Speaker
Valerio Faraoni
Description
In the ultralocal limit along timelike geodesics, any geometry is perceived as Bianchi I. It is shown that, in general, this limit does not extend to non-geodesic timelike observers. We discuss exceptions, including particles with variable mass, test particles in Einstein frame scalar-tensor gravity, and self-interacting dark matter.
[Based on R. Saadati, L. Valsan & V. Faraoni 2025, Eur. Phys. J. C 85, 176 (arXiv:2408.00871)]
| Keyword-1 | ultralocal limit |
|---|---|
| Keyword-2 | non-geodesic observer |
Author
Valerio Faraoni
Co-authors
Luca Valsan
(McGill University)
Reza Saadati
(Bishop's University)
