Zitterbewegung and its significance for the Hawking radiation
  The Hawking radiation can be viewed from very different perspectives, not all of which can be proved to be rigorously equivalent to one another. On the other hand, an old interest in the zitterbewegung (ZB) of the Dirac electron has recently been rekindled by the investigations on spintronics and graphene, etc. In this letter, we show that, if particles emitted by black holes are electrons or positrons, one can also regard the Hawking radiation as a ZB process. 
Zhi-Yong Wang, Cai-Dong Xiong, Qi Qiu
quant-ph gr-qc