2 papers
astro-ph.CO2020
Ricci-inverse gravity: a novel alternative gravity, its flaws, and how to cure them
Luca Amendola, Leonardo Giani, Giorgio Laverda
We introduce a novel theory of gravity based on the inverse of the Ricci tensor, that we call the anticurvature tensor. We derive the general equations of motion for any Lagrangian…
gr-qc2020
Transient weak gravity in scalar-tensor theories
Manuel Wittner, Giorgio Laverda, Oliver F. Piattella +1
Sub-horizon perturbations in scalar-tensor theories have been shown to grow generically faster than in uncoupled models due to a positive, additive Yukawa force. In such cases, the…