On the vacuum theta angle in Yang-Mills field theories

Details On the vacuum theta angle in Yang-Mills field theories On the vacuum theta angle in Yang-Mills field theories

1994-05-30

arxiv.org/abs/hep-ph/9405408v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

May/1994/ISU

Scientific paper

Recently, MIT group found a numerical solution to non-abelian gauge fields which is shown to contain non-integer topological number. Using this fact, V.V.Khoze has argued that the vacuum theta angle is zero. Here, we study this in a complimentary way--its physical respect. The key point is MIT solution has an infinite action. Using this, we prove the vacuum theta angle is zero at semiclassical level.

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