Currents, chemical potential and boundary conditions in lattice QCD
classification
✦ hep-lat
keywords
currentsboundarychemicalconditionsconnectionfermionicpotentialaction
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A connection between the operator fermionic currents $\hatJ$ and corresponding `Grassmannian' currents $J$ in the functional integral formalism is studied. The QCD action with non--zero chemical potential $\mu$ is derived. A connection between the fermionic Fock space and boundary conditions along the forth direction is discussed.
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