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The Hamilton equations in teleparallel gravity and in New General Relativity
Francesco Bajardi, Daniel Blixt, Salvatore Capozziello
We derive the Hamiltonian function for extended teleparallel theories of gravity in their covariant formulation. In particular, we present the Hamiltonian for gravity and Ne…
Missing matter in galaxies as a neutrino mixing effect
Antonio Capolupo, Salvatore Capozziello, Gabriele Pisacane +1
We show that, in the framework of quantum field theory in curved spacetime, the semiclassical energy-momentum tensor of the neutrino flavor vacuum fulfills the equation of state of…
Excess Radiation from Axion-Photon Conversion
Andrea Addazi, Salvatore Capozziello, Qingyu Gan +2
Two notable anomalies in radio observations -- the excess radiation in the Rayleigh-Jeans tail of the cosmic microwave background, revealed by ARCADE2, and the twice-deeper absorpt…
Generalized uncertainty principle corrections in Rastall-Rainbow Casimir wormholes
Emmanuele Battista, Salvatore Capozziello, Abdelghani Errehymy
We explore wormhole solutions sourced by Casimir energy density involving generalized uncertainty principle corrections within the framework of Rastall-Rainbow gravity. The questio…
Gravity from Pre-geometry
Andrea Addazi, Salvatore Capozziello, Antonino Marciano +1
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-ge…
Comparing Inflationary Models in Extended Metric-Affine Theories of Gravity
Salvatore Capozziello, Mehdi Shokri
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…