N=2 String Loops and Spectral Flow
High Energy Physics - Theory
2007-05-23 v1
Abstract
Based on our previous studies of the BRST cohomology of the critical N=2 strings, we construct the loop measure and make explicit the role of the spectral flow at arbitrary genus and Chern class, in a holomorphic field basis. The spectral flow operator attributes to the existence of the hidden `small' N=4 superconformal symmetry which is non-linearly realized. We also discuss the symmetry properties of N=2 string amplitudes on locally-flat backgrounds.
Cite
@article{arxiv.hep-th/9510005,
title = {N=2 String Loops and Spectral Flow},
author = {S. V. Ketov},
journal= {arXiv preprint arXiv:hep-th/9510005},
year = {2007}
}
Comments
7 pages, Talk given at the International Workshop on Strings, Gravity and Related Topics, 29--30 June 1995, ICTP, Trieste, Italy