KN Superalgebras with Vertex Operators
KN Superalgebras with Vertex Operators
We consider the closed superstring interacting with external gravitational field. The Krichever-Novikov superalgebras with this gravitational field as a vertex operator are derived from the Neveu-Schwarz and Ramond superalgebras with the same gravitational field in the genus-zero case. The “interacting” BRST charge and its associated identities are also constructed over …