Complex Density of Continuum States in Resonant Quantum Tunneling
Complex Density of Continuum States in Resonant Quantum Tunneling
We introduce a complex-extended continuum level density and apply it to one-dimensional scattering problems involving tunneling through finite-range potentials. We show that the real part of the density is proportional to a real "time shift" of the transmitted particle, while the imaginary part reflects the imaginary time of an instanton-like …