Chern-Simons-like action induced radiatively in General Relativity

Details Chern-Simons-like action induced radiatively in General Relativity Chern-Simons-like action induced radiatively in General Relativity

2004-03-21

arxiv.org/abs/hep-th/0403205v2

Phys.Rev. D70 (2004) 024014

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 10 figures, minor typos fixed

Scientific paper

10.1103/PhysRevD.70.024014

The Chern-Simons-like gravitational action is evaluated explicitly in four dimensional space-time by radiative corrections at one-loop level. The calculation is performed in fermionic sector where the Dirac fermions interact with the background gravitational field, including the parity-violating term \bar\psi \bs\gamma_5\psi. The investigation takes into account the weak field approximation and dimensional regularization scheme.

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