No-Ghost Theorem for Neveu-Schwarz String in 0-Picture
High Energy Physics - Theory
2012-02-01 v4
Abstract
The no-ghost theorem for Neveu-Schwarz string is directly proved in 0-picture. The one-to-one correspondence between physical states in 0-picture and those in the conventional (-1)-picture are confirmed. It is shown that a non-trivial metric consistent with the BRST cohomology is needed to define a positive semi-definite norm in the physical Hilbert space. As a by-product, we find a new inverse picture changing operator, which is non-covariant but has non-singular operator product with itself. A possibility to construct a new gauge invariant superstring field theory is discussed.
Keywords
Cite
@article{arxiv.1009.0107,
title = {No-Ghost Theorem for Neveu-Schwarz String in 0-Picture},
author = {Maiko Kohriki and Hiroshi Kunitomo and Masaki Murata},
journal= {arXiv preprint arXiv:1009.0107},
year = {2012}
}
Comments
18 pages, v2:typos corrected, v3:published version, v4:typos corrected