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Título: | The Black Hole Universe, Part I |
Autor: | Gaztañaga, Enrique CSIC ORCID | Palabras clave: | Cosmology Black holes Dark energy General relativity |
Fecha de publicación: | 2022 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Symmetry 14(9): 1849 (2022) | Resumen: | The original Friedmann (1922) and Lemaitre (1927) cosmological model corresponds to a classical solution of General Relativity (GR), with the same uniform (FLRW) metric as the standard cosmology, but bounded to a sphere of radius R and empty space outside. We study the junction conditions for R to show that a co-moving observer, like us, located anywhere inside R, measures the same background and has the same past light-cone as an observer in an infinite FLRW with the same density. We also estimate the mass M inside R and show that in the observed universe R<rS≡2 GM, which corresponds to a Black Hole Universe (BHU). We argue that this original Friedmann–Lemaitre model can explain the observed cosmic acceleration without the need of Dark Energy, because rS acts like a cosmological constant Λ=3/r2S. The same solution can describe the interior of a stellar or galactic BHs. In co-moving coordinates the BHU is expanding while in physical or proper coordinates it is asymptotically static. Such frame duality corresponds to a simple Lorentz transformation. The BHU therefore provides a physical BH solution with an asymptotically deSitter metric interior that merges into a Schwarzschild metric exterior without discontinuities. | Descripción: | This article belongs to the Special Issue Nature and Origin of Dark Matter and Dark Energy. | Versión del editor: | https://doi.org/10.3390/sym14091849 | URI: | http://hdl.handle.net/10261/295941 | DOI: | 10.3390/sym14091849 | E-ISSN: | 2073-8994 |
Aparece en las colecciones: | (ICE) Artículos |
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blackhole1.pdf | 1,45 MB | Adobe PDF | Visualizar/Abrir |
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