Abstract
I discuss the connection between the Hamiltonian and path integral approaches for fermionic fields. I show how the temporal Wilson projection operators appear naturally in a lattice action. I also carefully treat the insertion of a chemical potential term.
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Creutz, M. Transfer Matrices and Lattice Fermions at Finite Density. Foundations of Physics 30, 487–492 (2000). https://doi.org/10.1023/A:1003630124933
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DOI: https://doi.org/10.1023/A:1003630124933