99 citations · 285 across the 21 of their papers we have counts for
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Exorcising ghosts with gravitational waves: cases of ghostful and ghost-free fourth-order gravity
Gaetano Lambiase, Shinji Mukohyama, Tanmay Kumar Poddar +1
General Relativity (GR) is an effective field theory valid in the infrared regime. Quadratic curvature extensions intended to probe ultraviolet physics generically propagate a mass…
Gravitational Signatures of Axion Dark Matter via Parity-Violating Interactions
Marco Figliolia, Francesco Grippa, Gaetano Lambiase +1
We investigate axion-like particles coupled to gravity through a parity-violating Chern-Simons (CS) interaction. In this framework, axion dark matter (DM) can decay into pairs of c…
Impact of the cosmic neutrino background on black hole superradiance
Gaetano Lambiase, Tanmay Kumar Poddar, Luca Visinelli
We assess the effect of the Cosmic Neutrino Background (CB) on superradiant instabilities caused by an ultralight scalar field around spinning black holes (BHs). When the scalar…
Primordial gravitational waves from spontaneous Lorentz symmetry breaking
Mohsen Khodadi, Gaetano Lambiase, Leonardo Mastrototaro +1
We study the effect of Spontaneous Lorentz Symmetry Breaking (SLSB) on Primordial Gravitational Waves (PGWs) generated during inflation. The SLSB is induced by a time-like Bumblebe…