Tadpole Cancellation in Unoriented Liouville Theory

Details Tadpole Cancellation in Unoriented Liouville Theory Tadpole Cancellation in Unoriented Liouville Theory

2003-09-05

arxiv.org/abs/hep-th/0309063v4

JHEP 0311 (2003) 017

Physics

High Energy Physics

High Energy Physics - Theory

12 pages; v2: sign error in the crosscap state is corrected, some related argumets are modified and clarified; v3: minor corre

Scientific paper

10.1088/1126-6708/2003/11/017

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.

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