The lattice Schrödinger functional and the background field effective action

  title={The lattice Schr{\"o}dinger functional and the background field effective action},
  author={Paolo Cea and Leonardo Cosmai and Antonio Davide Polosa},
  journal={Physics Letters B},
Abstract We propose a new method that by using the lattice Schrodinger functional allows to investigate the effective action for external background fields in lattice gauge theories. We show that this method gives sensible results for the case of four-dimensional U(1) gauge theory in an external constant magnetic field. 

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  • Phys. B384
  • 1992