منابع مشابه
Anisotropic dark energy stars
A model of compact object coupled to inhomogeneous anisotropic dark energy is studied. It is assumed a variable dark energy that suffers a phase transition at a critical density. The anisotropic Λ−Tolman-Oppenheimer-Volkoff equations are integrated to know the structure of these objects. The anisotropy is concentrated on a thin shell where the phase transition takes place, while the rest of the...
متن کاملOn Anisotropic Dark Energy Stars
Abstract Anisotropic pressure dark energy stars are recently proposed as an alternative model to gravastar. However, the nature’s classification of the fluid was based on the interval of the parameter ω, defined by the state equation that comes directly from the isotropic pressure Friedmann cosmological models. This procedure is not correct. In this work we propose a generalization of the limit...
متن کاملComment to “On Anisotropic Dark Energy Stars”
The authors of the paper “On Anisotropic Dark Energy Stars”, arXiv:0803.2508 [gr-qc], consider the equations of state pr = ωρ and pt = ωρ, ignoring the fact that this implies an isotropic pressure, which places strict restrictions on the values of ω. The authors then argue for an anisotropic pressure fluid throughout their work, and apply these equations of state to the energy conditions, conse...
متن کاملDark Energy and Condensate Stars: Casimir Energy in the Large
Vacuum fluctuations and the Casimir effect are considered in a cosmological setting. It is suggested that the dark energy, which recent observations suggest make up 73% of our universe, is vacuum energy due to a causal boundary effect at the cosmological horizon. After a discussion of the similarities and differences between material boundaries in flat spacetime and causal horizons in general r...
متن کاملComments on the proposal of Dark Energy Stars by Chapline
We point out that the contentions of Chapline (astro-ph/0503200)[1] that (i) General Relativity (GR) is in conflict with Quantum Mechanics (QM) and (ii) GR fails even on macroscopic length scales are incorrect and based on (i) misunderstanding of GR and (ii) completely misconceived “thought experiments”. Even without introduction of any QM, GR actually does not allow formation of any Event Hori...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 2006
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/23/5/006