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Quantum Phases in the Honeycomb-Lattice -- Ferro-Antiferromagnetic Model
Shengtao Jiang, Steven R. White, A. L. Chernyshev
Using large-scale density-matrix renormalization group calculations and minimally augmented spin-wave theory, we demonstrate that the phase diagram of the quantum $…
Density-matrix-renormalization-group-based downfolding of the three-band Hubbard model: the importance of density-assisted hopping
Shengtao Jiang, Douglas J. Scalapino, Steven R. White
Typical Wannier-function downfolding starts with a mean-field or density functional set of bands to construct the Wannier functions. Here we carry out a controlled approach, using…
Where is the Quantum Spin Nematic?
Shengtao Jiang, Judit Romhányi, Steven R. White +2
We provide strong evidence of the spin-nematic state in a paradigmatic ferro-antiferromagnetic -- model using analytical and density-matrix renormalization group methods.…
Constructing Hubbard Models for the Hydrogen Chain using Sliced Basis DMRG
Randy C. Sawaya, Steven R. White
Sliced-basis DMRG(sb-DMRG) is used to simulate a chain of hydrogen atoms and to construct low-energy effective Hubbard-like models. The downfolding procedure first involves a chang…
Ground State Phase Diagram of the -- model
Shengtao Jiang, Douglas J. Scalapino, Steven R. White
We report results of large scale ground state density matrix renormalization group(DMRG) calculations on -- cylinders with circumferences 6 and 8. We determine a rough ph…
Matrix product state recursion methods for strongly correlated quantum systems
Yifan Tian, Steven R. White
We present a method for extrapolation of real-time dynamical correlation functions which can improve the capability of matrix product state methods to compute spectral functions. U…