Polarizations of gravitational waves in $f(R)$ gravity
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DOI: 10.1103/physrevd.95.104034
Abstract: We point out that there are only three polarizations for gravitational waves in $f(R)$ gravity, and the polarization due to the massive scalar mode is a mix of the pure longitudinal and transverse breathing polarization.… read more here.
Keywords: polarizations gravitational; waves gravity; gravitational waves;