Relativistic free-motion time-of-arrival
Zhi-Yong Wang, Cai-Dong Xiong
Relativistic free-motion time-of-arrival theory for massive spin-1/2 particles is systematically developed. Contrary to the nonrelativistic time-of-arrival operator studied thoroughly in the previous literatures, the relativistic time-of-arrival operator possesses self-adjoint extensions because of the particle–antiparticle symmetry. The nonrelativistic limit of our theory is in agreement with the nonrelativistic time-of-arrival theory.
arXiv:quant-ph/0608031•Journal of Physics A Mathematical and Theoretical•Feb 6, 2007•6 citations