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On Decoupling of Massless Modes in NCOS Theories

Seungjoon Hyun, Sangmin Lee, Hyeonjoon Shin

hep-tharXiv:hep-th/0204055

Abstract

We revisit the decoupling phenomenon of massless modes in the noncommutative open string (NCOS) theories. We check the decoupling by explicit computation in (2+1) or higher dimensional NCOS theories and recapitulate the validity of the decoupling to all orders in perturbation theory.

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