An interpretation of tunneling time

Campi, Morris; Cohen, Marvin M.

doi:10.1109/t-ed.1970.16941

Cited by 11 publications

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“…= 0, if we compare the moments of time, when the maxima of the packets are at the turning points. This was first announced in [89] but basing on this fact concluded that the tunneling time in semiclassical approximation is zero. In our opinion, being zero, the quantity t = 0 just show that the delay of wave packets within the region of finite potential appears due to purely quantum effects, being vanishing in semiclassical approximation.…”

Section: Characteristics Of Time For Scattering Of a Wave Packet Withmentioning

confidence: 97%

“…= 0, if we compare the moments of time, when the maxima of the packets are at the turning points. This was first announced in [89] but basing on this fact concluded that the tunneling time in semiclassical approximation is zero. In our opinion, being zero, the quantity t (scl) T , as well as t T , can hardly be considered as appropriate characteristic of the time passage of the barrier.…”

Section: Characteristics Of Time For Scattering Of a Wave Packet With...mentioning

confidence: 97%

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Time delays and advances in classical and quantum systems

Kolomeitsev

Voskresensky

2013

J. Phys. G: Nucl. Part. Phys.

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The paper reviews positive and negative time delays in various processes of classical and quantum physics. In the beginning, we demonstrate how a time-shifted response of a system to an external perturbation appears in classical mechanics and classical electrodynamics. Then we quantify durations of various quantum mechanical processes. The duration of the quantum tunneling is studied. An interpretation of the Hartman paradox is suggested. Time delays and advances appearing in the three-dimensional scattering problem on a central potential are considered. Then we discuss delays and advances appearing in quantum field theory and after that we focus on the issue of time delays and advancements in quantum kinetics. We discuss problems of the application of generalized kinetic equations in simulations of the system relaxation towards equilibrium and analyze the kinetic entropy flow. Possible measurements of time delays and advancements in experiments similar to the recent OPERA neutrino experiment are also discussed.

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Section: Characteristics Of Time For Scattering Of a Wave Packet Withmentioning

confidence: 97%

“…= 0, if we compare the moments of time, when the maxima of the packets are at the turning points. This was first announced in [89] but basing on this fact concluded that the tunneling time in semiclassical approximation is zero. In our opinion, being zero, the quantity t (scl) T , as well as t T , can hardly be considered as appropriate characteristic of the time passage of the barrier.…”

Section: Characteristics Of Time For Scattering Of a Wave Packet With...mentioning

confidence: 97%