High Energy Theory Seminar

25 February 2011

Katrin Becker (TAMU)

Higher derivative D-brane couplings from T-duality and scattering amplitudes


The Wess-Zumino coupling on D-branes in string theory is known to receive higher derivative corrections which couple the Ramond-Ramond potential to terms involving the square of the space-time curvature tensor. Consistency with T-duality implies that the brane action should also contain four-derivative couplings that involve the NS-NS B-field. T-duality is used to predict some of these couplings. Then I will describe string world-sheet computations which confirm the predicted couplings.

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