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19932026
most citedThe Gaia mission

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gr-qc2026

Hubble tension problem encompassed by phase-space quantum cosmology

Alex E. Bernardini

Analytical solutions encompassing the so-called Hubble tension problem are revisited through the framework of Weyl--Wigner quantum mechanics and discussed in the context of general…

gr-qc2026

On dark sector scalar field theories driven by cosmological -fields

Alex E. Bernardini, Orfeu Bertolami

The interplay of Hoyle-Narlikar (HN) creation field cosmology and scalar field models for the dark sector, including the generalized Chaplygin Gas (GCG), is investigated . Though o…

gr-qc2026

Lagrangian Identity and Mass Evolution of Particle-like Objects in Nonminimally Coupled Gravity

S. R. Pinto, P. P. Avelino

We show that the Lagrangian of a Nambu-Goto -brane satisfies the identity , with denoting the trac…

gr-qc2025

Cosmological and lunar laser ranging constraints on evolving dark energy in a nonminimally coupled curvature-matter gravity model

Riccardo March, Miguel Barroso Varela, Orfeu Bertolami +3

We analyze a cosmological solution to the field equations of a modified gravity model where curvature and matter are nonminimally coupled. The current Universe's accelerated expans…

gr-qc2025

Accretion of Generalized Chaplygin Gas onto Cosmologically Coupled Black Holes

Luis F. Reis, Mario C. Baldiotti, Orfeu Bertolami

We study the accretion of cosmic dark fluids, responsible for driving the accelerated expansion of the universe, onto cosmologically coupled black holes. More specifically, we focu…

gr-qc2025

Cosmologically Viable Solutions in Geometric Modified Gravity

P. A. G. Monteiro, C. J. A. P. Martins

The discovery of the accelerated expansion of the universe highlighted General Relativity's inability to naturally account for dark energy without invoking a finely tuned cosmologi…