On the Schroedinger functional in QCD

Details On the Schroedinger functional in QCD On the Schroedinger functional in QCD

1993-12-20

arxiv.org/abs/hep-lat/9312079v1

Nucl.Phys. B421 (1994) 135-158

Physics

High Energy Physics

High Energy Physics - Lattice

22 pages in postscript (no figures)

Scientific paper

10.1016/0550-3213(94)90228-3

In a series of publications [\ref{LNWW},\ref{Schroedinger}], L\"uscher et al. have demonstrated the usefulness of the Schr\"odinger functional in pure SU(2) and SU(3) gauge theory. In this paper, it is shown how their formalism can be extended to include fermions. In the framework of Wilson's lattice QCD, we define the Schr\"odinger functional by making use of the transfer matrix formalism. Boundary conditions for the fermions arise naturally. We then take the naive continuum limit of the action and show that no lattice peculiarities are left over. The corresponding free Dirac operator has a unique self-adjoint extension with purely discrete spectrum and no zero modes.

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