Paper

{
  "raw_xml": "<entry>\n    <id>http://arxiv.org/abs/2603.15178v1</id>\n    <title>Viaggiu holographic dark energy in light of DESI DR2</title>\n    <updated>2026-03-16T12:13:31Z</updated>\n    <link href='https://arxiv.org/abs/2603.15178v1' rel='alternate' type='text/html'/>\n    <link href='https://arxiv.org/pdf/2603.15178v1' rel='related' title='pdf' type='application/pdf'/>\n    <summary>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 parameters of the model using Type Ia supernovae from the PantheonPlus, Union3.0, and DES-Dovekie catalogues, the Cosmic Chronometers, and the Baryon Acoustic Oscillations from the DESI DR2. Our analysis suggests that the VHDE model fits the observational data better or similar to the $Λ$CDM for all dataset combinations considered. The value obtained for $H_0$ is similar to the $Λ$CDM, while the current matter density parameter is constrained around $Ω_{m0}\\simeq 0.24$, smaller to that obtained by the $Λ$CDM. Moreover, the parameter introduced by the VHDE is found to have a mean value within the range $\\fracπ{3} δ^2 \\sim 0.27-0.33$. Finally, we used Akaike's Information Criterion (AIC) and Bayesian evidence to test the VHDE model against the $Λ$CDM scenario. The AIC demonstrates that the two models are statistically indistinguishable, while Bayesian evidence reveals that the data have a mild preference for the $Λ$CDM model for most of the dataset combinations considered. Nevertheless, the VHDE model remains consistent with current late-time cosmological observations and offers a feasible mechanism for describing the late-time accelerating scenario.</summary>\n    <category scheme='http://arxiv.org/schemas/atom' term='gr-qc'/>\n    <category scheme='http://arxiv.org/schemas/atom' term='hep-th'/>\n    <published>2026-03-16T12:13:31Z</published>\n    <arxiv:comment>10 pages, 2 tables, 2 figures</arxiv:comment>\n    <arxiv:primary_category term='gr-qc'/>\n    <author>\n      <name>Amlan K. Halder</name>\n    </author>\n    <author>\n      <name>Andronikos Paliathanasis</name>\n    </author>\n    <author>\n      <name>Stefano Viaggiu</name>\n    </author>\n    <author>\n      <name>Abdulla Al Mamon</name>\n    </author>\n    <author>\n      <name>Subhajit Saha</name>\n    </author>\n  </entry>"
}