From $sl_q(2)$ to a Parabosonic Hopf Algebra

Details From $sl_q(2)$ to a Parabosonic Hopf Algebra From $sl_q(2)$ to a Parabosonic Hopf Algebra

2011-08-08

arxiv.org/abs/1108.1603v3

SIGMA 7 (2011), 093, 13 pages

Physics

Mathematical Physics

Scientific paper

10.3842/SIGMA.2011.093

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.

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