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Article: Research reports on physics from Grand Valley State University provide new insights.
- Article from:
- Physics Week
- Article date:
- May 12, 2009
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"We use the von Neumann entropy to study the single- and many-particle on-site localizations of stationary states for an anisotropic Heisenberg spin-1/2 chain," scientists in the United States report.
"With a constructed bounded sequence of on-site energies for single- and many-particle systems we demonstrate that the von Neumann entropy approaches zero, indicating strong on-site localizations for all states. On the contrary, random on-site energy sequence does not lead to strong on-site confinement of all states," wrote K. Majumdar and colleagues, Grand Valley State University.
The researchers concluded: "Our numerical results indicate that the von ...