4 papers
Critical Coupling Surfaces in Gravity: Regularity, Gravitational Screening, and Phase Transitions
Ginés R. Pérez Teruel
We investigate the critical regime in gravity. While most studies assume a non-vanishing effective gravitational coupling, the existence of critical hypersurfac…
Geometric Constraints on Quantum Gravity-Inspired Dispersion Relations
Gines R. Perez Teruel
Modified dispersion relations (MDRs) arise in many quantum-gravity approaches, often in non-polynomial or non-analytic form beyond the reach of effective field theory (EFT). Logari…
A Modified Gravitational Theory of the Matter Sector of the Type
Gines R. Pérez Teruel, Antonio Peña Peña
We investigate a modified gravity framework where the geometric Einstein--Hilbert sector remains untouched while the matter Lagrangian is weighted by a nontrivial function o…
gravity
Ginés R. Pérez Teruel
In this note we explore a modified theory of gravitation that is not based on the least action principle, but on a natural generalization of the original Einstein's field equations…