156 citations · 1.5k across the 58 of their papers we have counts for
52 papers · 1 filter
Tides and energy conditions in Einstein-Gauss-Bonnet thin-shell wormholes
Ernesto F. Eiroa, Emilio Rubín de Celis, Claudio Simeone
In this article we study spherical thin-shell wormholes in five-dimensional Einstein-Gauss-Bonnet gravity. We show that configurations supported by non-exotic matter, that is matte…
Tides and traversability in gravastars and other related geometries
Cecilia Tomasini, Claudio Simeone, Emilio Rubín de Celis
Tidal effects related to the traversability across thin shells are examined in spherically symmetric geometries. We focus mainly on shells separating inner from outer regions of gr…
Tides across thin-shells: differences between spacetimes with one and two asymptotic regions
E. Rubín de Celis, C. Simeone
Traversability across thin shells is investigated, with special attention devoted to the difference in tides related with different global properties of the geometries. While we ha…
Further considerations about the traversability of thin-shell wormholes
E. Rubín de Celis, C. Simeone
Traversability in relation with tides in thin-shell wormholes is revisited to investigate the possibility of improving recently noted restrictive conditions for a safe travel acros…
About the traversability of thin-shell wormholes
E. Rubín de Celis, C. Simeone
Traversability in relation with tides across thin-shell wormholes is analyzed. Conditions for a safe travel through a wormhole throat are established in terms of the parameters cha…
Wormholes in Einstein-Born-Infeld theory
Martin G. Richarte, Claudio Simeone
Spherically symmetric thin-shell wormholes are studied within the framework of Einstein-Born-Infeld theory. We analyze the exotic matter content and find that for certain values of…
Electrostatics and self-force in asymptotically flat cylindrical wormholes
E. Rubín de Celis, C. Simeone
The problem of the electrostatics in conical wormholes is revisited, now improving the background geometries with asymptotical flatness. The electric self-force on a point charge p…
Arbitrarily coupled massive scalar field in conical thin-shell spacetimes
C. Tomasini, E. Rubín de Celis, C. Simeone
We study the massive scalar field of a charged particle held at rest in conical thin-shell spacetimes with one or two asymptotic regions. Resonant and stable scalar Green's functio…
Thin shells associated to black string spacetimes
Ernesto F. Eiroa, Emilio Rubin de Celis, Claudio Simeone
In this article, we study thin shells of matter connecting charged black string geometries with different values of the corresponding parameters. We analyze the matter content and…
Self-force on an arbitrarily coupled scalar charge in cylindrical thin-shell spacetimes
Cecilia Tomasini, Emilio Rubín de Celis, Claudio Simeone
We consider the arbitrarily coupled field and self-force of a static massless scalar charge in cylindrical spacetimes with one or two asymptotic regions, with the only matter conte…
Perturbative dynamics of thin-shell wormholes beyond general relativity: an alternative approach
Emilio Rubín de Celis, Cecilia Tomasini, Claudio Simeone
Recent studies relating the approximations for the equations of state for thin shells and their consequent perturbative evolution are extended to thin-shell wormholes in theories b…
A note about the perturbative dynamics of symmetric shells
Emilio Rubín de Celis, Claudio Simeone
Several examples suggest the conjecture that the central aspect determining a monotonic evolution for perturbed highly symmetric thin-shells is the approximation adopted for their…
Thin shells joining local cosmic string geometries
Ernesto F. Eiroa, Emilio Rubin de Celis, Claudio Simeone
In this article we present a theoretical construction of spacetimes with a thin shell that joins two different local cosmic string geometries. We study two types of global manifold…
Asymptotically anti-de Sitter cylindrical thin-shell wormholes
Ernesto F. Eiroa, Claudio Simeone
In this article we investigate cylindrical thin-shell wormholes which are asymptotically anti-de Sitter. We analyze their stability under perturbations preserving the symmetry by u…
General formalism for the stability of thin-shell wormholes in 2+1 dimensions
Cecilia Bejarano, Ernesto F. Eiroa, Claudio Simeone
In this article we theoretically construct circular thin-shell wormholes in a 2+1 dimensional spacetime. The construction is symmetric with respect to the throat. We present a gene…
Probing global aspects of a geometry by the self-force on a charge: Spherical thin-shell wormholes
E. Rubín de Celis, O. P. Santillán, C. Simeone
The self-interaction for a static point charge in the space-time of a thin-shell wormhole constructed connecting two identical Schwarzschild geometries is calculated in a series ex…
Charged shells in a (2+1)-dimensional spacetime
Ernesto F. Eiroa, Claudio Simeone
We study circular shells in a (2+1)-dimensional background within the framework of Einstein-Born-Infeld theory. For shells around black holes we analyze the mechanical stability un…
Probing global aspects of a geometry by the self-force on a charge; cylindical thin-shell wormholes
E. Rubín de Celis, O. P. Santillán, C. Simeone
We obtain the self-interaction for a point charge in the space-time of a cylindrical thin-shell wormhole connecting two identical locally flat geometries with a constant deficit an…
Cylindrical thin-shell wormholes and energy conditions
Claudio Simeone
We prove the impossibility of cylindrical thin-shell wormholes supported by matter satisfying the energy conditions everywhere, under reasonable assumptions about the asymptotic be…
Addendum to "Thin-shell wormholes supported by ordinary matter in Einstein-Gauss-Bonnet gravity"
Claudio Simeone
Thin-shell wormholes are constructed starting from the exotic branch of Wiltshire spherically symmetric solution of Einstein-Gauss-Bonnet gravity. The energy-momentum tensor of the…
Aspects of spherical shells in a D-dimensional background
Ernesto F. Eiroa, Claudio Simeone
In this work, shells are mathematically constructed by applying the cut and paste procedure to D-dimensional spherically symmetric geometries. The weak energy condition for the mat…
Thin shells in Einstein-Born-Infeld theory
Ernesto F. Eiroa, Claudio Simeone
The characterization and mechanical stability of charged thin shells with spherical symmetry are analyzed in the context of Einstein-Born-Infeld theory. The study of stability is p…
Some aspects of cylindrical solutions in Brans-Dicke gravity
Andres Arazi, Claudio Simeone
Several points regarding cylindrical Brans-Dicke geometries are studied. The issue of particle trajectories for the vacuum cylindrical solution is revisited. The possible particula…
Stability of charged thin shells
Ernesto F. Eiroa, Claudio Simeone
In this article we study the mechanical stability of spherically symmetric thin shells with charge, in Einstein-Maxwell and Einstein-Born-Infeld theories. We analyze linearized per…