Explores gravitational dynamics alterations using a scalar field, suggesting new insights into gravitational waves.
We construct a ghost-free effective field theory in which a scalar spectral field S inducesultraviolet-suppressed corrections to the gravitational-wave propagation and black holequasinormal spectra without modifying the infrared Einstein--Hilbert structure.The resulting theory preserves a single massless spin-2 graviton and remains consistentwith diffeomorphism invariance.
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Kenneth Cairampoma (2026) studied this question.
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