Abstract
We give simple examples of weakly coupled or free quantum mechanical systems that exhibit scale invariance with an anomalous dimension for a conserved current. In these models scaling as an exact symmetry only emerges in a large N limit, but it remains as an approximate symmetry even at finite N.
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ArXiv ePrint: 1504.02478
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Karch, A. Multiband models for field theories with anomalous current dimension. J. High Energ. Phys. 2015, 21 (2015). https://doi.org/10.1007/JHEP07(2015)021
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DOI: https://doi.org/10.1007/JHEP07(2015)021