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The dependence of the time delay on the shape of the wave packet tunneling through the potential barrier

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Abstract

The problem of quasi-monochromatic wave packet tunneling through a potential rectangular barrier is studied. It is shown that the approach to calculating the time delay of a wave packet called ``phase time’’ is not universally correct though well known in the literature. In this paper we discuss the mathematical reasons for this discrepancy, and substantiate another, more correct analytical method for calculating the time delay in the approximation of wide barriers. This time depends on the shape of the envelope complex wave function falling on the barrier. Analytical results for the Gaussian wave packet are presented.

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  1. Rzhanov Institute of Semiconductor Physics SB RAS 13, Lavrentyev Ave., Novosibirsk, 630090, Russia

    Andrey A. Bocharov

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  1. Andrey A. Bocharov
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Correspondence to Andrey A. Bocharov.

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Bocharov, A.A. The dependence of the time delay on the shape of the wave packet tunneling through the potential barrier. Eur. Phys. J. D 74, 143 (2020). https://doi.org/10.1140/epjd/e2020-10045-4

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  • DOI: https://doi.org/10.1140/epjd/e2020-10045-4

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