Klein tunneling of two correlated bosons
- First Online:
- Cite this article as:
- Longhi, S. & Della Valle, G. Eur. Phys. J. B (2013) 86: 231. doi:10.1140/epjb/e2013-40154-8
- 320 Downloads
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.