Journal
SCIENCE
Volume 294, Issue 5543, Pages 823-828Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.294.5543.823
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We construct a generalization of the quantum Ha effect, where particles move in four dimensional space under a SU(2) gauge field. This system has a macroscopic number of degenerate single particle states. At appropriate integer or fractional filling fractions the system forms an incompressible quantum liquid. Gapped elementary excitation in the bulk interior and gapless elementary excitations at the boundary are investigated.
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