Lattice and Continuum Theories

Details Lattice and Continuum Theories Lattice and Continuum Theories

1994-04-19

arxiv.org/abs/hep-lat/9404009v1

Physics

High Energy Physics

High Energy Physics - Lattice

(Latex, 6 pages), preprint CEBAF-TH-94-11

Scientific paper

We investigate path integral formalism for continuum theory. It is shown that the path integral for the soft modes can be represented in the form of a lattice theory. Kinetic term of this lattice theory has a standard form and potential term has additional nonlocal terms which contributions should tend to zero in the limit of continuum theory. Contributions of these terms can be estimated. It is noted that this representation of path integral may be useful to improve lattice calculations taking into account hard modes contribution by standard perturbative expansion. We discuss translation invariance of correlators and the possibility to construct a lattice theory which keeps rotary invariance also.

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