An Orientifold from F Theory

TL;DR

This paper computes the massless spectrum of a specific IIB string theory orientifold and demonstrates its equivalence to F theory on a particular Calabi-Yau threefold, also exploring target space duality.

Contribution

It provides a detailed calculation of the massless spectrum and establishes a duality between orientifold and F theory models on a Calabi-Yau threefold.

Findings

Massless spectrum matches between orientifold and F theory.

Identifies the Calabi-Yau with Hodge numbers h11=51, h21=3.

Discusses target space duality in this context.

Abstract

The massless spectrum of an orientifold of the IIB string theory is computed and shown to be identical to F theory on the Calabi-Yau threefold with $h_{11}=51$ and $h_{21}=3$. Target space duality is also considered in this model.