Constraining Palatini-Horndeski theory with gravitational waves after GW170817
arXiv:2211.12056 · doi:10.1140/epjc/s10052-023-11861-9
Abstract
In this paper, we investigate the possible parameter space of Palatini-Horndeski theory with gravitational waves in a spatially flat Universe. We find that if the theory satisfies the following condition: in any spatially flat cosmological background, the tensor gravitational wave speed is the speed of light , then only is left as the possible action in Palatini-Horndeski theory.
arXiv comment23 pages, no figure
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