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# N = 2 Strings and the Twistorial Calabi-yau

@inproceedings{Vafa2004N2, title={N = 2 Strings and the Twistorial Calabi-yau}, author={Cumrun Vafa}, year={2004} }

- Published 2004

We argue that open N = 2 string theory on spacetime with signature (2, 2), when covariantized with respect to SO(2, 2) and supersymmetrized a la Siegel, becomes equivalent to the topological A model on CP 3|4 with branes wrapped on RP 3|4. World-sheet instantons ending on the branes deform the self-dual Yang-Mills to ordinary Yang-Mills. Moreover, we propose that mirror symmetry may explain the recent observation of Witten that the twistor transformed amplitudes of N = 4 supersymmetric Yang… CONTINUE READING

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