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arXiv · 1009.0107

No-Ghost Theorem for Neveu-Schwarz String in 0-Picture

Maiko Kohriki·Hiroshi Kunitomo·Masaki Murata
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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.

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Maiko Kohriki, Hiroshi Kunitomo, Masaki Murata. 2012-01-31. No-Ghost Theorem for Neveu-Schwarz String in 0-Picture. https://doi.org/10.1143/ptp.124.953

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