65 citations · 416 across the 44 of their papers we have counts for
44 papers
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…
Corrections to the Black hole entropy from a Bose Einstein condensate: a semi-classical phenomenological approach
Stefano Viaggiu
In this paper we obtain logarithmic corrections to the black hole entropy. Motivated by our recent proposal concerning the nature of the degrees of freedom leading to the black hol…
Physically viable rotating mass solutions surrounding Kerr black hole
Stefano Viaggiu
There exists in literature an increasing interest in the study of mass distributions surrounding black holes as describing dark matter halo in spiral galaxies. Motivated by this in…
A new class of anisotropic rotating fluids and some throat-like sources for Kerr metric as examples
Stefano Viaggiu
Motivated by the increasing interest in finding physically viable rotating sources, we present a new class of anisotropic rotating solutions. The energy-momentum tensor compatible…
On the perturbative formalism and a possible quantum discrete spectrum for the Regge-Wheeler equation of a de Sitter spacetime
Stefano Viaggiu
In this paper we study the perturbative regime in the static patch of de Sitter metric in the Regge-Wheeler formalism. After realizing that perturbative regime in a de Sitter space…
The physical nature of the cosmological constant and the decoherence scale in a renormalization-group approach
Stefano Viaggiu
In this paper we consider the nature of the cosmological constant as due by quantum fluctuations. Quantum fluctuations are generated at Planckian scales by noncommutative effects a…