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Session M16 - Localization and Transitions Between QHE Plateaus.
MIXED session, Thursday morning, March 21
Room 225, America's Center
The Chalker--Coddington network model
of the integer quantum Hall effect can be mapped to an SU(2N)
antiferromagnetic quantum spin chain in the self-conjugate
representation, where the plateau
transition is identified with the dimerization transition of
the spin chain in the N\rightarrow0 limit.(D-H Lee,
Phys. Rev. B 50), 10788 (1994).
Following a recently introduced space-time approach to quantum spin
chains,(M. Aizenman and B.
Nachtergaele, Commun. Math. Phys. 164), 17 (1994).
we propose a conformally invariant bosonic action for the
SU(2N) spin chain in the fundamental
representation, for 0