\documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}$ \mathcal{N} = 2$\end{document} string amplitudes and the Omega background. Issue 9 (5th May 2014)

• Record Type: Journal Article
• Authors: Florakis, I.; Zein Assi, A.
• Other Names: Anagnostopoulos Konstantinos sponsoringEditor.; Lechtenfeld Olaf sponsoringEditor.; Lüst Dieter sponsoringEditor.; Kawai Hikaru sponsoringEditor.; Nishimura Jun sponsoringEditor.; Steinacker Harold sponsoringEditor.; Szabo Richard sponsoringEditor.; Watamura Satoshi sponsoringEditor.; Zoupanos George sponsoringEditor.
• Is Part Of: Fortschritte der Physik. Volume 62:Issue 9/10(2014)
• Page Start: 733
• Page End: 742
• Publication Date: 2014-05-05
• Subjects: Omega‐background -- Nekrasov partition function -- refined topological string.; Physics -- Periodicals; 530.05
• DOI: 10.1002/prop.201400021
• Languages: English
• ISSNs: 0015-8208

Abstract

Abstract: We review recent work [1, 2] on obtaining a realisation of the Ω‐background in terms of a special series of higher‐derivative generalised F‐terms in the effective\documentclass{article}\usepackage{amssymb}\pagestyle{empty}\begin{document}$ \mathcal{N} = 2$\end{document} supergravity action. We discuss the motivation behind the identification of these couplings, their relation to the Nekrasov partition function and connect them to a worldsheet approach towards the refined topological string.