Delay time and tunneling transient phenomena

Details Delay time and tunneling transient phenomena Delay time and tunneling transient phenomena

2002-10-01

arxiv.org/abs/quant-ph/0210008v1

Physics

Quantum Physics

To be published in Physical Review A

Scientific paper

10.1103/PhysRevA.66.032104

Analytic solutions to the time-dependent Schr\"odinger equation for cutoff wave initial conditions are used to investigate the time evolution of the transmitted probability density for tunneling. For a broad range of values of the potential barrier opacity $\alpha$, we find that the probability density exhibits two evolving structures. One refers to the propagation of a {\it forerunner} related to a {\it time domain resonance} [Phys. Rev. A {\bf 64}, 0121907 (2001)], while the other consists of a semiclassical propagating wavefront. We find a regime where the {\it forerunners} are absent, corresponding to positive {\it time delays}, and show that this regime is characterized by opacities $\alpha < \alpha_c$. The critical opacity $\alpha_c$ is derived from the analytical expression for the {\it delay time}, that reflects a link between transient effects in tunneling and the {\it delay time}

Affiliated with

Also associated with

No associations

Rating

Delay time and tunneling transient phenomena does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Delay time and tunneling transient phenomena, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delay time and tunneling transient phenomena will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-165339