Control Engineering
Identifiers
urn:nbn:se:kth:diva-306809 (URN)10.15407/mag17.04.422 (DOI)000728763800002 ()2-s2.0-85120804532 (Scopus ID)
Note

QC 20220112

Available from: 2022-01-12 Created: 2022-01-12 Last updated: 2022-11-30Bibliographically approved
Mouayn, Z. & Yamani, H. A. (2021). Coherent states of systems with pure continuous energy spectra. Journal of Mathematical Physics, 62(6), Article ID 063510.
Open this publication in new window or tab >>Coherent states of systems with pure continuous energy spectra
2021 (English)In: Journal of Mathematical Physics, ISSN 0022-2488, E-ISSN 1089-7658, Vol. 62, no 6, article id 063510Article in journal (Refereed) Published
Abstract [en]

While dealing with a Hamiltonian with a continuous spectrum, we use a tridiagonal method involving orthogonal polynomials to construct a set of coherent states obeying a Glauber-type condition. We perform a Bayesian decomposition of the weight function of the orthogonality measure to show that the obtained coherent states can be recast in the Gazeau-Klauder approach. The Hamiltonian of the l-wave free particle is treated as an example to illustrate the method. Published under an exclusive license by AIP Publishing.

Place, publisher, year, edition, pages
AIP Publishing, 2021
National Category
Other Natural Sciences
Identifiers
urn:nbn:se:kth:diva-302009 (URN)10.1063/5.0030759 (DOI)000692103900001 ()2-s2.0-85108084688 (Scopus ID)
Note

QC 20210917

Available from: 2021-09-17 Created: 2021-09-17 Last updated: 2022-06-25Bibliographically approved
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