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- W2081065716 abstract "A model for a spatially flat homogeneous and isotropic Universe whose gravitational sources are a pressureless matter field and a tachyon field non-minimally coupled to the gravitational field is analyzed. Noether symmetry is used to find the expressions for the potential density and for the coupling function, and it is shown that both must be exponential functions of the tachyon field. Two cosmological solutions are investigated: (i) for the early Universe whose only source of the gravitational field is a non-minimally coupled tachyon field which behaves as an inflaton and leads to an exponential accelerated expansion and (ii) for the late Universe whose gravitational sources are a pressureless matter field and a non-minimally coupled tachyon field which plays the role of dark energy and is the responsible of the decelerated-accelerated transition period." @default.
- W2081065716 created "2016-06-24" @default.
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- W2081065716 date "2009-06-08" @default.
- W2081065716 modified "2023-09-27" @default.
- W2081065716 title "Constraining non-minimally coupled tachyon fields by the Noether symmetry" @default.
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- W2081065716 doi "https://doi.org/10.1088/0264-9381/26/13/135008" @default.
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