Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2003-01-10
J. Phys. Soc. Japan 72 Suppl. A 145 (2003)
Physics
Condensed Matter
Disordered Systems and Neural Networks
accepted in Proceedings of Localisation 2002 Conference, Tokyo, Japan (to be published as supplement of J. Phys. Soc. Japan)
Scientific paper
We report a numerical investigation of localization in the SU(2) model
without diagonal disorder. At the band center, chiral symmetry plays an
important role. Our results indicate that states at the band center are
critical. States away from the band center but not too close to the edge of the
spectrum are metallic as expected for Hamiltonians with symplectic symmetry.
Asada Yoichi
Ohtsuki Tomi
Slevin Keith
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