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N=2 string amplitudes and the Omega background

2014/02/12 by Ioannis Florakis, Florakis, Ioannis, Ahmad Zein Assi +1
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Noncommutative and Quantum Gravity Theories #Particle physics theoretical and experimental studies #hep-th

paper · pdf · doi:10.48550/arxiv.1402.2974

11 pages

arxiv created 2014/02/12 · openalex publication_date 2014/02/12 · arxiv updated 2014/02/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 N=2 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. Presented by the authors at the Corfu Summer Institute 2013 "Workshop on Noncommutative Field Theory and Gravity", September 8-15, 2013 Corfu, Greece

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