34 citations · 145 across the 14 of their papers we have counts for
15 papers
Boson Star Factory: Past, Present, and Future
Romain Gervalle, Jorge Filipe Mónico Delgado, Etevaldo dos Santos Costa Filho +4
Boson stars are self-gravitating solitons of the Einstein-Klein-Gordon equations for a massive complex scalar field, and arguably the simplest horizonless compact objects arising i…
The imitation game (r)evolutions: -star effective shadow from GRMHD analysis
Víctor Jaramillo, Laura Meneses, Héctor R. Olivares Sánchez +3
-stars are a class of boson stars arising in scalar-field theories with interacting potentials, minimally coupled to gravity. We show that, in certain regions of parameter space…
Gravitational confinement of ghost scalar fields in neutron stars
Argelia Bernal, Víctor Jaramillo, Néstor A. Montiel-Hernández +2
We investigate the effects, stability, and nonlinear dynamics of ghost scalar matter modeled as a field with a negative kinetic term confined within the cores of neutron stars. To…
Probing a minimal dark gauge sector via microlensing of compact dark objects
Juan Barranco, Argelia Bernal, Víctor Jaramillo +2
We introduce a minimal Dark Standard Model (DSM) consisting of a single spin-0 particle with dark gauge symmetry, and completely decoupled from the visible sector. Character…
Born-Infeld boson stars
Víctor Jaramillo, Daniel Martínez-Carbajal, Juan Carlos Degollado +1
We study the Einstein-Klein-Gordon system coupled to the Born-Infeld electrodynamics. We explore the solution space of a static spherically symmetric, complex scalar field minimall…
Confinement of exotic matter. I. Static solutions
Víctor Jaramillo, Erik Jiménez-Vázquez, Darío Núñez
We present the -boson star: A novel configuration of a boson star with an exotic matter nucleus; the exotic matter being described by a real massive scalar field with sel…
Self-interacting scalar field distributions around Schwarzschild black holes
Alejandro Aguilar-Nieto, Víctor Jaramillo, Juan Barranco +3
Long-lived configurations of massive scalar fields around black holes may form if the coupling between the mass of the scalar field and the mass of the black hole is very small. In…
Determination of the angular momentum of the Kerr black hole from equatorial geodesic motion
Laura O. Villegas, Eduardo Ramirez-Codiz, Víctor Jaramillo +4
We present a method to determine the angular momentum of a black hole, based on observations of the trajectories of the bodies in the Kerr space-time. We use the Hamilton equations…
Magnetostatic boson stars
Víctor Jaramillo, Darío Núñez
We solve the Einstein-Maxwell-Klein-Gordon system of equations and derive a compact, static axially symmetric magnetized object which is electrically neutral and made of two comple…
Head-on collisions of -boson stars
Víctor Jaramillo, Nicolas Sanchis-Gual, Juan Barranco +5
Fully non-linear numerical evolutions of the Einstein-(multi)--Klein-Gordon equations are performed to study head-on collisions of -boson stars. Despite being spherically sym…
Extreme -boson stars
Miguel Alcubierre, Juan Barranco, Argelia Bernal +6
A new class of complex scalar field objects, which generalize the well known boson stars, was recently found as solutions to the Einstein-Klein-Gordon system. The generalization co…
Scalar field dark matter with two components: combined approach from particle physics and cosmology
Eréndira Gutiérrez-Luna, Belen Carvente, Víctor Jaramillo +5
In this work we explore the possibility of incorporating particle physics motivated scalar fields to the dark matter cosmological model. In this landscape, we consider the classica…
Observational constraints on complex quintessence with attractive self-interaction
Belen Carvente, Víctor Jaramillo, Celia Escamilla-Rivera +1
In this paper we consider that dark energy could be described solely by a complex scalar field with a Bose-Einstein condensate-like potential (denoted as CSFDE), that is, with a se…
Dynamical -boson stars: generic stability and evidence for non-spherical solutions
Víctor Jaramillo, Nicolas Sanchis-Gual, Juan Barranco +4
-boson stars are static, spherical, multi-field self-gravitating solitons. They are asymptotically flat, finite energy solutions of Einstein's gravity minimally coupled to an…
Traversable -wormholes supported by ghost scalar fields
Belen Carvente, Víctor Jaramillo, Juan Carlos Degollado +2
We present new, asymptotically flat, static, spherically symmetric and traversable wormhole solutions in General Relativity which are supported by a family of ghost scalar fields w…