NONPOLYNOMIAL REALIZATIONS OF ${\mathcal W}$ ALGEBRAS
NONPOLYNOMIAL REALIZATIONS OF ${\mathcal W}$ ALGEBRAS
Relaxing first-class constraint conditions in the usual Drinfeld—Sokolov Hamiltonian reduction leads, after symmetry fixing, to realizations of [Formula: see text] algebras expressed in terms of all the J current components. General results are given for [Formula: see text] a nonexceptional simple (finite and affine) algebra. Such calculations directly provide the …