3 papers
hep-ph2026
Sensitivity forecasts for gravitational-wave detectors to dark matter decaying into gravitons
Jose A. R. Cembranos, Ãlvaro Cendal
Dark matter may not be perfectly stable, and its decay could generate distinctive gravitational-wave signatures. In this work, we present model-independent predictions for the stoc…
gr-qc2026
Effects of massive spin-2 fields on gravitational wave propagation
Jose A. R. Cembranos, Ãlvaro Cendal, Hector Villarrubia-Rojo
Massive spin-2 fields in addition to the standard massless graviton arise naturally in extensions of General Relativity, such as massive bigravity or models with extra dimensions.…
gr-qc2024
From loop quantum gravity to cosmology: the two-vertex model
Ãlvaro Cendal, Iñaki Garay, Luis J. Garay
We study the notion of volume and its dynamics in the loop-quantum-gravity truncation known as the two-vertex model. We also show that its U(N)-symmetry reduction provides the old…