Open this publication in new window or tab >>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
2022-03-252022-03-252023-06-08Bibliographically approved