Split-Quaternionic Hopf Map, Quantum Hall Effect, and Twistor Theory

Details Split-Quaternionic Hopf Map, Quantum Hall Effect, and Twistor Theory Split-Quaternionic Hopf Map, Quantum Hall Effect, and Twistor Theory

2009-02-15

arxiv.org/abs/0902.2523v3

Phys.Rev.D81:041702,2010

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, 1 table, no figures, references added, published version

Scientific paper

10.1103/PhysRevD.81.041702

Introducing a non-compact version of the Hopf map, we demonstrate remarkable close relations between quantum Hall effect and twistor theory. We first construct quantum Hall effect on a hyperboloid based on the noncompact 2nd Hopf map of split-quaternions. We analyze a hyperbolic one-particle mechanics, and explore many-body problem, where a many-body groundstate wavefunction and membrane-like excitations are derived explicitly. In the lowest Landau level, the symmetry is enhanced from $SO(3, 2)$ to the $SU(2, 2)$ conformal symmetry. We point out that the quantum Hall effect naturally realizes the philosophy of twistor theory. In particular, the emergence mechanism of fuzzy space-time is discussed somehow in detail.

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