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Dynamical descalarization in binary black hole mergers
Hector O. Silva, Helvi Witek, Matthew Elley +1
Scalar fields coupled to the Gauss-Bonnet invariant can undergo a tachyonic instability, leading to spontaneous scalarization of black holes. Studies of this effect have so far bee…
Interferometric geometry from symmetry-broken Uhlmann gauge group with applications to topological phase transitions
Hector Silva, Bruno Mera, Nikola Paunković
We provide a natural generalization of a Riemannian structure, i.e., a metric, recently introduced by Sjöqvist for the space of non degenerate density matrices, to the degenerate c…
Spin-induced scalarized black holes
Carlos A. R. Herdeiro, Eugen Radu, Hector O. Silva +2
It was recently shown that a scalar field suitably coupled to the Gauss-Bonnet invariant can undergo a spin-induced linear tachyonic instability near a Kerr black hol…
The surface of rapidly-rotating neutron stars: implications to neutron star parameter estimation
Hector O. Silva, George Pappas, Nicolás Yunes +1
The Neutron star Interior Composition Explorer (NICER) is currently observing the x-ray pulse profiles emitted by hot spots on the surface of rotating neutron stars allowing for an…
Astrophysical and theoretical physics implications from multimessenger neutron star observations
Hector O. Silva, A. Miguel Holgado, Alejandro Cárdenas-Avendaño +1
The Neutron Star Interior Composition Explorer (NICER) recently measured the mass and equatorial radius of the isolated neutron star PSR J0030+0451. We use these measurements to in…