We propose a new scenario for early cosmology , where an inflationary de Sitter phase is obtained with a ghost condensate .
The transition to radiation dominance is triggered by the ghost itself , without any slow-roll potential .
Density perturbations are generated by fluctuations around the ghost condensate and can be reliably computed in the effective field theory .
The fluctuations are scale invariant as a consequence of the de Sitter symmetries , however , the size of the perturbations are parametrically different from conventional slow-roll inflation , and the inflation happens at far lower energy scales .
The model makes definite predictions that distinguish it from standard inflation , and can be sharply excluded or confirmed by experiments in the near future .
The tilt in the scalar spectrum is predicted to vanish ( n _ { s } = 1 ) , and the gravity wave signal is negligible .
The non-Gaussianities in the spectrum are predicted to be observable : the 3-point function is determined up to an overall { \cal O } ( 1 ) 
constant , and its magnitude is much bigger than in conventional inflation , with an equivalent f _ { NL } \simeq 100 , not far from the present WMAP bounds .