3 papers
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…
math-ph2018
Stochastic quantization of massive fermions
A. N. Efremov
We consider a general solution of the Langevin equation describing massive fermions to an appropriate boundary problem. Assuming existence of such solution we show that its correla…
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…