Highly Influenced

4 Excerpts

@inproceedings{Klebanov1992WardII, title={Ward identities in two-dimensional string theory}, author={Igor R. Klebanov}, year={1992} }

- Published 1992
DOI:10.1142/S0217732392000690

I study the Ward identities of the w∞ symmetry of the two-dimensional string theory. It is found that, not just an isolated vertex operator, but also a number of vertex operators colliding at a point can produce local charge non-conservation. The structure of all such contact terms is determined. As an application, I calculate all the non-vanishing bulk tachyon amplitudes directly through the Ward identities for a Virasoro subalgebra of the w∞. Recently, a considerable effort has been devoted… CONTINUE READING