Field Sources for Generalized Ellis-Bronnikov Wormhole

Abstract

The so-called generalized Ellis-Bronnikov wormhole is a modification of the standard Ellis-Bronnikov solution, in which a parameter $m>2$ is introduced-recovering the original Ellis-Bronnikov geometry when $m=2$. In this work, we investigate the properties of this spacetime by analyzing its embedding diagrams and how they are affected by variations in the parameter $m$. Furthermore, we study the accretion of dust onto this geometry, showing that, unlike in black hole scenarios, the radial infall velocity of the dust decreases as it approaches the wormhole throat, with this deceleration becoming increasingly abrupt for larger values of $m$. Our results also demonstrate that the mass of the wormhole generally decreases due to the accretion process, a finding that aligns with recent works in the literature for Ellis-Bronnikov-type geometries. This mass loss, coupled with the characteristic accumulation of matter near the throat, highlights the unique dynamical response of traversable wormholes to baryonic influx. As a main result, we demonstrate that this geometry arises as an exact solution of General Relativity when considering the combined presence of a phantom scalar field and a magnetic or electric source.

version accepted for publication in CQG

References in corpus (39)

• First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole
• First Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way
• Black-bounce to traversable wormhole
• Apparent shape of super-spinning black holes
• Shadows of spherically symmetric black holes and naked singularities
• Can the supermassive objects at the centers of galaxies be traversable wormholes? The first test of strong gravity for mm/sub-mm VLBI facilities
• Instability of wormholes supported by a ghost scalar field. I. Linear stability analysis
• Shadows of rotating wormholes
• Field sources for Simpson-Visser space-times
• Charged black-bounce spacetimes
• Instability of wormholes supported by a ghost scalar field. II. Nonlinear evolution
• General relativistic Poynting-Robertson effect to diagnose wormholes existence: static and spherically symmetric case
• Bardeen Regular Black Hole With an Electric Source
• Accretion and Evaporation of Modified Hayward Black Hole
• Scalar fields as sources for wormholes and regular black holes
• Astrophysical flows near $f(T)$ gravity black holes
• New analytic models of traversable wormholes
• Spherical steady accretion flows -- dependence on the cosmological constant, exact isothermal solutions and applications to cosmology
• Accretion Processes for General Spherically Symmetric Compact Objects
• Source of black bounces in general relativity
• Static and spherically symmetric wormholes in metric-affine theories of gravity
• Shadow of a naked singularity
• Quantum gravity corrections to accretion onto a Schwarzschild black hole
• Stability and instability of Ellis and phantom wormholes: Are there ghosts?
• Confined-exotic-matter wormholes with no gluing effects -- Imaging supermassive wormholes and black holes
• On black bounce space-times in non-linear electrodynamics
• Cylindrical black bounces and their field sources
• Generalised Ellis-Bronnikov wormholes embedded in warped braneworld background and energy conditions
• Spherical accretion by normal and phantom Einstein--Maxwell--dilaton black holes
• Accretion Flow onto Ellis-Bronnikov Wormhole
• Braneworld Black Bounce to Transversable Wormhole
• Novel traversable wormhole in General Relativity and Einstein-Scalar-Gauss-Bonnet theory supported by nonlinear electrodynamics
• Generalized Ellis-Bronnikov graphene wormhole
• Accretion of perfect fluids onto a class of regular black holes
• Accretion of matter and spectra of Binary X-ray sources in Massive Gravity
• Novel triple barrier potential for axial gravitational perturbations of a family of Lorentzian wormholes
• Generalized Ellis-Bronnikov wormholes in asymptotically safe gravity
• Search for Missing Links Between Two Extreme Wind Speed Profiles : Dark Energy Accretion and Adiabatic Fluid Accretion
• Geodesics in Generalised Ellis-Bronnikov Spacetime Embedded in Warped 5D Background