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Stretched Strings in Noncommutative Field Theory

Hong Liu·Jeremy Michelson
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Abstract

Motivated by recent discussions of IR/UV mixing in noncommutative field theories, we perform a detailed analysis of the non-planar amplitudes of the bosonic open string in the presence of an external B-field at the one-loop level. We carefully isolate, at the string theory level, the contribution which is responsible for the IR/UV behavior in the field theory limit. We show that it is a pure open string effect by deriving it from the factorization of the one-loop amplitude into the disk amplitudes of intermediate open string insertions. We suggest that it is natural to understand IR/UV mixing as the creation of intermediate ``stretched strings''.

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Hong Liu, Jeremy Michelson. 2000-05-02. Stretched Strings in Noncommutative Field Theory. https://doi.org/10.1103/physrevd.62.066003

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