The covariant scattering and cohomology of $W_3$ strings

Details The covariant scattering and cohomology of $W_3$ strings The covariant scattering and cohomology of $W_3$ strings

1993-02-24

arxiv.org/abs/hep-th/9302114v1

Int.J.Mod.Phys. A8 (1993) 4261-4290

Physics

High Energy Physics

High Energy Physics - Theory

36 pages, KCL-TH-93-2

Scientific paper

A general formalism for covariant $W_3$ string scattering is given. It is found necessary to use screening charges that are constructed from the $W_3$ fields including ghosts. The scattering amplitudes so constructed contain within them Ising model correlation functions and agree with those found previously by the authors. Using the screening charge and a picture changing operator, an infinite number of states in the cohomology of Q are generated from only three states. We conjecture that, apart from discrete states, these are all the states in the cohomology of Q.

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