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Chiral Virasoro algebra from a single wavefunction
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DOI：10.1016/j.aop.2024.169849.png)
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Abstract
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Chiral edges of 2+1D systems can have very robust emergent conformal symmetry. When the edge is purely chiral, the Hilbert space of low-energy edge excitations can form a representation of a single Virasoro algebra. We propose a method to systematically extract the generators of the Virasoro algebra from a single ground state wavefunction, using entanglement bootstrap and an input from the edge conformal field theory. We corroborate our construction by numerically verifying the commutation relations of the generators. We also study the unitary flows generated by these operators, whose properties (such as energy and state overlap) are shown numerically to agree with our analytical predictions.
Keywords:
Quantum many-body
Virasoro algebra
Chiral gapped phases of matter
Quantum information and entanglement
Edge conformal field theory
Entanglement bootstrap
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