Currents, chemical potential and boundary conditions in lattice QCD

Abstract

A connection between the operator fermionic currents $\text{hatJ}$ 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.

Comments: Lattice2002 (spectrum)