Gauge theory in deformed N = (1, 1) superspace

I. L. Buchbinder, E. A. Ivanov, O. Lechtenfeld, I. B. Samsonov, B. M. Zupnik

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)


    We review the non-anticommutative Q-deformations of N = (1, 1) supersymmetric theories in four-dimensional Euclidean harmonic superspace. These deformations preserve chirality and harmonic Grassmann analyticity. The associated field theories arise as a low-energy limit of string theory in specific backgrounds and generalize the Moyal-deformed supersymmetric field theories. A characteristic feature of the Q-deformed theories is the half-breaking of supersymmetry in the chiral sector of the Euclidean superspace. Our main focus is on the chiral singlet Q-deformation, which is distinguished by preserving the SO(4) ∼ Spin(4) "Lorentz" symmetry and the SU(2) R-symmetry. We present the superfield and component structures of the deformed N = (1, 0) supersymmetric gauge theory as well as of hypermultiplets coupled to a gauge superfield: invariant actions, deformed transformation rules, and so on. We discuss quantum aspects of these models and prove their renormalizability in the Abelian case. For the charged hypermultiplet in an Abelian gauge superfield background we construct the deformed holomorphic effective action.

    Original languageEnglish
    Pages (from-to)759-797
    Number of pages39
    JournalPhysics of Particles and Nuclei
    Issue number5
    Publication statusPublished - 1 Sep 2008

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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