Orientifolds of type IIA strings on Calabi-Yau manifolds
arXiv:hep-th/0305108 · doi:10.1007/BF02705353
Abstract
We identify type IIA orientifolds that are dual to M-theory compactifications on manifolds with G_2-holonomy. We then discuss the construction of crosscap states in Gepner models. (Based on a talk presented by S.G. at PASCOS 2003 held at the Tata Institute of Fundamental Research, Mumbai during Jan. 3-8, 2003.)
3 pages, RevTeX, PASCOS '03 talk