RECONSTRUCTING A STRING-INSPIRED NONMINIMALLYCOUPLED QUINTOM MODEL

摘要

Motivated by the recent work of Zhang and Chen,1 we generalize their work to thenonminimally coupled case. We consider a quintom model of dark energy with a singlescalar field T given by a Lagrangian inspired by a tachyonic Lagrangian in string theory.We consider nonminimal coupling of the tachyon field to the scalar curvature, and thenwe reconstruct this model in the light of three forms of parametrization for dynamicaldark energy.