Supercriticality and transmission resonances in the dirac equation
It is shown that a Dirac particle of mass m and arbitrarily small momentum will tunnel without reflection through a potential barrier V = U(c)(x) of finite range provided that the potential well V = -U(c)(x) supports a bound state of energy E = -m. This is called a supercritical potential well.
Dombey
N
Centre for Theoretical Physics, University of Sussex, Brighton BN1 9QJ, United Kingdom.
Kennedy
P
Calogeracos
A