Time-Dependent Density-Matrix Renormalization Group: A Systematic Method for the Study of Quantum Many-Body Out-of-Equilibrium Systems
2002; American Physical Society; Volume: 88; Issue: 25 Linguagem: Inglês
10.1103/physrevlett.88.256403
ISSN1092-0145
AutoresMiguel A. Cazalilla, J. B. Marston,
Tópico(s)Quantum many-body systems
ResumoThe density-matrix renormalization-group (DMRG) algorithm is extended to treat time-dependent problems. The method provides a systematic and robust tool to explore out-of-equilibrium phenomena in quantum many-body systems. We illustrate the method by showing that attractive interactions enhance the tunneling current between two Luttinger liquids, whereas repulsive interactions suppress it, in qualitative agreement with analytical predictions. Enhancement of the transport current through a quantum dot in the Kondo regime is also exhibited.
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