Posted on 17 July 2017
In everyday life, objects travel in the same direction as their momentum – a car in forward motion is going forwards, and certainly not backwards.
However, this is no longer true on microscopic scales - quantum particles can partially go into reverse and travel in the direction opposite to their momentum. This unique property is known as ‘backflow’.
Quantum backflow and scattering by Dr Henning Bostelmann (University of York), Daniela Cadamuro (TU Munich) and Gandalf Lechner (Cardiff University) is published in Physical Review A. To read, visit: https://link.aps.org/doi/10.1103/PhysRevA.96.012112. This research was supported by a LMS Research in Pairs grant, Ref. 41607.