Superconformal ghost correlations on Riemann surfaces
Abstract
We give a short summary of chiral bosonization on Riemann surfaces, with emphasis on commuting fermions, so-called (β, γ) systems. Employing Fay's trisecant identity a new, fermionic representation for superconformal ghost correlations is found. Especially useful for multi-loop superstring calculations, it completes an earlier proof that the cosmological constant vanishes up to eight loops.
- Publication:
-
Physics Letters B
- Pub Date:
- November 1989
- DOI:
- 10.1016/0370-2693(89)91686-9
- Bibcode:
- 1989PhLB..232..193L