We study scattering properties of a PT-symmetric square well potential with real depth larger than the threshold of particle-antiparticle pair production as the time component of a vector potential in the Dirac equation. Spontaneous pair production inside the well becomes tiny beyond the strength at which discrete bound states with real energies disappear, consistently with a spontaneous breakdown of PT symmetry.
|Titolo:||Overcritical PT-Symmetric Square Well Potential in the Dirac Equation|
|Data di pubblicazione:||1-feb-2008|
|Appare nelle tipologie:||1.1 Articolo in rivista|