From the 1 of 5 linked papers with an AI index.
5 papers
A Periodically Interacting Dark Sector: Signatures and Constraints from CMB and Cosmic Expansion Data
Marco Antonio Cardoso Alvarez, Micol Benetti, Leila Graef +1
The paper proposes a cosmological model where the interaction between dark matter and dark energy oscillates in sign over time, representing the back‑reaction of super‑Hubble fluct…
Sound Speed Resonance in the Gravitational Wave Background as a probe for non-standard early universe cosmologies
Igor de O. C. Pedreira, Amara Ilyas, Ziwei Wang +2
Gravitational waves constitute a powerful probe of the underlying theory of gravity. In extensions of general relativity, additional degrees of freedom, such as scalar fields in th…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…
Back-Reaction of Super-Hubble Fluctuations, Late Time Tracking and Recent Observational Results
Marco Antonio Cardoso Alvarez, Leila Graef, Robert Brandenberger
Previous studies suggested that the back-reaction of super-Hubble cosmological fluctuations could lead to a dynamical relaxation of the cosmological constant. Moreover, this mechan…
Quantum geometric formulation of Brans-Dicke theory for Bianchi I spacetime
Manabendra Sharma, Gustavo S. Vicente, Leila L. Graef +2
This paper investigates Bianchi I spacetimes within the Jordan frame of Brans-Dicke theory, incorporating the framework of effective loop quantum gravity. After developing general…