On Orientifolds of c=1 Orbifolds
High Energy Physics - Theory
2009-11-10 v2
Abstract
The aim of this paper is to study orientifolds of c=1 conformal field theories. A systematic analysis of the allowed orientifold projections for c=1 orbifold conformal field theories is given. We compare the Klein bottle amplitudes obtained at rational points with the orientifold projections that we claim to be consistent for any value of the orbifold radius. We show that the recently obtained Klein bottle amplitudes corresponding to exceptional modular invariants, describing bosonic string theories at fractional square radius, are also in agreement with those orientifold projections.
Keywords
Cite
@article{arxiv.hep-th/0310295,
title = {On Orientifolds of c=1 Orbifolds},
author = {T. P. T. Dijkstra and B. Gato-Rivera and F. Riccioni and A. N. Schellekens},
journal= {arXiv preprint arXiv:hep-th/0310295},
year = {2009}
}
Comments
30 pages, LaTeX. Refs. and comments added, typos corrected. Version appeared on NPB