Running vacuum in Brans & Dicke theory: A possible cure for the σ8 and H0 tensions
J de Cruz Pérez, JS Peracaula - Physics of the Dark Universe, 2024 - Elsevier
Extensions of the gravitational framework of Brans & Dicke (BD) are studied by considering
two different scenarios:(i)'BD-Λ CDM', in which a rigid cosmological constant, Λ, is included …
two different scenarios:(i)'BD-Λ CDM', in which a rigid cosmological constant, Λ, is included …
Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with Λ (t) CDM cosmology
This paper explores models of the FLRW universe that incorporate a time-varying
cosmological term Λ (t). Specifically, we assume a power-law form for the cosmological term …
cosmological term Λ (t). Specifically, we assume a power-law form for the cosmological term …
Running vacuum in Brans-Dicke theory: a possible cure for the and tensions
JC Perez, JS Peracaula - arXiv preprint arXiv:2302.04807, 2023 - arxiv.org
Extensions of the gravitational framework of Brans-Dicke (BD) are studied by considering
two different scenarios: i)BD-$\Lambda $ CDM', in which a rigid cosmological constant …
two different scenarios: i)BD-$\Lambda $ CDM', in which a rigid cosmological constant …
[HTML][HTML] Spherically Symmetric Configurations in Unimodular Gravity
Unimodular gravity (UG) is often deemed comparable to General Relativity (GR) in many
respects, despite the theory exhibiting invariance under a more limited set of diffeomorphic …
respects, despite the theory exhibiting invariance under a more limited set of diffeomorphic …
[HTML][HTML] Model for Origin and Modification of Mass and Coupling Constant
YJ Chen, SL Li, YY Liu, X Gu, WD Li, WS Dai - Universe, 2023 - mdpi.com
We build a model of the origin of physical constants, including masses and coupling
constants. We consider the quantum correction of masses and coupling constants. Some …
constants. We consider the quantum correction of masses and coupling constants. Some …