摘要：We consider a hybrid scalar field which is nonminimally coupled to the matter and models
a chameleon cosmology. By introducing an effective potential, we study the dependence of the
effective potential's minimum and hybrid chameleon field's masses on the local matter density. In a
dynamical system technique, we analyze the phase space of this two-field chameleon model, find its
fixed points and study their stability. We show that the hybrid chameleon domination solution is a
stable attractor and the universe in this setup experiences a phantom divide crossing.
