Study on the one-dimensional asymmetric Hubbard model – Niels Bohr Institute - University of Copenhagen

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Niels Bohr Institute > Calendar > 2008 > Study on the one-dimen...

Study on the one-dimensional asymmetric Hubbard model

Speaker: Marco Casadei, University of Bologna. 

The phase diagram of the one-dimensional asymmetric Hubbard model is investigated with the DMRG approach. Special attention is put on researching the phase transition, foreseen from a bosonization study, from spin density to charge density wave for finite difference of the hopping coefficient and attractive interaction.  The results are showing  the absence of the transition, supporting the previous mean field analysis, in disagreement with the bosonization one