Regular Article - Theoretical Physics
Effective action from the functional renormalization group
Department of Physics, Kindai University, 577-8502, Higashi-Osaka, Osaka, Japan
2 Department of Nuclear Physics and Physical Engineering, Czech Technical University, Břehova 7, 11519, Prague, Czech Republic
Accepted: 4 August 2020
Published online: 22 September 2020
We study the quantum gravitational system coupled to a charged scalar, Dirac fermions, and electromagnetic fields. We use the “exact” or “functional” renormalization group equation to derive the effective action by integrating the flow equation from the ultraviolet scale down to . The resulting effective action consists of local terms and nonlocal terms with unique coefficients.
© The Author(s) 2020
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Funded by SCOAP3