38 citations · 94 across the 13 of their papers we have counts for
14 papers
A perturbative geometric approach for photon spheres, massive particle surfaces and black hole shadows with mass variations
Oscar Lasso Andino, Fernando G. Veloz
The spacetime behavior at very extreme conditions, such as the regions near a black hole, can be very difficult to modelize. In this work we introduce a new geometric method that a…
Photon spheres and bulk probes in /: the quantum BTZ black hole
Oscar Lasso Andino, Axel León-Arteaga, Guillermo Ramírez-Ulloa
The entanglement entropy in dimensional conformal field theories can be calculated using the area of dimensional minimal surfaces in . Therefore, the existence…
Entanglement entropy and conformal bounds for CFTs
Pablo Bueno, Adam Fernández García, Francesco Gentile +2
The entanglement entropy of spacetime regions in odd-dimensional conformal field theories (CFTs) contains a universal constant term, . This quantity c…
Light rings, timelike circular orbits and curvature of traversable wormholes
Boris Bermúdez-Cárdenas, Oscar Lasso Andino
We study the existence of light rings (LR's) and timelike circular orbits (TCO's) in spherically symmetric, asymptotically flat wormhole geometries. We use a purely geometric appro…
On regular charged black holes in three dimensions
Pablo Bueno, Oscar Lasso Andino, Javier Moreno +1
As argued in arXiv:2104.10172, introducing a non-minimally coupled scalar field, three-dimensional Einstein gravity can be extended by infinite families of theories which admit sim…
Massive particle surfaces and black hole shadows from intrinsic curvature
Boris Bermúdez-Cárdenas, Oscar Lasso Andino
In a recent article PRD 111, 064001 (2025) a new geometric a approach for studying massive particle surfaces was proposed. Using the Gaussian and geodesic curvatures of a two dimen…
Conformal bounds in three dimensions from entanglement entropy
Pablo Bueno, Horacio Casini, Oscar Lasso Andino +1
The entanglement entropy of an arbitrary spacetime region in a three-dimensional conformal field theory (CFT) contains a constant universal coefficient, . For general the…
Aspects of N-partite information in conformal field theories
César A. Agón, Pablo Bueno, Oscar Lasso Andino +1
We present several new results for the -partite information, , of spatial regions in the ground state of -dimensional conformal field theories. First, we show that …
A Riemannian geometric approach for timelike and null spacetime geodesics
Marcos A. Argañaraz, Oscar Lasso Andino
The geodesic motion in a Lorentzian spacetime can be described by trajectories in a dimensional Riemannian metric. In this article we present a generalized Jacobi metric obtain…
Disks globally maximize the entanglement entropy in dimensions
Pablo Bueno, Horacio Casini, Oscar Lasso Andino +1
The entanglement entropy corresponding to a smooth region in general three-dimensional CFTs contains a constant universal term, . For a disk region, $F|_{…
Dynamics in wormhole spacetimes: a Jacobi metric approach
Marcos Argañaraz, Oscar Lasso Andino
This article deals with the study of the dynamics of particles in different wormhole geometries. Using the Jacobi metric approach we study the geodesic motion on the Morris-Thorne…
RG-2 flow and black hole entanglement entropy
Oscar Lasso Andino
We study the evolution of a metric of a two dimensional black hole under the second loop renormalization group fow, the RG-2 fow. Since the black hole metric is noncompact (we cons…
The tensor hierarchy of 8-dimensional field theories
Oscar Lasso Andino, Tomas Ortin
We construct the tensor hierarchy of generic, bosonic, 8-dimensional field theories. We first study the form of the most general 8-dimensional bosonic theory with Abelian gauge sym…
f(Lovelock) theories of gravity
Pablo Bueno, Pablo A. Cano, Oscar Lasso A. +1
f(Lovelock) gravities are simple generalizations of the usual f(R) and Lovelock theories in which the gravitational action depends on some arbitrary function of the corresponding d…