Non-perturbative Nekrasov partition function from string theory

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• 作者：I. Antoniadis ; I. Florakis ; S. Hohenegger ; K.S. Narain ; A. Zein Assi
• 刊名：Nuclear Physics B
• 出版年：March, 2014
• 年：2014
• 卷：880
• 期：Complete
• 页码：87-108
• 全文大小：371 K

文摘

We calculate gauge instanton corrections to a class of higher derivative string effective couplings introduced in . We work in Type I string theory compactified on and realise gauge instantons in terms of D5-branes wrapping the internal space. In the field theory limit we reproduce the deformed ADHM action on a general 惟-background from which one can compute the non-perturbative gauge theory partition function using localisation. This is a non-perturbative extension of and provides further evidence for our proposal of a string theory realisation of the 惟-background.