Nonsingular rainbow universes
نویسندگان
چکیده
منابع مشابه
Nonsingular models of universes in teleparallel theories.
Different models of universes are considered in the context of teleparallel theories. Assuming that the universe is filled by a fluid with an equation of state P=-ρ-f(ρ), for different teleparallel theories and different equation of state we study its dynamics. Two particular cases are studied in detail: in the first one we consider a function f with two zeros (two de Sitter solutions) that mim...
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We examine the possibility that time dependence might remove the singular nature of global string spacetimes. We first show that this time dependence takes a specific form – a de-Sitter like expansion along the length of the string and give an argument for the existence of such a solution, estimating the rate of expansion. We compare our solution to the singular Cohen-Kaplan spacetime. PACS num...
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ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2013
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2013/10/052