We show that, contrary to the statements made by many authors, the backflow is not a
nonclassical effect. The backflow is a characteristic feature of solutions of the wave …

Quantum backflow refers to the counterintuitive fact that the probability can flow in the
direction opposite to the momentum of a quantum particle. This phenomenon has been seen …

Consider a scenario where a quantum particle is initially prepared in some bounded region
of space and left to propagate freely. After some time, we verify if the particle has reached …

Criticisms and a claim in the recent paper Backflow in relativistic wave equations by
Bialynicki–Birula et al 2022 J. Phys. A: Math. Theor. 55 255702 are addressed, and it is …

Decoherence is a well established process for the emergence of classical mechanics in
open quantum systems. However, it can have two different origins or mechanisms …

We study the quantum backflow problem for a massless charged Dirac fermion constrained
to move on a ring of radius R. Using the relativistic current operator for states of definite …

Quantum backflow is the unexpected effect that wavepackets consisting of only positive
momentum components can apparently move in the negative direction. This is usually …

We consider a scenario where a non-relativistic one-dimensional quantum particle is
prepared in some bounded region of space and left to propagate freely. After a certain …

The probability density of a quantum particle moving freely within a circular ring can exhibit
local flow patterns inconsistent with its angular momentum, a phenomenon known as …

Quantum backflow, discovered quite a few years back, is a generic purely quantum
phenomenon, in which the probability of finding a particle in a direction is nonzero (and …