Year: 2006
Type: article
Abstract: Systems of Y-junctions are interesting both from a fundamental viewpoint and because of their potential use in nanoscale devices. These systems can be studied numerically with the density matrix renormalization group (DMRG), but existing algorithms are inefficient. Here, we introduce a much more efficient DMRG algorithm for Y-junction systems. As an example of the use of this method, we study $S=\frac{1}{2}$ bound states in Heisenberg $S=1$ junctions with two geometries, one where the junction consists of a single site, and the other where it consists of a triangle of three sites.
Source: Physical Review B
Authors: Haihui Guo, Steven R. White
Institution: University of California, Irvine
Language: English
Topic: Quantum many-body systems
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2159680387