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Stripes in a three-chain Hubbard ladder: a comparison of density-matrix renormalization group and constrained-path Monte Carlo results
J. Bonca, J. E. Gubernatis, M. Guerrero +2
Using both the density-matrix renormalization group method and the constrained-path quantum Monte Carlo method, we have studied the ground-state energies and the spin and hole dens…
Density matrix renormalization group study of the polaron problem in the Holstein model
Eric Jeckelmann, Steven R. White
We propose a new density matrix renormalization group (DMRG) approach to study lattices including bosons. The key to the new approach is an exact mapping of a boson site containing…
Density Matrix Approach to Local Hilbert Space Reduction
Chunli Zhang, Eric Jeckelmann, Steven R. White
We present a density matrix approach for treating systems with a large or infinite number of degrees of freedom per site with exact diagonalization or the density matrix renormaliz…
Ground State Properties of the Doped 3-Leg t-J Ladder
Steven R. White, D. J. Scalapino
Results for a doped 3-leg t-J ladder obtained using the density matrix renormalization group are reported. At low hole doping, the holes form a dilute gas with a uniform density. T…
DMRG Study of the Striped Phase in the 2D t-J model
Steven R. White, D. J. Scalapino
Using the density matrix renormalization group (DMRG), we study the 2D t-J model at a hole doping of x=1/8 on clusters as large as 19x8. We find a striped phase which is consistent…
Spin Gap in a Doped Kondo Chain
Arnold E. Sikkema, Ian Affleck, Steven R. White
We show that the Kondo chain away from half-filling has a spin gap upon the introduction of an additional direct Heisenberg coupling between localized spins. This is understood in…