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Limitations of the stochastic diagonalization and the projector QMC in the 2D Hubbard model

Fettes, Werner ; Morgenstern, Ingo
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Date of publication of this fulltext: 16 Aug 2010 12:32


Abstract

In the many particle physics the exact diagonalization (ED) is limited to small system sizes, like 4×4, on account of the restrictions of the computer memory. Whereas the stochastic diagonalization (SD) and the projector quantum Monte Carlo (PQMC) are not limited to a certain system size the limits in the parameter space of the analyzed physical model are at hoc not clear. For the ...

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