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Stability of the flat FLRW metric in gravity
Gabriel Farrugia, Jackson Levi Said
In this paper, we investigate the stability of the flat FLRW metric in gravity. This is achieved by analysing the small perturbations, about the Hubble parameter and the…
Growth factor in gravity
Gabriel Farrugia, Jackson Levi Said
We investigate the growth factor for sub-horizon modes during late times in gravity, where is the torsion scalar and is the trace of the stress…
Gravitomagnetic effects in quadratic gravity with a scalar field
Andrew Finch, Jackson Levi Said
The two gravitomagnetic effects which influence bodies orbiting around a gravitational source are the geodetic effect and the Lense-Thirring effect. The former describes the preces…
Solar System tests in gravity
Gabriel Farrugia, Jackson Levi Said, Matteo Luca Ruggiero
We investigate the four solar system tests of gravity - perihelion precession, light bending, Shapiro time delay, gravitational redshift - in gravity. In particular, we inve…