Vector particles tunneling from BTZ black holes
  In this paper we investigate vector particles' Hawking radiation from a BTZ black hole. By applying the WKB approximation and the Hamilton-Jacobi Ansatz to the Proca equation, we obtain the tunneling spectrum of vector particles. The expected Hawking temperature is recovered. 
Ge-Rui Chen, Shiwei Zhou, and Yong-Chang Huang
gr-qc