Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2021)180
Keywords
Extended Supersymmetry; Superspaces; Supersymmetry and Duality
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The paper presents N = 2 superconformal U(1) duality-invariant models for an Abelian vector multiplet coupled to conformal supergravity and proposes a local U(1) duality-invariant action generating the N = 2 super-Weyl anomaly. Additionally, a new derivation of the recently constructed U(1) duality-invariant N = 1 superconformal electrodynamics is provided, introducing its SL(2, R) duality-invariant coupling.
We present N = 2 superconformal U(1) duality-invariant models for an Abelian vector multiplet coupled to conformal supergravity. In a Minkowski background, such a nonlinear theory is expected to describe (the planar part of) the low-energy effective action for the N = 4 SU(N) super-Yang-Mills (SYM) theory on its Coulomb branch where (i) the gauge group SU(N) is spontaneously broken to SU( N - 1) x U(1); and (ii) the dynamics is captured by a single N = 2 vector multiplet associated with the U(1) factor of the unbroken group. Additionally, a local U(1) duality-invariant action generating the N = 2 super-Weyl anomaly is proposed. By providing a new derivation of the recently constructed U(1) duality-invariant N = 1 superconformal electrodynamics, we introduce its SL(2, R) duality-invariant coupling to the dilaton-axion multiplet.
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