General Abelian Orientifold Models and One Loop Amplitudes

TL;DR

This paper develops a general framework for calculating one-loop amplitudes in Abelian orientifold models across various dimensions, revealing insights into orientifold plane contributions and model inconsistencies.

Contribution

It provides a universal method for one-loop amplitude computation in Abelian orientifolds and analyzes their physical implications and model consistency issues.

Findings

Derived a general one-loop amplitude formula for Abelian orientifolds.

Identified the role of orientifold planes in D-brane dynamics.

Explained the inconsistency of certain Z_4 models.

Abstract

We construct a one loop amplitude for any Abelian orientifold point group for arbitary complex dimensions. From this we show several results for orientifolds in this general class of models as well as for low dimensional compactifications. We also discuss the importance and structure of the contribution of orientifold planes to the dynamics of D-branes, and give a physical explaination for the inconsistency of certain Z_4 models as discovered by Zwart.