Assisted Tachyonic Inflation
  The model of inflation with a single tachyon field generates larger anisotropy and has difficulties in describing the formation of the Universe . In this paper we consider a model with multi tachyon fields and study the assisted inflationary solution. Our results show that this model satisfies the observation. 
Yun-Song Piao, Rong-Gen Cai, Xinmin Zhang and Yuan-Zhong Zhang