Zobrazeno 1 - 10
of 1 788
pro vyhledávání: '"Capozziello, Salvatore"'
We explore wormhole solutions sourced by Casimir energy density involving generalized uncertainty principle corrections within the framework of Rastall-Rainbow gravity. The questions of traversability and stability, as well as the presence of exotic
Externí odkaz:
http://arxiv.org/abs/2409.09750
The gravitational interaction, as described by the Einstein-Cartan theory, is shown to emerge as the by-product of the spontaneous symmetry breaking of a gauge symmetry in a pre-geometric four-dimensional spacetime. Starting from a formulation \`a la
Externí odkaz:
http://arxiv.org/abs/2409.02200
Autor:
Capozziello, Salvatore, Shokri, Mehdi
We study slow-roll inflation as a common feature in Metric-affine Theories of Gravity. In particular, we take into account extended metric, teleparallel and symmetric-teleparallel theories of gravity, based on different geometric invariants, discussi
Externí odkaz:
http://arxiv.org/abs/2408.17415
Gravitational waves (GWs) can undoubtedly serve as a messenger from the early Universe acting as well as a novel probe of the underlying gravity theory. In this work, motivated by one-loop vacuum-polarization effects on curved spacetime, we investiga
Externí odkaz:
http://arxiv.org/abs/2408.17259
Several correlations among Gamma-Ray Bursts (GRBs) quantities, both in the prompt and afterglow emissions, have been established during the last decades, thus enabling the standardization of GRBs as cosmological probes. Since GRBs are observed up to
Externí odkaz:
http://arxiv.org/abs/2408.10707
Publikováno v:
Eur. Phys. J. C 84, no.8, 771 (2024)
We explore Noether symmetries of Horndeski gravity, extending the classification of general scalar-tensor theories. Starting from the minimally coupled scalar field and the first-generation scalar-tensor gravity, the discussion is generalised to kine
Externí odkaz:
http://arxiv.org/abs/2408.09018
We explores the Pantheon+SH0ES dataset to identify patterns that can discriminate between different cosmological models. We focus on determining whether the behaviour of dark energy is consistent with the standard $\Lambda$CDM model or suggests novel
Externí odkaz:
http://arxiv.org/abs/2408.01563
Publikováno v:
Physics of the Dark Universe 46, 101579 (2024)
The emergence of the Ultra-Diffuse Galaxies in recent years has posed a severe challenge to the galaxy formation models as well as the Extended Theories of Gravity. The existence of both dark matter lacking and dark matter dominated systems within th
Externí odkaz:
http://arxiv.org/abs/2407.18084
We investigate gravitational waves generated in $f(Q,B)$ non-metric gravity, i.e., a theory of gravity described by a non-metric compatible connection, free of torsion and curvature. It is an extension of symmetric teleparallel gravity, equipped with
Externí odkaz:
http://arxiv.org/abs/2407.14862
The effects of cosmological expansion on quantum bosonic states are investigated, using quantum information theory. In particular, a generic Bogoliubov transformation of bosonic field modes is considered and the state change on a single mode is regar
Externí odkaz:
http://arxiv.org/abs/2406.19274