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Joined 2026-09-21 Message
Incoming links: Möbius transformation
Three-point worldsheet ghost correlator 2026-10-07
On the Riemann sphere, three holomorphic reparameterization ghost zero modes correspond to the three infinitesimal Möbius transformations. Three insertions saturate their Grassmann integral. In a basis , their integral is the Vandermonde determinant, giving up to an ordering-dependent sign. Including the antiholomorphic factor gives , the Jacobian in sphere gauge fixing for four string vertices.