A braneworld universe from colliding bubbles
نویسندگان
چکیده
منابع مشابه
A Braneworld Universe From Colliding Bubbles
Much work has been devoted to the phenomenology and cosmology of the socalled braneworld universe, where the (3+1)-dimensional universe familiar to us lies on a brane surrounded by a (4+1)-dimensional bulk spacetime that is essentially empty except for a negative cosmological constant and the various modes associated with gravity. For such a braneworld cosmology, the difficulty of justifying a ...
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We compute the cosmological perturbations generated in the colliding bubble braneworld universe in which bubbles filled with five-dimensional antide Sitter space (AdS5) expanding within a five dimensional de Sitter space (dS5) or Minkowski space (M5) collide to form a (3+1) dimensional local brane on which the cosmology is virtually identical to that of the RandallSundrum model. The perturbatio...
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One of the aims of braneworld cosmology is to identify a ‘smoking gun’ for the existence of large extra dimensions by means of observations of the early universe. Braneworld cosmology has succeeded in reproducing the conventional cosmology at late times in a higher-dimensional context, but finding a unique observational signature has proved elusive. Here we demonstrate that the recently propose...
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We construct an exact solution describing the collision of two Kaluza-Klein “bubbles of nothing” in 3+1 dimensions. When the bubbles collide, a curvature singularity forms which is hidden inside an event horizon. However, unlike the formation of ordinary black holes, in this case the spacetime resembles the entire maximally extended Schwarzschild solution. We also point out that there are inequ...
متن کاملBlack hole formation from colliding bubbles
Some indication of conditions that are necessary for the formation of black holes from the collision of bubbles during a supercooled phase transition in the the early universe are explored. Two colliding bubbles can never form a black hole. Three colliding bubbles can refocus the energy in their walls to the extent that it becomes infinite. 98.80Cq, 04.60.+n, 97.60.Lf Typeset using REVTEX
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(02)01325-4