Weyl R2 inflation with an emergent Planck scale
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2019)209
Abstract: Abstract We study inflation in Weyl gravity. The original Weyl quadratic gravity, based on Weyl conformal geometry, is a theory invariant under the Weyl symmetry of gauged scale transformations. In this theory the Planck scale… read more here.
Keywords: weyl; inflation; geometry; weyl gravity ... See more keywords
$z-$Weyl gravity in higher dimensions
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2017/09/024
Abstract: We consider higher dimensional gravity in which the four dimensional spacetime and extra dimensions are not treated on an equal footing. The anisotropy is implemented in the ADM decomposition of higher dimensional metric by requiring… read more here.
Keywords: gravity higher; weyl gravity; four dimensional; higher dimensions ... See more keywords
Hairy black holes in Einstein-Weyl gravity
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.084027
Abstract: Higher derivative extensions of Einstein's general relativity are commonly viewed as alternative and effective theories of gravity, not just due to the fact that these arise naturally in the string theory approach to gravity, but… read more here.
Keywords: weyl gravity; hairy black; black holes; black hole ... See more keywords
Gravitational lens without asymptotic flatness: Its application to Weyl gravity
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DOI: 10.1103/physrevd.102.064060
Abstract: We discuss, without assuming asymptotic flatness, a gravitational lens for an observer and source that are within a finite distance from a lens object. The proposed lens equation is consistent with the deflection angle of… read more here.
Keywords: asymptotic flatness; gravitational lens; gravity; equation ... See more keywords
Testing Weyl gravity at galactic and extra-galactic scales
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.98.124012
Abstract: We examine the viability of Weyl conformal gravity as an alternative to the general theory of relativity. By using the extended rotation curve of the Milky Way and velocity dispersions of four globular clusters, we… read more here.
Keywords: weyl gravity; extra galactic; testing weyl; gravity ... See more keywords
Near-extremal black holes in Weyl gravity: Quasinormal modes and geodesic instability
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.124025
Abstract: Stability criteria of nearly extreme black holes in the perturbations level is one of the interesting issues in gravitational systems. Considering the nearly extreme conformal--de Sitter black holes, in this paper, we obtain an exact… read more here.
Keywords: black holes; near extremal; weyl gravity; holes weyl ... See more keywords
Model of a spin-1/2 electric charge in F(B2) modified Weyl gravity
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Geometric Methods in Modern Physics"
DOI: 10.1142/s0219887820501923
Abstract: Within [Formula: see text] modified Weyl gravity, we consider a model of a spin-[Formula: see text] electric charge consisting of interior and exterior regions. The interior region is determined by quantum gravitational effects whose approximate… read more here.
Keywords: spin; modified weyl; weyl gravity; electric charge ... See more keywords
On the Near-Horizon Canonical Quantum Microstates from AdS2/CFT1 and Conformal Weyl Gravity
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DOI: 10.3390/universe3030056
Abstract: We compute the full asymptotic symmetry group of black holes belonging to the same equivalence class of solutions within the conformal Weyl gravity formalism. We do this within an A d S 2 / C… read more here.
Keywords: quantum; weyl gravity; horizon canonical; conformal weyl ... See more keywords