Gravitational waves in higher-order R2 gravity
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DOI: 10.1103/physrevd.104.084061
Abstract: We perform a comprehensive study of gravitational waves in the context of the higher-order quadratic scalar curvature gravity, which encompasses the ordinary Einstein-Hilbert term in the action plus an R2 contribution and a term of… read more here.
Keywords: higher order; order gravity; waves higher; gravitational waves ... See more keywords
Renormalizability in $D$-dimensional higher-order gravity
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DOI: 10.1103/physrevd.95.084007
Abstract: A simple expression for calculating the classical potential concerning $D$-dimensional gravitational models is obtained through a method based on the generating functional. The prescription is then used as a mathematical tool to probe the conjecture… read more here.
Keywords: order gravity; higher order; renormalizability; gravity ... See more keywords
Constraints on fourth order gravity from binary pulsars and gravitational waves
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DOI: 10.1103/physrevd.96.084015
Abstract: We have earlier proposed a fourth order gravity model as a possible explanation for late time cosmic acceleration, and for attened galaxy rotation curves. The model has a free length parameter whose value depends on… read more here.
Keywords: fourth order; gravitational waves; order gravity; binary pulsar ... See more keywords
Almost universal spacetimes in higher-order gravity theories
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DOI: 10.1103/physrevd.99.024043
Abstract: We study almost universal spacetimes --- the spacetimes for which the field equations of any generalized gravity with the Lagrangian constructed from the metric, the Riemann tensor and its covariant derivatives of arbitrary order reduce… read more here.
Keywords: gravity; higher order; order gravity; universal spacetimes ... See more keywords