Conformal Vector Fields On Projectively Flat $(\alpha,\beta)$-Finsler   Spaces
  In this paper, it is proved that any conformal vector field is homothetic on a locally projectively flat $(\alpha,\beta)$-space of non-Randers type in dimension $n\ge 3$, and the local solutions of such a vector field are determined. While on a locally projectively flat Randers space, examples showthat the conformal vector fields are not necessarily homothetic. 
Guojun Yang
math.DG