Speaker
Description
Asymptotically safe quantum gravity has shown remarkable success when coupled to matter, notably yielding a successful postdiction of the top quark mass when the quantum gravity scale is identified with the Planck scale, a natural choice in a fundamental realization of Asymptotic Safety. This success raises the possibility that, even if not fundamental, asymptotically safe gravity may emerge as an effective description within a more fundamental theory. In such a scenario, the notion of scale becomes central.
Starting from the postdiction of the top-quark mass, we explore different notions of physical scales, investigating how the regime of validity of Quantum Field Theory connects to the fixed-point scale, the species scale, and the scale of a potential underlying theory. We further analyze how this interplay depends on the matter content, revealing a nontrivial and surprising structure.
| Affiliation | Niels Bohr Institute, University of Copenhagen |
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| Career status | PhD student |