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Chiral fermion in the Hamiltonian lattice gauge theory

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arxiv 2305.18934 v2 pith:BZMP47BG submitted 2023-05-30 hep-lat quant-ph

classification hep-latquant-ph
keywords chiralfermionhamiltonianchargedefinedgaugelatticetheory
verification ladder T0 review T1 audit T2 compute T3 formal
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We discuss the chiral fermion in the Hamiltonian formalism of lattice gauge theory. Although the naive chiral charge operator does not commute with the Hamiltonian, the commutable one can be defined for the overlap fermion. The eigenvalues of the energy and the chiral charge can be defined simultaneously. We study how the eigenvalue spectrum reflects chiral properties of systems, such as a chiral chemical potential and the axial anomaly. We also show that the Wilson fermion is a chiral fermion in one dimension.

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