Speaker
Dr
Marine Samsonyan
(CERN)
Description
We present a D-brane realisation of the (non-)Abelian $\mathscr{N}=2^*$ theory. For $\Omega$ deformation we compute suitable topological amplitudes in this setup. These amplitudes are expressed as a double series expansion. The coefficients determine couplings of higher-dimensional operators in the effective supergravity action that involve powers of the anti-self-dual $\mathscr{N}=2$ chiral Weyl superfield and of self-dual gauge field strengths superpartners of the D5-brane coupling modulus. In the field theory limit, as it is expected, the result reproduces the Nekrasov partition function in the two-parameter $\Omega$-background.
Authors
Dr
Marine Samsonyan
(CERN)
Prof.
Carlo Angelantonj
(University of Torino)
Prof.
Ignatios Antoniadis
(LPTHE, CNRS UMR 7589, Albert Einstein Center for Fundamental Physics, ITP)
