The derivative expansion in asymptotically safe quantum gravity: general setup and quartic order
High Energy Physics - Theory
2021-07-22 v2 General Relativity and Quantum Cosmology
Abstract
We present a general framework to systematically study the derivative expansion of asymptotically safe quantum gravity. It is based on an exact decoupling and cancellation of different modes in the Landau limit, and implements a correct mode count as well as a regularisation based on geometrical considerations. It is applicable independent of the truncation order. To illustrate the power of the framework, we discuss the quartic order of the derivative expansion and its fixed point structure as well as physical implications.
Cite
@article{arxiv.2104.11336,
title = {The derivative expansion in asymptotically safe quantum gravity: general setup and quartic order},
author = {Benjamin Knorr},
journal= {arXiv preprint arXiv:2104.11336},
year = {2021}
}
Comments
48 pages, 3 figures; v2: added some clarifications, removed typos