We construct a new brane-world model composed of a bulk –with a dilatonic field– , plus a brane –with brane tension coupled to the dilaton , cold dark matter and an induced gravity term .
It is possible to show that depending on the nature of the coupling between the brane tension and the dilaton this model can describe the late-time acceleration of the brane expansion ( for the normal branch ) as it moves within the bulk .
The acceleration is produced together with a mimicry of the crossing of the cosmological constant line ( w = -1 ) on the brane , although this crossing of the phantom divide is obtained without invoking any phantom matter neither on the brane nor in the bulk .
The role of dark energy is played by the brane tension , which reaches a maximum positive value along the cosmological expansion of the brane .
It is precisely at that maximum that the crossing of the phantom divide takes place .
We also show that these results remain valid when the induced gravity term on the brane is switched off .