Perfect fluid filled universe in odd dimensional pure Lovelock gravity
Sign Up to like & getrecommendations! Published in 2020 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2020.100735
Abstract: Abstract It is well known that d = 2 N + 1 dimensional pure Lovelock metrics do not describe bounded distributions neither do they admit nontrivial vacuum solutions. On this basis it has been variously… read more here.
Keywords: fluid filled; perfect fluid; pure lovelock; dimensional pure ... See more keywords
First-order Lagrangian and Hamiltonian of Lovelock gravity
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DOI: 10.1088/1361-6382/abf415
Abstract: Based on the insight gained by many authors over the years on the structure of the Einstein–Hilbert, Gauss–Bonnet and Lovelock gravity Lagrangians, we show how to derive-in an elementary fashion-their first-order, generalized ‘Arnowitt–Deser–Misner’ Lagrangian and… read more here.
Keywords: lovelock; order lagrangian; first order; lovelock gravity ... See more keywords
Maximum force in modified gravity theories
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DOI: 10.1103/physrevd.102.064018
Abstract: We investigate the existence and nature of classical maximum force bound between two black holes with touching horizons. Besides general relativity, the maximum force bound is independent of black hole masses only in Moffat's theory,… read more here.
Keywords: maximum force; force; force bound; gravity ... See more keywords
Conformally coupled scalar in Lovelock theory
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DOI: 10.1103/physrevd.107.084050
Abstract: In arbitrary higher dimension, we consider the combination of Lovelock gravity alongside a scalar-tensor action built out of higher order operators and Euler densities. The latter action is constructed in such a way as to… read more here.
Keywords: theory; lovelock; scalar field; stealth ... See more keywords
Chern-Weil theorem, Lovelock Lagrangians in critical dimensions and boundary terms in gravity actions
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DOI: 10.1103/physrevd.98.044031
Abstract: In this paper we show how to translate into tensorial language the Chern-Weil theorem for the Lorentz symmetry, which equates the difference of the Euler densities of two manifolds to the exterior derivative of a… read more here.
Keywords: critical dimensions; weil theorem; chern weil; gravity ... See more keywords