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Finite Temperature Density Matrix Renormalization using an enlarged Hilbert space
A. E. Feiguin, Steven R. White
We apply a generalization of the time-dependent DMRG to study finite temperature properties of several quantum spin chains, including the frustrated model. We discuss sev…
Density matrix renormalization group algorithms with a single center site
Steven R. White
We develop a correction to the density matrix used in density matrix renormalization group calculations to take into account the incompleteness of the environment block. The correc…
Measuring orbital interaction using quantum information theory
J. Rissler, R. M. Noack, S. R. White
Quantum information theory gives rise to a straightforward definition of the interaction of electrons in two orbitals , for a given many-body wave function. A conv…
Time-step targetting methods for real-time dynamics using DMRG
Adrian E. Feiguin, Steven R. White
We present a time-step targetting scheme to simulate real-time dynamics efficiently using the density matrix renormalization group (DMRG). The algorithm works on ladders and system…