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Collective excitations at the boundary of a 4D quantum Hall droplet
Jiangping Hu, Shou-Cheng Zhang
In this work we investigate collective excitations at the boundary of a recently constructed 4D quantum Hall state. Local bosonic operators for creating these collective excitation…
A Four Dimensional Generalization of the Quantum Hall Effect
Shou-Cheng Zhang, Jiangping Hu
We construct a generalization of the quantum Hall effect, where particles move in four dimensional space under a SU(2) gauge field. This system has a macroscopic number of degenera…
Theory of Static and Dynamic Antiferromagnetic Vortices in LSCO Superconductors
Jiang-Ping Hu, Shou-Cheng Zhang
A key prediction of the SO(5) theory is the antiferromagnetic vortex state. Recent neutron scattering experiment on LSCO superconductors revealed enhanced antiferromagnetic order i…
Dispersoin of the πresonance
Jiangping Hu, Shou-Cheng Zhang
We study the dispersion of the resonance in the superconducting state within the projected SO(5) model\cite{project}. Away from the the commensurate momentum, the propagation o…