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Remarks on Time-Space Noncommutative Field Theories

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arxiv hep-th/0103069 v1 pith:R6CQ2GPD submitted 2001-03-09 hep-th

classification hep-th
keywords noncommutativetheoriesfieldparticlestime-likeargumentsbreakdowncausality
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We propose a physical interpretation of the perturbative breakdown of unitarity in time-like noncommutative field theories in terms of production of tachyonic particles. These particles may be viewed as a remnant of a continuous spectrum of undecoupled closed-string modes. In this way, we give a unified view of the string-theoretical and the field-theoretical no-go arguments against time-like noncommutative theories. We also perform a quantitative study of various locality and causality properties of noncommutative field theories at the quantum level.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. IR Dynamics from UV Divergences: UV/IR Mixing, NCFT, and the Hierarchy Problem

    hep-ph 2019-09 conditional novelty 7.0 of 10

    In noncommutative Yukawa theory, the CPT-required pair of interaction orderings converts the one-loop ultraviolet quadratic divergence into an infrared pole that is reachable in the s-channel.

  2. Entanglement through high-energy scattering in noncommutative quantum electrodynamics

    hep-th 2025-06 conditional novelty 6.0 of 10

    In noncommutative QED, tree-level photon and head-on fermion scattering with opposite helicities give the same concurrence as gluon scattering, maximal at a 90-degree scattering angle, while a right-angle fermion coll...

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