Cr. Leavens et Wr. Mckinnon, AN EXACT DETERMINATION OF THE MEAN DWELL TIME-BASED ON THE QUANTUM CLOCK OF SALECKER AND WIGNER, Physics letters. A, 194(1-2), 1994, pp. 12-20
A modification of the Salecker-Wigner quantum clock leads to precisely
the expected result for the mean dwell time. However, the mean transm
ission and reflection times that apparently emerge naturally from the
theoretical analysis can have unphysical properties. A relativistic an
alysis using the Dirac equation supports this conclusion.