3 papers
math.QA2004
Jordanian Quantum (Super)Algebras via Contraction Method and Mapping:Review
B. Abdesselam, R. Chakrabarti, A. Yanallah +1
Recently, a class of transformations of -matrices was introduced such that the limit gives explicit nonstandard -matrices. The transformation matrix is singular…
math.QA2003
On Nonstandard Quantizations of osp(2|1) Superalgebra via Contraction and Mapping
B. Abdesselam, R. Chakrabarti, A. Hazzab +1
We develop a generic reprersentation-independent contraction procedure for obtaining, for instance, and operators of arbitrary dimensions for the quantized ${\cal U…
hep-th2002
Non-factorisable metrics and Gauss--Bonnet terms in higher dimensions
B. Abdesselam, A. Chakrabarti, J. Rizos +1
An iterative construction of higher order Einstein tensors for a maximally Gauss-Bonnet extended gravitational Lagrangian was introduced in a previous paper. Here the formalism is…