The Jain-2/5 parent Hamiltonian: structure of zero modes, dominance patterns, and zero mode generators

Abstract

We analyze general zero mode properties of the parent Hamiltonian of the unprojected Jain-2/5 state. We characterize the zero mode condition associated to this Hamiltonian via projection onto a four-dimensional two-particle subspace for given pair angular momentum, for the disk and similarly for the spherical geometry. Earlier numerical claims in the literature about ground state uniqueness on the sphere are substantiated on analytic grounds, and related results are derived. Preference is given to second quantized methods, where zero mode properties are derived not from given analytic wave functions, but from a "lattice" Hamiltonian and associated zero mode conditions. This method reveals new insights into the guiding-center structure of the unprojected Jain-2/5 state, in particular a system of dominance patterns following a "generalized Pauli principle", which establishes a complete one-to-one correspondence with the edge mode counting. We also identify one-body operators that function as generators of zero modes.

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• Search for exact local Hamiltonians for general fractional quantum Hall states
• Composite fermions in Fock space: Operator algebra, recursion relations, and order parameters
• Adiabatic Construction of Hierarchical Quantum Hall States
• Possible restoration of particle-hole symmetry in the 5/2 Quantized Hall State at small magnetic field
• Mechanism for particle fractionalization and universal edge physics in quantum Hall fluids
• From frustration-free parent Hamiltonians to off-diagonal long-range order: Moore-Read and related states in second quantization
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• Construction of a series of new $\nu =2/5$ fractional quantum Hall wave functions by conformal field theory
• Exactly Solvable Hamiltonian for Non-Abelian Quasiparticles
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