On orientifolds of orbifolds

Autor: A.N. Schellekens, T.P.T. Dijkstra, F. Riccioni, B. Gato-Rivera
Rok vydání: 2004
Předmět:
Zdroj: Nuclear Physics B. 698:450-472
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2004.08.017
Popis: 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.
Databáze: OpenAIRE