Generalised DBI-Quintessence
  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; $-1 \le \omega \le 1$. 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.
