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hep-th2021
Non-linear sigma models on constant curvature target manifolds: a functional renormalization group approach
Alexander N. Efremov, Adam Rançon
We study non-linear sigma models on target manifolds with constant (positive or negative) curvature using the functional renormalization group and the background field method. We p…
hep-th2018
The gluon condensate in an effective SU(2) Yang-Mills theory
A. N. Efremov
We make progress towards a derivation of a low energy effective theory for SU(2) Yang-Mills theory. This low energy action is computed to 1-loop using the renormalization group tec…