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- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT446 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di Roma IIT444 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di CataniaIT443 papers
- National Centre for Nuclear ResearchPL443 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di PisaIT441 papers
- California Institute of TechnologyUS439 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BariIT436 papers
- Fermi National Accelerator LaboratoryUS435 papers
- Carnegie Mellon UniversityUS431 papers
- Centro de Investigaciones Energéticas, Medioambientales y TecnológicasES431 papers
- Cornell UniversityUS431 papers
- Helsinki Institute of PhysicsFI431 papers
12 papers · 1 filter
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…
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…
A proposal for Heisenberg uncertainty principle and STUR for curved backgrounds: an application to white dwarf, neutron stars and black holes
Stefano Viaggiu
After a critical overview of the Generalized Uncertainty Principle (GUP) applied to compact objects, we propose a texture of Heisenberg uncertainty principle in curved spacetimes (…