Abstract
We investigate the integrable Yang-Baxter deformation of the 2d Principal Chiral Model with a Wess-Zumino term. For arbitrary groups, the one-loop β-functions are calculated and display a surprising connection between classical and quantum physics: the classical integrability condition is necessary to prevent new couplings being generated by renormalisation. We show these theories admit an elegant realisation of Poisson-Lie T-duality acting as a simple inversion of coupling constants. The self-dual point corresponds to the Wess-Zumino-Witten model and is the IR fixed point under RG. We address the possibility of having supersymmetric extensions of these models showing that extended supersymmetry is not possible in general.
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Demulder, S., Driezen, S., Sevrin, A. et al. Classical and quantum aspects of Yang-Baxter Wess-Zumino models. J. High Energ. Phys. 2018, 41 (2018). https://doi.org/10.1007/JHEP03(2018)041
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DOI: https://doi.org/10.1007/JHEP03(2018)041