Relativistic quantum backflow

In this paper we discuss relativistic quantum backflow. The general theory of relativistic backflow is presented and it is shown that the backflow can be written as a function of a simple parameter ϵ, which is defined in terms of fundamental constants and the backflow period. Backflow eigenfunctions...

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Bibliographic Details
Published in:Physica scripta 2019-12, Vol.94 (12), p.125107
Main Authors: Ashfaque, J, Lynch, J, Strange, P
Format: Article
Language:English
Subjects:
backflow
quantum
relativistic
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Summary:In this paper we discuss relativistic quantum backflow. The general theory of relativistic backflow is presented and it is shown that the backflow can be written as a function of a simple parameter ϵ, which is defined in terms of fundamental constants and the backflow period. Backflow eigenfunctions are determined numerically for a range of values of ϵ, and an explicit expression for the relativistic backflow eigenvalue in terms of the non-relativistic backflow constant is presented. Backflow eigenvectors are then fitted with some standard functions, which lead to substantially higher backflow than has been found previously with fitting procedures, for some values of ϵ. In analysing the non-relativistic limit of the theory we show that this problem is one of those rare cases where the relativistic theory is intrinsically more simple than the non-relativistic theory.
ISSN:0031-8949
1402-4896
DOI:10.1088/1402-4896/ab265c