$SO(5)$ Landau Model and 4D Quantum Hall Effect in The $SO(4)$ Monopole Background

Abstract

We investigate the $SO(5)$ Landau problem in the $SO(4)$ monopole gauge field background by applying the techniques of the non-linear realization of quantum field theory. The $SO(4)$ monopole carries two topological invariants, the second Chern number and a generalized Euler number, specified by the $SU(2)$ monopole and anti-monopole indices, $I_{+}$ and $I_{-}$. The energy levels of the $SO(5)$ Landau problem are grouped into $\text{Min}(I_{+},I_{-})+1$ sectors, each of which holds Landau levels. In the $n$-sector, $N$th Landau level eigenstates constitute the $SO(5)$ irreducible representation with $(p,q{)}_5=(N+I_{+}+I_{-}-n,N+n{)}_5$ whose function form is obtained from the $SO(5)$ non-linear realization matrix. In the $n=0$ sector, the emergent quantum geometry of the lowest Landau level is identified as the fuzzy four-sphere with radius being proportional to the difference between $I_{+}$ and $I_{-}$. The Laughlin-like wavefunction is constructed by imposing the $SO(5)$ lowest Landau level projection to the many-body wavefunction made of the Slater determinant. We also analyze the relativistic version of the $SO(5)$ Landau model to demonstrate the Atiyah-Singer index theorem in the $SO(4)$ gauge field configuration.

1+32 pages, 7 figures; minor corrections

References in corpus (9)

• Quantum Spin Hall Effect and Topologically Invariant Chern Numbers
• Photonic topological pumping through the edges of a dynamical four-dimensional quantum Hall system
• Exploring 4D Quantum Hall Physics with a 2D Topological Charge Pump
• Quantum Hall Effect in Higher Dimensions, Matrix Models and Fuzzy Geometry
• Higher Dimensional Quantum Hall Effect as A-Class Topological Insulator
• Topological Insulators and Superconductors from String Theory
• Hyperbolic Supersymmetric Quantum Hall Effect
• Quantum Hall Effect on Odd Spheres
• Quantum Hall Effect on the Grassmannians ${\mathbf{Gr}}_2({\mathbb{C}}^N)$

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