nLab duality between type I and heterotic string theory

Idea

one of the dualities in string theory: between type I string theory and heterotic string theory

(…)

Properties

Gauge group

For type I string theory on flat target spacetime orientifolds $\mathbb{R}^{9,1}$ RR-field tadpole cancellation requires 32 D-branes to cancel the O-plane charge of -32 (here).

Under the duality between type I and heterotic string theory this translates to the semi-spin gauge group SemiSpin(32) of heterotic string theory.

References

• Arkady Tseytlin, Heterotic - type I superstring duality and low-energy effective actions, Nucl.Phys.B467:383-398, 1996 (arXiv:hep-th/9512081)

• Oren Bergman, Matthias Gaberdiel, G. Lifschytz, String Creation and Heterotic-Type I’ Duality, Nucl. Phys. B524 (1998) 524-544 (arXiv:hep-th/9711098)

• I. Antoniadis, H. Partouche, T.R. Taylor, Lectures on Heterotic-Type I Duality, Nucl.Phys.Proc.Suppl. 61A (1998) 58-71 (arXiv:hep-th/9706211)

See also

• K. Foerger, On Heterotic/Type I Duality in d=8 (arXiv:hep-th/9812154)