4.3 Article

Two-field Born-Infeld with diverse dualities

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NUCLEAR PHYSICS B
卷 912, 期 -, 页码 305-326

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DOI: 10.1016/j.nuclphysb.2016.06.027

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  1. Scuola Normale Superiore
  2. INFN
  3. Enrico Fermi Center

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We elaborate on how to build, in a systematic fashion, two-field Abelian extensions of the Born-Infeld Lagrangian. These models realize the non-trivial duality groups that are allowed in this case, namely U(2), SU(2) and U(1) x U(1). For each class, we also construct an explicit example. They all involve an overall square root and reduce to the Born-Infeld model if the two fields are identified, but differ in quartic and higher interactions. The U(1) x U(1) and SU(2) examples recover some recent results obtained with different techniques, and we show that the U(1) x U(1) model admits an N = 1supersymmetric completion. The U(2) example includes some unusual terms that are not analytic at the origin of field space. (C) 2016 The Author(s). Published by Elsevier B.V.

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