GeomGravX: 10 Years of Geometric Foundations of Gravity and eXtensions (in Tartu)

Session

Monday Parallel A1

29 Jun 2026, 13:30

78. Francesca Spinato: Canonical and non-canonical symmetries in f(R) cosmology

29/06/2026, 13:30

The f(R)-gravity represents the most straightforward extension of the General Relativity. Among the different possible formulations, the starting action can be selected using the Noether symmetry approach, a phisically motivated criterion based on Noether's theorem aimed at identifying viable models that exhibit symmetries. An advantage in applying such an approach is the reduction of the...

79. Margarida Lima: Non–Minimally Coupled Weyl Connection Gravity: Cosmological Perturbations

29/06/2026, 13:55

1

In Non-Minimally Coupled Weyl Connection Gravity the spacetime geometry is not fully determined by the metric alone, but also involves the Weyl connection characterized by an independent non-metricity vector. As a result, the gravitational sector is enriched by a dynamical vector field, which contributes to the field equations and modifies the curvature terms. This model also introduces an...

80. Mahmoud Hashim: Clustered unified dark sector cosmology

29/06/2026, 14:20

We consider unified dark sector models in which the fluid can collapse and cluster into halos, allowing for hierarchical structure formation to proceed as in standard cosmology. We show that both background evolution and linear perturbations tend toward those in Λ cold dark matter (ΛCDM) as the clustered fraction f→1. We confront such models with various observational datasets, with emphasis...

81. Orest Hrycyna: Two Structually unstable FLRW models and a new non-hyperbolic de Siter attractor

29/06/2026, 14:45

TBA