May 29, 2013

Coupled particles cross energy wall

Model demonstrates that it is possible for two particles to cross an energy barrier together, where a single particle could not

For the first time, a new kind of so-called Klein tunnelling—representing the quantum equivalent of crossing an energy wall— has been presented in a model of two interacting particles. This work by Stefano Longhi and Giuseppe Della Valle from the Institute of Photonics and Nanotechnology in Milan, Italy, is about to be published in EPJ B.