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Phase separation in t-J ladders
Stefan Rommer, Steven R. White, D. J. Scalapino
The phase separation boundary of isotropic t-J ladders is analyzed using density matrix renormalization group techniques. The complete boundary to phase separation as a function of…
Full-CI Quantum Chemistry using the Density-Matrix Renormalization Group
S. Daul, I. Ciofini, C. Daul +1
We describe how density-matrix renormalization group (DMRG) can be used to solve the full-CI problem in quantum chemistry. As an illustration of the potential of this method, we ap…
Effect of the W-term for a t-U-W Hubbard ladder
S. Daul, D. J. Scalapino, Steven R. White
Antiferromagnetic and d_{x2-y2}-pairing correlations appear delicately balanced in the 2D Hubbard model. Whether doping can tip the balance to pairing is unclear and models with ad…
Phase separation and stripe formation in the 2D t-J model: a comparison of numerical results
Steven R. White, D. J. Scalapino
We make a critical analysis of numerical results for and against phase separation and stripe formation in the t-J model. We argue that the frustrated phase separation mechanism for…
The one-dimensional Bose-Hubbard Model with nearest-neighbor interaction
Till D. Kuehner, Steven R. White, H. Monien
We study the one-dimensional Bose-Hubbard model using the Density-Matrix Renormalization Group (DMRG).For the cases of on-site interactions and additional nearest-neighbor interact…
Metal-insulator transition in the one-dimensional Holstein model at half filling
Eric Jeckelmann, Chunli Zhang, Steven R. White
We study the one-dimensional Holstein model with spin-1/2 electrons at half-filling. Ground state properties are calculated for long chains with great accuracy using the density ma…