Anomalies of minimal N = (0,1) and N = (0,2) sigma models on homogeneous spaces
2017 | journal article. A publication with affiliation to the University of Göttingen.
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Anomalies of minimal N = (0,1) and N = (0,2) sigma models on homogeneous spaces
Chen, J.; Cui, X.; Shifman, M. & Vainshtein, A. (2017)
Journal of Physics A Mathematical and Theoretical, 50(2) art. 025401. DOI: https://doi.org/10.1088/1751-8121/50/2/025401
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- Authors
- Chen, Jin; Cui, Xiaoyi; Shifman, Mikhail; Vainshtein, Arkady
- Abstract
- We study chiral anomalies in N=(0,1) and (0,2) two-dimensional minimal sigma models defined on generic homogeneous spaces G/H . Such minimal theories contain only (left) chiral fermions and in certain cases are inconsistent because of "incurable" anomalies. We explicitly calculate the anomalous fermionic effective action and show how to remedy it by adding a series of local counter-terms. In this procedure, we derive a local anomaly matching condition, which is demonstrated to be equivalent to the well-known global topological constraint on p(1) (G/H) . More importantly, we show that these local counter-terms further modify and constrain "curable" chiral models, some of which, for example, flow to nontrivial infrared superconformal fixed point. Finally, we also observe an interesting relation between N=(0,1) and (0,2) two-dimensional minimal sigma models and supersymmetric gauge theories
- Issue Date
- 2017
- Journal
- Journal of Physics A Mathematical and Theoretical
- Organization
- Mathematisches Institut
- ISSN
- 1751-8121; 1751-8113