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arXiv · 0904.0472

Generalised DBI-Quintessence

Burin Gumjudpai·John Ward
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Abstract

We investigate the phase space of a quintessence theory governed by a generalised version of the DBI action, using a combination of numeric and analytic methods. The additional degrees of freedom lead to a vastly richer phase space structure, where the field covers the full equation of state parameter space; $-1 \le ω\le 1$. We find many non-trivial solution curves to the equations of motion which indicate that DBI quintessence is an interesting candidate for a viable k-essence model.

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Burin Gumjudpai, John Ward. 2009-04-03. Generalised DBI-Quintessence. https://doi.org/10.1103/physrevd.80.023528

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