Speaker
Fabian Wagner
(Heidelberg University)
Description
Scalar-tensor theories are ubiquitous in cosmology. Asymptotic safety offers a guiding principle to significantly shrink the available theory space. At the same time, cosmological observables provide a stringent test of the asymptotic-safety paradigm. Focusing on Horndeski models of dark energy, I show how simple models fail to meet both observational constraints and constraints from asymptotic safety. With many observations still unaccounted for, I conclude with a perspective on the rich road ahead.
| Affiliation | Institute for theoretical physics, Heidelberg University |
|---|---|
| Link to paper | https://iopscience.iop.org/article/10.1088/1475-7516/2023/02/052 |
| Career status | Postdoc |
Author
Fabian Wagner
(Heidelberg University)
Co-authors
Astrid Eichhorn
Rafael Robson Lino dos Santos
(NCBJ, Warsaw)