Reflection of two strongly interacting bosons with long-rage interaction hopping on a onedimensional 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 nearestneighbor 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.

Klein tunneling of two correlated bosons

LONGHI, STEFANO;DELLA VALLE, GIUSEPPE
2013-01-01

Abstract

Reflection of two strongly interacting bosons with long-rage interaction hopping on a onedimensional 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 nearestneighbor 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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/728178
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