Noether symmetry approach for Dirac–Born–Infeld cosmology

2015

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DOI 10.1142/s0219887815500656
Data confidence 70 medium
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Abstract

We consider the Noether Symmetry Approach for a cosmological model derived from a tachyon scalar field T with a Dirac–Born–Infeld Lagrangian and a potential V(T). Furthermore, we assume a coupled canonical scalar field ϕ with an arbitrary interaction potential B(T, ϕ). Exact solutions are derived consistent with the accelerated behavior of cosmic fluid.