Extended Holomorphic Anomaly and Loop Amplitudes in Open Topological String

Details Extended Holomorphic Anomaly and Loop Amplitudes in Open Topological String Extended Holomorphic Anomaly and Loop Amplitudes in Open Topological String

2007-05-29

arxiv.org/abs/0705.4098v4

Physics

High Energy Physics

High Energy Physics - Theory

56 pages, 6+ figures, v2,v3: refs added, v4: numerical predictions retracted

Scientific paper

10.1016/j.nuclphysb.2009.02.006

Open topological string amplitudes on compact Calabi-Yau threefolds are shown to satisfy an extension of the holomorphic anomaly equation of Bershadsky, Cecotti, Ooguri and Vafa. The total topological charge of the D-brane configuration must vanish in order to satisfy tadpole cancellation. The boundary state of such D-branes is holomorphically captured by a Hodge theoretic normal function. Its Griffiths' infinitesimal invariant is the analogue of the closed string Yukawa coupling and plays the role of the terminator in a Feynman diagram expansion for the topological string with D-branes. The holomorphic anomaly equation is solved and the holomorphic ambiguity is fixed for some representative worldsheets of low genus and with few boundaries on the real quintic.

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