Article

# Higher Derivative Brane Couplings from T-Duality

07/2010; DOI:doi:10.1007/JHEP09(2010)029
Source: arXiv

ABSTRACT 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 spacetime curvature tensor. Consistency with T-duality implies that the branes should also have four-derivative couplings that involve the NS-NS B-field. We use T-duality to predict some of these couplings. We then confirm these results with string worldsheet computations by evaluating disc amplitudes with insertions of one R-R and two NS-NS vertex operators. Comment: 30 pages, 1 figure, references added

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### Keywords

Consistency

couplings

disc amplitudes

higher derivative corrections

insertions

NS-NS vertex operators

Ramond-Ramond potential

references

spacetime curvature tensor

Wess-Zumino coupling