MSW instantons

  title={MSW instantons},
  author={Ron Y. Donagi and Martijn Wijnholt},
  journal={Journal of High Energy Physics},
A bstractWe analyze M5-instantons in F-theory, or equivalently D3-instantons with varying axio-dilaton, in the presence of 7-brane gauge groups. The chiral two-form on the M5-brane plays an important role, because it couples the M5 brane to vector multiplets and charged chiral fields. The chiral two-form does not have a semi-classical description. However if the worldvolume of the M5 admits a fibration over a curve with surface fibers, then we can reduce the worldvolume theory to an ‘MSW’ CFT… CONTINUE READING