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Double layer Hubbard model: off-diagonal long range order in the nodeless d-wave channel

Morgenstern, Ingo ; Husslein, Thomas ; Singer, Johannes Maria ; Matuttis, H. G.



Abstract

We report on a numerical study of the double layer Hubbard model describing the CuO 2 sheets in the high- $T_{\rm c}$ oxides. For the simulation we employed the projector quantum Monte Carlo method (PQMC) to study the ground state properties of this correlated electron system. Our results provide evidence for off-diagonal long range order in the nodeless d-wave channel. The implications with ...

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