Dark Energy Stars with Phantom Field
arXiv:2103.15393 · doi:10.1103/PhysRevD.103.084042
Abstract
Dark energy is the constituent with an enormous abundance of the present universe, responsible for the universe's accelerated expansion. Therefore, it is plausible that dark energy may interact within any compact astrophysical objects. The author in Ref. [Phys. Rev. D 83, 127501 (2011)], constructs an exact star solution consisting of an ordinary matter and phantom field from a constant density star (CDS) known as Schwarzschild interior solution. The star denotes a dark energy star (DES). The author claims that the phantom field represents dark energy within the star. So far, the role of the phantom field as dark energy in DES is not systematically studied yet. Related to this issue, we analyze the energy condition of DES. We expect that DES shall violate the strong energy condition (SEC) for a particular condition. We discover that SEC is fully violated only when the compactness reaches the Buchdahl limit. Furthermore, we also investigate the causal conditions and stabilities due to the convective motion and gravitational cracking. We also find that those conditions are violated. These results indicate that DES is not physically stable. However, we may consider DES as an ultra-compact object of which we can calculate the gravitational wave echo time and echo frequency and compare them to those of CDS. We find that the contribution of the phantom field delays the gravitational wave echoes. The effective potential of the perturbed DES is also studied. The potential also enjoys a potential well like CDS but with a deeper well. We also investigate the possibility that DES could form a gravastar when . It is found that gravastar produced from DES possesses no singularity with a dS-like phase as the interior. These results could open more opportunities for the observational study of dark energy in the near future, mostly from the compact astrophysical objects.
arXiv comment14 pages, 11 figures, accepted in Phys. Rev. D
References in corpus (38)
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Dynamics of dark energy
- A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
- Quintessence and black holes
- Quintom Cosmology: Theoretical implications and observations
- Gravitational Vacuum Condensate Stars
- Phantom energy traversable wormholes
- Wormholes supported by a phantom energy
- Dilatonic ghost condensate as dark energy
- Gravastars must have anisotropic pressures
- Stable dark energy stars
- Schwarzschild black hole surrounded by quintessence: Null geodesics
- Surface Tension and Negative Pressure Interior of a Non-Singular `Black Hole'
- Hawking radiation in a -dimensional static spherically-symmetric black Hole surrounded by quintessence
- Rotating black hole and quintessence
- Gravitational wave echoes through new windows
- Kerr-Newman-AdS Black Hole In Quintessential Dark Energy
- Phantom Black Holes in Einstein-Maxwell-Dilaton Theory
- Possibility of higher dimensional anisotropic compact star
- Analytical template for gravitational-wave echoes: signal characterization and prospects of detection with current and future interferometers
- Ghost D-branes
- On gravitational echoes from ultracompact exotic stars
- Kerr-Newman-NUT-Kiselev black holes in Rastall theory of gravity and Kerr/CFT Correspondence
- The Chaplygin dark star
- On gravitational-wave echoes from neutron-star binary coalescences
- Exact dark energy star solutions
- The Dark Energy Star and Stability analysis
- Wormhole supported by dark energy admitting conformal motion
- Stable Schwarzschild stars as black-hole mimickers
- On Anisotropic Dark Energy
- Gravitational wave echoes from strange stars
- Kerr/CFT Correspondence on Kerr-Newman-NUT-Quintessence Black Hole
- Convection and cracking stability of spheres in General Relativity
- Dynamics of Charged and Rotating NUT Black Holes in Rastall Gravity
- Dark energy-like stars from nonminimally coupled scalar field
- CFT Duals on Rotating Charged Black Holes Surrounded by Quintessence
- Charged perfect fluid configurations with a dilaton field
- On the use of black hole binaries as probes of local dark energy properties
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- Radial pulsations, moment of inertia and tidal deformability of dark energy stars
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- Non-radial oscillations in anisotropic dark energy stars
- Rotating black holes and exotic compact objects in the Kerr/CFT correspondence within Rastall gravity
- Moduli stabilization with bulk scalar in nested doubly warped braneworld model
- Graviton Condensate Stars and Its Gravitational Echoes
- Near-extremal Kerr-like ECO in the Kerr/CFT Correspondence in Higher Spin Perturbations