https://doi.org/10.1140/epjc/s10052-017-5233-7
Regular Article - Theoretical Physics
Fab Four self-interaction in quantum regime
1
Bogoliubov Laboratory for Theoretical Physics, JINR, Dubna, 141980, Russia
2
Dubna State University, Universitetskaya str. 19, Dubna, Moscow Region, 141980, Russia
* e-mail: latosh@gmail.com
Received:
15
June
2017
Accepted:
12
September
2017
Published online:
24
October
2017
Quantum behavior of the John Lagrangian from the Fab Four class of covariant Galileons is studied. We consider one-loop corrections to the John interaction due to cubic scalar field interaction. Counter terms are calculated, one appears because of massless scalar field theory infrared issues, another one lies in the George class, and the rest of them can be reduced to the initial Lagrangian up to surface terms. The role of quantum corrections in the context of cosmological applications is discussed.
© The Author(s), 2017