| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10724003 | Physics Letters B | 2009 | 5 Pages |
Abstract
We consider the non-relativistic cââ contraction limit of the (N=2k)-extended D=4 superconformal algebra su(2,2;N), introducing in this way the non-relativistic (N=2k)-extended Galilean superconformal algebra. Such a Galilean superconformal algebra has the same number of generators as su(2,2|2k). The usp(2k) algebra describes the non-relativistic internal symmetries, and the generators from the coset u(2k)usp(2k) become central charges after contraction.
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Authors
J.A. de Azcárraga, J. Lukierski,