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gr-qc2013★ 39 cited
Soft singularity crossing and transformation of matter properties
Zoltán Keresztes, László Á. Gergely, Alexander Yu. Kamenshchik +2
We investigate particular cosmological models, based either on tachyon fields or on perfect fluids, for which soft future singularities arise in a natural way. Our main result is t…
astro-ph.CO2013★ 1 cited
Past and future of some universes
David Polarski
We consider a class of toy models where a spatially flat universe is filled with a perfect fluid. The dynamics is found exactly for all these models. In one family, the perfect flu…