Tadpole Cancellation in Unoriented Liouville Theory
High Energy Physics - Theory
2009-11-10 v4
Abstract
The tadpole cancellation in the unoriented Liouville theory is discussed. Using two different methods -- the free field method and the boundary-crosscap state method, we derive one-loop divergences. Both methods require two D1-branes with the symplectic gauge group to cancel the orientifold tadpole divergence. However, the finite part left is different in each method and this difference is studied. We also discuss the validity of the free field method and the possible applications of our result.
Cite
@article{arxiv.hep-th/0309063,
title = {Tadpole Cancellation in Unoriented Liouville Theory},
author = {Yu Nakayama},
journal= {arXiv preprint arXiv:hep-th/0309063},
year = {2009}
}
Comments
12 pages; v2: sign error in the crosscap state is corrected, some related argumets are modified and clarified; v3: minor corrections; v4:reference added