Abstract
The dependence on the torsion H= db of the Wess–Zumino couplings of D-branes that are trivially embedded in space–time is studied. We show that even in this simple set-up some torsion components can be turned on, with a non-trivial effect on the RR couplings. In the special cases in which either the tangent or the normal bundle are trivial, the torsion dependence amounts to substitute the standard curvature with its generalization in the presence of torsion, in the usual couplings involving the roof genus Â.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have