29 citations · 66 across the 7 of their papers we have counts for
7 papers
The NANOGrav 15 yr Data Set: Running of the Spectral Index
Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +102
The NANOGrav 15-year data provides compelling evidence for a stochastic gravitational-wave (GW) background at nanohertz frequencies. The simplest model-independent approach to char…
Generators of the Poincaré Group for arbitrary tensors and spinor-tensors
H. V. Almeida Silva, D. Dalmazi, R. R. Lino dos Santos +1
In this work, we systematically derive explicit expressions for the Poincaré Group generators on arbitrary-rank tensors and spinor-tensors in and spacetimes, thus g…
From quantum gravity to gravitational waves through cosmic strings
Astrid Eichhorn, Rafael R. Lino dos Santos, João Lucas Miqueleto
New physics beyond the Standard Model can give rise to stochastic gravitational-wave backgrounds, for example through cosmic strings. In this way, gravitational-wave searches with…
Shift-symmetric Horndeski gravity in the asymptotic-safety paradigm
Astrid Eichhorn, Rafael R. Lino dos Santos, Fabian Wagner
Horndeski gravity is a popular contender for a phenomenological model of dynamical dark energy, and as such subject to observational constraints. In this work, we ask whether Hornd…
Gravitational waves from the early universe
Rafael R. Lino dos Santos, Linda M. van Manen
Even though different models could already be constrained using CMB data, these models remained unconstrained at higher frequency scales, and, therefore, the knowledge of new physi…
Are there ALPs in the asymptotically safe landscape?
Gustavo P. de Brito, Astrid Eichhorn, Rafael R. Lino dos Santos
We investigate axion-like particles (ALPs) in the context of asymptotically safe gravity-matter systems. The ALP-photon interaction, which facilitates experimental searches for ALP…
The weak-gravity bound and the need for spin in asymptotically safe matter-gravity models
Gustavo P. de Brito, Astrid Eichhorn, Rafael Robson Lino dos Santos
We discover a weak-gravity bound in scalar-gravity systems in the asymptotic-safety paradigm. The weak-gravity bound arises in these systems under the approximations we make, when…