Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1993-01-04
Mod.Phys.Lett. A8 (1993) 1527-1532
Physics
High Energy Physics
High Energy Physics - Theory
10 pages, Latex, IP/BBSR/92-90
Scientific paper
It is shown that the previously known $N=3$ and $N=4$ superconformal algebras
can be contracted consistently by singular scaling of some of the generators.
For the later case, by a contraction which depends on the central term, we
obtain a new $N=4$ superconformal algebra which contains an $SU(2)\times
{U(1)}^4$ Kac-Moody subalgebra and has nonzero central extension.
Ali Abbas
Kumar Alok
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