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On the M-theory Interpretation of Orientifold Planes

Eric G. Gimon

Abstract

We obtain an M--theory interpretation of different IIA orientifold planes by compactifying them on a circle and use a chain of dualities to get a new IIA limit of these objects using this circle as the eleventh dimension. Using the combination of the two IIA description, we give an interpretation for all orientifold four-planes in M-theory, including a mechanism for freezing M5-branes at singularities.

On the M-theory Interpretation of Orientifold Planes

Abstract

We obtain an M--theory interpretation of different IIA orientifold planes by compactifying them on a circle and use a chain of dualities to get a new IIA limit of these objects using this circle as the eleventh dimension. Using the combination of the two IIA description, we give an interpretation for all orientifold four-planes in M-theory, including a mechanism for freezing M5-branes at singularities.

Paper Structure

This paper contains 9 sections, 11 equations, 4 figures.

Table of Contents

  1. Introduction
  2. The 9-11 flip
  3. Orientifold four-planes with orthogonal groups
  4. The $O4^-$ plane
  5. The $O4^0$ plane
  6. Orientifold four-planes with symplectic groups
  7. The $O4^+$ plane with $I = 0$
  8. The $O4^+$ plane with $I= \pi$
  9. conclusions

Figures (4)

  • Figure 1: 9-11 flip for the $O4^-$ plane
  • Figure 2: 9-11 flip for the $O4^0$ plane
  • Figure 3: 9-11 flip for the $O4^+$ plane with trivial $U(1)_{RR}$ bundle
  • Figure 4: 9-11 flip for the $O4^+$ plane with non-trivial $U(1)_{RR}$ bundle