Rational vs Polynomial Character of W$_n^l$-Algebras

Details Rational vs Polynomial Character of W$_n^l$-Algebras Rational vs Polynomial Character of W$_n^l$-Algebras

1992-01-21

arxiv.org/abs/hep-th/9201038v2

Physics

High Energy Physics

High Energy Physics - Theory

18 pages

Scientific paper

10.1016/0370-2693(92)90015-V

The constraints proposed recently by Bershadsky to produce $W^l_n$ algebras are a mixture of first and second class constraints and are degenerate. We show that they admit a first-class subsystem from which they can be recovered by gauge-fixing, and that the non-degenerate constraints can be handled by previous methods. The degenerate constraints present a new situation in which the natural primary field basis for the gauge-invariants is rational rather than polynomial. We give an algorithm for constructing the rational basis and converting the base elements to polynomials.

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