Universal procedure to cure future singularities of dark energy models |
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Authors: | A J López-Revelles E Elizalde |
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Institution: | 1.Instituto de Ciencias del Espacio (ICE/CSIC),Bellaterra, Barcelona,Spain;2.Facultat de Ciències,Institut d’Estudis Espacials de Catalunya (IEEC),Bellaterra, Barcelona,Spain |
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Abstract: | A systematic search for different viable models of the dark energy universe, all of which give rise to finite-time, future
singularities, is undertaken, with the purpose to try to find a solution to this common problem. After some work, a universal
procedure to cure all future singularities is developed and carefully tested with the help of explicit examples corresponding
to each one of the four different types of possible singularities, as classified in the literature. The cases of a fluid with
an equation of state which depends on some parameter, of modified gravity non-minimally coupled to a matter Lagrangian, of
non-local gravity, and of isotropic turbulence in a dark fluid universe theory are investigated in detail. |
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