Results 81 to 90 of about 17,519 (197)

Fixed points and FLRW cosmologies: Flat case [PDF]

open access: yesPhysical Review D, 2013
We use phase space method to study possible consequences of fixed points in flat FLRW models. One of these consequences is that a fluid with a finite sound speed, or a differentiable pressure, reaches a fixed point in an infinite time and has no finite-time singularities of types I, II and III described in hep-th/0501025.
openaire   +2 more sources

Dynamics and constraints of the unified dark matter flat cosmologies [PDF]

open access: green, 2008
Spyros Basilakos   +1 more
openalex   +1 more source

Is There a Flatness Problem in Classical Cosmology? [PDF]

open access: yes, 2014
I briefly review the flatness problem within the context of classical cosmology and examine some of the debate in the literature with regard to its definition and even the question whether it exists. I then present some new calculations for cosmological models which will collapse in the future; together with previous work by others for models which ...
openaire   +3 more sources

100 years of mathematical cosmology: Models, theories and problems, Part B. [PDF]

open access: yesPhilos Trans A Math Phys Eng Sci, 2022
Cotsakis S, Yefremov AP.
europepmc   +1 more source

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