20 citations · 20 across the 1 of their papers we have counts for
4 papers
Tensor Product Approximation (DMRG) and Coupled Cluster method in Quantum Chemistry
Örs Legeza, Thorsten Rohwedder, Reinhold Schneider +1
We present the Copupled Cluster (CC) method and the Density matrix Renormalization Grooup (DMRG) method in a unified way, from the perspective of recent developments in tensor prod…
Direct minimization for calculating invariant subspaces in density functional computations of the electronic structure
Reinhold Schneider, Thorsten Rohwedder, Alexej Neelov +1
We analyse three related preconditioned steepest descent algorithms, which are partially popular in Hartree-Fock and Kohn-Sham theory as well as invariant subspace computations, fr…
Adaptive Eigenvalue Computation - Complexity Estimates
W. Dahmen, T. Rohwedder, R. Schneider +1
This paper is concerned with the design and analysis of a fully adaptive eigenvalue solver for linear symmetric operators. After transforming the original problem into an equivalen…
Perturbed preconditioned inverse iteration for operator eigenvalue problems with applications to adaptive wavelet discretization
Thorsten Rohwedder, Reinhold Schneider, Andreas Zeiser
In this paper we discuss an abstract iteration scheme for the calculation of the smallest eigenvalue of an elliptic operator eigenvalue problem. A short and geometric proof based o…