Quintom dark energy in DGP braneworld cosmology

In this paper we consider a Z2 symmetrical 3-brane embedded in a 5-dimensional spacetime. We study the effective Einstein equation and acceleration condition in presence of the quintom dark energy fluid as the bulk matter field. The effective Einstein equation on the brane in the framework of DGP model is obtained where the quintom field is considered as the bulk matter field, and a quintom dark energy confined on the brane, respectively. It is indicated that in DGP model with a quintom dark energy fluid in the bulk space and for spatially flat metric, one can obtain an asymptotically static universe, and the self acceleration solution in the late universe, respectively for two different embedding of the brane ǫ = −1 and ǫ = 1. Finally we show that such behavior occurs also, when quintom dark energy is confined on the brane.