The European Physical Journal B

, 86:231

Klein tunneling of two correlated bosons

Regular Article

DOI: 10.1140/epjb/e2013-40154-8

Cite this article as:
Longhi, S. & Della Valle, G. Eur. Phys. J. B (2013) 86: 231. doi:10.1140/epjb/e2013-40154-8


Reflection of two strongly interacting bosons with long-rage interaction hopping on a one-dimensional lattice scattered off by a potential step is theoretically investigated in the framework of the extended Hubbard model. The analysis shows that, in the presence of unbalanced on-site and nearest-neighbor site interaction, two strongly correlated bosons forming a bound particle state can penetrate a high barrier, despite the single particle can not. Such a phenomenon is analogous to one-dimensional Klein tunneling of a relativistic massive Dirac particle across a potential step.


Mesoscopic and Nanoscale Systems

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Dipartimento di Fisica, Politecnico di Milano and Istituto di Fotonica e Nanotecnologie del Consiglio Nazionale delle RicercheMilanoItaly