10 papers
Unifying the Dark Sector with the New Generalized Chaplygin Gas: Observational Constraints
Abdulla Al Mamon, Andronikos Paliathanasis, Subhajit Saha
In light of recent cosmological observations, we examine a generalized Chaplygin gas model with a redshift-dependent exponent as a framework for describing the dark energy and dark…
Cosmo-PINN: A Physics-Informed Neural Network for Cosmological Reconstruction
Andronikos Paliathanasis
We introduce Cosmo-PINN, a Physics-Informed Neural Network for reconstruction of the cosmological theory. In this work we demonstrate the application of the Cosmo-PINN in the recon…
Saturation Mechanisms in the Interacting Dark Sector
Andronikos Paliathanasis, Kevin J. Duffy
We introduce a family of phenomenological cosmological models featuring an interacting dark sector modulated by a sparseness scale parameter, in order to describe the late-time acc…
Viaggiu holographic dark energy in light of DESI DR2
Amlan K. Halder, Andronikos Paliathanasis, Stefano Viaggiu +2
We test the cosmological viability of the Viaggiu holographic dark energy (VHDE) model by using late-time observational data. In particular, we place constraints on the free parame…
Cosmological Constraints on the Generalized Uncertainty Principle from Redshift-Space Distortions
Andronikos Paliathanasis
We investigate the imprints of the Generalized Uncertainty Principle on cosmological scales by using redshift-space distortion measurements in combination with background cosmologi…
Observational Constraints on Noncoincident -Gravity with Matter-Gravity Coupling
Andronikos Paliathanasis
We investigate -gravity with a matter-gravity coupling as a geometric dark energy candidate for the description of the late-time cosmic acceleration within a spa…