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hep-th2014
High-Gradient Operators in the psl(2|2) Gross-Neveu Model
Alessandra Cagnazzo, Volker Schomerus, Václav Tlapák
It has been observed more than 25 years ago that sigma model perturbation theory suffers from strongly RG-relevant high-gradient operators. The phenomenon was first seen in 1-loop…
hep-th2014★ 9 cited
On the Spectrum of Superspheres
Alessandra Cagnazzo, Volker Schomerus, Vaclav Tlapak
Sigma models on coset superspaces, such as odd dimensional superspheres, play an important role in physics and in particular the AdS/CFT correspondence. In this work we apply recen…