Time Evolution with the DMRG Algorithm: A Generic Implementation for Strongly Correlated Electronic Systems

Details Time Evolution with the DMRG Algorithm: A Generic Implementation for Strongly Correlated Electronic Systems Time Evolution with the DMRG Algorithm: A Generic Implementation for Strongly Correlated Electronic Systems

2011-03-28

arxiv.org/abs/1103.5391v1

Phys. Rev. E 84 056706 (2011)

Physics

Condensed Matter

Strongly Correlated Electrons

RevTeX4, 9 pages, 5 figures

Scientific paper

10.1103/PhysRevE.84.056706

A detailed description of the time-step-targetting time evolution method within the DMRG algorithm is presented. The focus of this publication is on the implementation of the algorithm, and on its generic application. The case of one-site excitations within a Hubbard model is analyzed as a test for the algorithm, using open chains and two-leg ladder geometries. The accuracy of the procedure in the case of the recently discussed holon-doublon photo excitations of Mott insulators is also analyzed. Performance and parallelization issues are discussed. In addition, the full open-source code is provided as supplementary material.

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