2 papers
gr-qc2025
Scalar fields from nonlinear sigma models on black hole spacetimes
Ludovico Machet, Llibert Aresté Saló
Scalar fields with non-trivial kinetic term derived from a nonlinear sigma model are motivated by UV completions of gravity such as string theory. We discuss the $\mathrm{SL}(2,\ma…
gr-qc2025
Tidal Love numbers and quasi-normal modes of the Schwarzschild-Hernquist black hole
Sumanta Chakraborty, Geoffrey Compère, Ludovico Machet
We derive the model of the Schwarzschild black hole immersed into a dark matter halo with a relativistic Hernquist profile, the Schwarzschild-Hernquist black hole, and obtain its t…