Schwinger- Dyson Equations and Dynamical Symmetry Breaking in Quantum R^2- gravity

Shil'nov, Y. I.; Chitov, V. V.; Kotwicki, A. T.

Schwinger- Dyson Equations and Dynamical Symmetry Breaking in Quantum R^2- gravity

Authors

Shil'nov, Y. I.

Chitov, V. V.

Kotwicki, A. T.

Description

The dymamical chiral symmetry breaking in higher- derivative quantum gravity has been investigated on the flat background. The Schwinger- Dyson equations numerical solutions have been found in the ladder approximation. Both two- and four- dimensional cases have been considered. The dymamical fermion mass generation accompanied by the second- order phase transition has been shown to take place in a different gauges.
19 pages, 6 figures, LaTeX, submitted to Mod. Phys. Lett. A