arXiv subjects

Luca Valsan

Publications and source records attributed to Luca Valsan.

2 recordsLinked to original sources

arXiv2025

Forces parallel to particle trajectories in relativistic gravity

Forces parallel to particle trajectories occur in physically meaningful situations, including relativistic cosmology and Einstein frame scalar-tensor gravity. These situations have Newtonian analogues that we discuss to provide intuition about the underlying physics.

gr-qc↗

arXiv2024

Non-geodesic timelike observers and the ultralocal limit

The ultralocal limit along timelike geodesics, in which any geometry reduces to Bianchi I, does not extend to non-geodesic timelike observers. Exceptions are discussed, including particles with variable mass, test particles in Einstein frame scalar-tensor gravity, and self-interacting dark matter.

gr-qc↗