Enlace del recurso

“…We show that the holographic description of a class of AdS black holes with scalar hair involves dual field theories with a double well effective potential. …”
Enlace del recurso
Enlace del recurso

“…Primordial black-holes (PBH) can be produced in single-field models of inflation with a quasi-inflection point in the potential. …”
Enlace del recurso
Enlace del recurso

Enlace del recurso

“…In particular, the effective scalar coupling to the Maxwell field, $e^{-\alpha \phi} F_{\mu\nu} F^{\mu\nu}$, gives rise to a new string black hole with $\alpha = \sqrt{3}$, in contrast to the pure dilaton black hole solution which has $\alpha=1$. …”
Enlace del recurso
Enlace del recurso

Enlace del recurso

Enlace del recurso

“…Closed photon orbits around isolated black holes are related to important aspects of black hole physics, such as strong lensing, absorption cross section of null particles and the way that black holes relax through quasinormal ringing. …”
Enlace del recurso
Enlace del recurso

Enlace del recurso

“…We introduce here an effective description for perturbations around spherically symmetric spacetimes in the context of scalar-tensor theories, which we apply to study quasi-normal modes for black holes with scalar hair. We derive the equations of motion governing the dynamics of both the polar and the axial modes in terms of the coefficients of the effective theory. …”
Enlace del recurso
Enlace del recurso

“…Black hole (BH) thermodynamics was established by Bekenstein and Hawking, who made abstract theoretical arguments about the second law of thermodynamics and quantum theory in curved spacetime respectively. …”
Enlace del recurso
Enlace del recurso

“…Primordial Black Holes (PBH) from peaks in the curvature power spectrum could constitute today an important fraction of the Dark Matter in the Universe. …”
Enlace del recurso

“…The composition as well as the very existence of the interior of a Schwarzschild black hole (BH) remains at the forefront of interesting, open problems in fundamental physics. …”
Enlace del recurso
Enlace del recurso

“…We show that in single field inflationary models the super-horizon evolution of curvature perturbations on comoving slices &calR;, which can cause the production of primordial black holes (PBH), is not due to entropy perturbations, but to the background evolution effect on the conversion between entropy and curvature perturbations. …”
Enlace del recurso
Enlace del recurso

“…We consider the interaction between a plane wave and a (countermoving) black hole. We show that energy is transferred from the black hole to the wave, giving rise to a negative absorption cross section. …”
Enlace del recurso
Enlace del recurso

“…In the model where Primordial Black Holes (PBHs) form from large primordial curvature (C) perturbations, i.e., CPBHs, constraints on PBH abundance provide in principle constraints on the primordial curvature power spectrum. …”
Enlace del recurso
Enlace del recurso

“…Since null constructions provide simple dressings for gauge-invariant observables inside black holes, they also allow us to investigate the question of compatibility of observables inside and outside black holes, and in particular the idea of black hole complementarity. …”
Enlace del recurso
Enlace del recurso

“…Primordial black holes (PBHs) from the early Universe constitute a viable dark matter (DM) candidate and can span many orders of magnitude in mass. …”
Enlace del recurso
Enlace del recurso

“…We investigate the thermodynamic properties of the Hawking-Page phase transition of AdS black holes. We present evidence for the existence of two universal critical constants associated with the Hawking-Page (HP) and minimum black hole thermodynamical transition points. …”
Enlace del recurso
Enlace del recurso

“…After more than a decade of diffraction-limited imaging on large ground-based telescopes, the case for a supermassive black hole at the Galactic center has gone from a possibility to a certainty, thanks to measurements of individual stellar orbits. …”
Enlace del recurso