3 papers
astro-ph.CO2025
Reconstruction of the swampland conjectures with DESI DR1 BAO data
Rubén Arjona, Savvas Nesseris
The swampland conjectures (SCs) propose constraints on effective field theories that can arise from a consistent theory of quantum gravity. Two prominent SCs suggest that the scala…
astro-ph.CO2024
Comparative analysis of the NANOgrav Hellings-Downs as a window into new physics
Rubén Arjona, Savvas Nesseris, Sachiko Kuroyanagi
Pulsar timing array (PTA) experiments have recently provided strong evidence for the signal of the stochastic gravitational wave background (SGWB) in the nHz-frequency band. These…
astro-ph.CO2024
Probing CDM through the Weyl potential and machine learning forecasts
Rubén Arjona, Savvas Nesseris, Isaac Tutusaus +2
For years, the cosmological constant and cold dark matter (CDM) model () has stood as a cornerstone in modern cosmology and serves as the predominant theoretical…