Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-09-19
Phys.Lett. B345 (1995) 507-512
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, UTTG-13-94. Several typos corrected, some explanations expanded and an incorrect estimate corrected. No change in th
Scientific paper
10.1016/0370-2693(94)01650-2
We show that heavy fermions decouple from the low energy physics also in non-perturbative instanton effects. Provided the heavy fermions are lighter than the symmetry breaking scale, all the instanton effects should be expressed as local operators in the effective Lagrangian. The effective theory itself doesn't admit instantons. We present the mechanism which suppresses instantons in the effective theory.
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