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Published in:
2005 | OriginalPaper | Chapter
DMRG Investigation of Stripe Formation in Doped Hubbard Ladders
Authors : Georg Hager, Gerhard Wellein, Eric Jeckelmann, Holger Fehske
Published in: High Performance Computing in Science and Engineering, Munich 2004
Publisher: Springer Berlin Heidelberg
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Using a parallelized density matrix renormalization group (DMRG) code we demonstrate the potential of the DMRG method by calculating ground-state properties of two-dimensional Hubbard models. For 7 × 6, 11 × 6 and 14 × 6 Hubbard ladders with doped holes and cylindrical boundary conditions (BC), open in
x
-direction and periodic in the 6-leg
y
-direction, we comment on recent conjectures about the appearance of stripe-like features in the hole and spin densities. In addition we present results for the half-filled 4 ×4 system with periodic BC, advance to the 6 × 6 case and pinpoint the limits of the current approach.