Abstract
We compute scaling solutions of functional flow equations for quantum grav- ity in a general truncation with up to four derivatives of the metric. They connect the asymptotically free ultraviolet fixed point, which is accessible to perturbation theory, to the non-perturbative infrared region. The existence of such scaling solutions is necessary for a renormalizable quantum field theory of gravity. If the proposed scaling solution is con- firmed beyond our approximations asymptotic freedom is a viable alternative to asymptotic safety for quantum gravity.
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Sen, S., Wetterich, C. & Yamada, M. Scaling solutions for asymptotically free quantum gravity. J. High Energ. Phys. 2023, 54 (2023). https://doi.org/10.1007/JHEP02(2023)054
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DOI: https://doi.org/10.1007/JHEP02(2023)054