|
This article is cited in 32 scientific papers (total in 32 papers)
From $sl_q(2)$ to a Parabosonic Hopf Algebra
Satoshi Tsujimotoa, Luc Vinetb, Alexei Zhedanovc a Department of Applied Mathematics and Physics, Graduate School of Informatics, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
b Centre de Recherches Mathématiques, Université de Montréal, P.O. Box 6128, Centre-ville Station, Montréal (Québec), H3C 3J7 Canada
c Donetsk Institute for Physics and Technology, Donetsk 83114, Ukraine
Abstract:
A Hopf algebra with four generators among which an involution (reflection) operator, is introduced. The defining relations involve commutators and anticommutators. The discrete series representations are developed. Designated by $sl_{-1}(2)$, this algebra encompasses the Lie superalgebra $osp(1|2)$. It is obtained as a $q=-1$ limit of the $sl_q(2)$ algebra and seen to be equivalent to the parabosonic oscillator algebra in irreducible
representations. It possesses a noncocommutative coproduct. The Clebsch–Gordan coefficients (CGC) of
$sl_{-1}(2)$ are obtained and expressed in terms of the dual $-1$ Hahn polynomials. A generating
function for the CGC is derived using a Bargmann realization.
Keywords:
parabosonic algebra; dual Hahn polynomials; Clebsch–Gordan coefficients.
Received: August 25, 2011; Published online October 7, 2011
Citation:
Satoshi Tsujimoto, Luc Vinet, Alexei Zhedanov, “From $sl_q(2)$ to a Parabosonic Hopf Algebra”, SIGMA, 7 (2011), 093, 13 pp.
Linking options:
https://www.mathnet.ru/eng/sigma651 https://www.mathnet.ru/eng/sigma/v7/p93
|
|