135 citations · 260 across the 5 of their papers we have counts for
4 papers · 1 filter
Chebyshev matrix product state approach for spectral functions
Andreas Holzner, Andreas Weichselbaum, Ian P. McCulloch +2
We show that recursively generated Chebyshev expansions offer numerically efficient representations for calculating zero-temperature spectral functions of one-dimensional lattice m…
Correlation density matrices for 1- dimensional quantum chains based on the density matrix renormalization group
W. Münder, A. Weichselbaum, A. Holzner +2
A useful concept for finding numerically the dominant correlations of a given ground state in an interacting quantum lattice system in an unbiased way is the correlation density ma…
Kondo screening cloud in the single-impurity Anderson model: A density matrix renormalization group study
Andreas Holzner, Ian P. McCulloch, Ulrich Schollwöck +2
A magnetic moment in a metal or in a quantum dot is, at low temperatures, screened by the conduction electrons through the mechanism of the Kondo effect. This gives rise to spin-sp…
Matrix product state approach for a two-lead, multi-level Anderson impurity model
Andreas Holzner, Andreas Weichselbaum, Jan von Delft
We exploit the common mathematical structure of the numerical renormalization group and the density matrix renormalization group, namely, matrix product states, to implement an eff…