11 citations · 15 across the 5 of their papers we have counts for
5 papers
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…
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…
Boson stars with nonlinear sigma models
Pablo A. Cano, Ludovico Machet, Charlotte Myin
Boson stars arise as solutions of a massive complex scalar field coupled to gravity. A variety of scalar potentials, giving rise to different types of boson stars, have been studie…
On the horizon entropy of a causal set
Ludovico Machet, Jinzhao Wang
We discuss how to define a kinematical horizon entropy on a causal set. We extend a recent definition of horizon molecules to a setting with a null hypersurface crossing the horizo…
On the continuum limit of Benincasa-Dowker-Glaser causal set action
Ludovico Machet, Jinzhao Wang
We study the continuum limit of the Benincasa-Dowker-Glaser causal set action on a causally convex compact region. In particular, we compute the action of a causal set randomly spr…