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Exact critical exponents for quantum spin chains, non-linear σ-models at θ=π and the quantum hall effect

Quantum ScienceQuantum Hall EffectEngineeringPhysicsMany-body Quantum PhysicNatural SciencesSpin SystemsQuantum Field TheoryQuantum MaterialsExact Critical ExponentsQuantum Spin ChainsQuantum Spin IceTopological Quantum StateQuantum MatterCritical Phenomenon