Abstract
We consider marginal deformations of the superconformal ABJM/ABJ models which preserve \( \mathcal{N} = 2 \) supersymmetry. We determine perturbatively the spectrum of fixed points and study their infrared stability. We find a closed line of fixed points which is IR stable. The fixed point corresponding to the ABJM/ABJ models is stable under marginal deformations which respect the original SU(2) A × SU(2) B invariance, while deformations which break this group destabilize the theory which then flows to a less symmetric fixed point. We discuss the addition of flavor degrees of freedom. We prove that in general a flavor marginal superpotential does not destabilize the system in the IR. An exception is represented by a marginal coupling which mixes matter charged under different gauge sectors. Finally, we consider the case of relevant deformations which should drive the system to a strongly coupled IR fixed point recently investigated in arXiv:0909.2036 [hep-th].
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M.S. Bianchi, S. Penati and M. Siani, in preparation.
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ArXiv ePrint: 0910.5200
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Bianchi, M.S., Penati, S. & Siani, M. Infrared stability of ABJ-like theories. J. High Energ. Phys. 2010, 80 (2010). https://doi.org/10.1007/JHEP01(2010)080
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DOI: https://doi.org/10.1007/JHEP01(2010)080