299 citations · 442 across the 12 of their papers we have counts for
12 papers
21-cm Brightness Temperature in a Unified-Dark-Sector Horndeski Theory
Bertha Cuadros-Melgar, Thanasis Karakasis, Eleftherios Papantonopoulos +1
We investigate the impact of scalar-tensor theories on the 21cm brightness temperature. We consider a specific model in Horndeski scalar-tensor theory in which dark matter and dark…
Modified Teleparallel Gravity, DESI BAO and the Tension
Mariam Bouhmadi-López, Carlos G. Boiza, Maria Petronikolou +1
We investigate whether late-time modifications of gravity in the teleparallel framework can impact the current tension in the Hubble constant , focusing on cosmology as…
Addressing and tensions within cosmology
Carlos G. Boiza, Maria Petronikolou, Mariam Bouhmadi-López +1
We investigate the viability of gravity as an alternative framework to address the and tensions in cosmology. Focusing on three representative models, we…
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.…
Modified cosmology though spacetime thermodynamics and generalized mass-to-horizon entropy
Spyros Basilakos, Andreas Lymperis, Maria Petronikolou +1
In this work we apply the gravity-thermodynamics approach for the case of generalized mass-to-horizon entropy, which is a two-parameter extension of Bekenstein-Hawking entropy that…
Observational implications of Wald-Gauss-Bonnet topological dark energy
Maria Petronikolou, Fotios K. Anagnostopoulos, Stylianos A. Tsilioukas +2
We investigate the observational implications of Wald--Gauss--Bonnet (WGB) topological dark energy, a modified cosmological framework derived from the gravity-thermodynamics conjec…
Barrow holographic dark energy with varying exponent
Spyros Basilakos, Andreas Lymperis, Maria Petronikolou +1
We construct Barrow holographic dark energy with varying exponent. Such an energy-scale-dependent behavior is typical in quantum field theory and quantum gravity under renormalizat…
Alleviating tension in scalar-tensor and bi-scalar-tensor theories
Maria Petronikolou, Emmanuel N. Saridakis
We investigate scalar-tensor and bi-scalar-tensor modified theories of gravity that can alleviate the tension. In the first class of theories we show that choosing particular…
Alleviating both and tensions in Tsallis cosmology
Spyros Basilakos, Andreas Lymperis, Maria Petronikolou +1
We present how Tsallis cosmology can alleviate both and tensions simultaneously. Such a modified cosmological scenario is obtained by the application of the gravity-the…
Modified gravity and cosmology with nonminimal (derivative) coupling between matter and the Einstein tensor
Petros Asimakis, Spyros Basilakos, Andreas Lymperis +2
We construct new classes of modified theories in which the matter sector couples with the Einstein tensor, namely we consider direct couplings of the latter to the energy-momentum…
Alleviating Tension with New Gravitational Scalar Tensor Theories
Shreya Banerjee, Maria Petronikolou, Emmanuel N. Saridakis
We investigate the cosmological applications of new gravitational scalar-tensor theories and we analyze them in the light of tension. In these theories the Lagrangian contain…
Alleviating tension in Horndeski gravity
Maria Petronikolou, Spyros Basilakos, Emmanuel N. Saridakis
We show that the tension can be alleviated in the framework of Horndeski/generalized galileon gravity. In particular, since the terms depending on control the friction…