Why are fractional charges of orientifolds compatible with Dirac quantization?

Yuji Tachikawa, Kazuya Yonekura

Research output: Contribution to journalArticlepeer-review

Abstract

Orientifold p-planes with p ≤ 4 have fractional Dp-charges, and therefore appear inconsistent with Dirac quantization with respect to D(6-p)-branes. We explain in detail how this issue is resolved by taking into account the anomaly of the worldvolume fermions using the η invariants. We also point out relationships to the classification of interacting fermionic symmetry protected topological phases. In an appendix, we point out that the duality group of type IIB string theory is the pin+ version of the double cover of GL(2;Z).

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2018 May 7

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Why are fractional charges of orientifolds compatible with Dirac quantization?'. Together they form a unique fingerprint.

Cite this