Remarks on time space noncommutative field theories
Mar, 200119 pages
Published in:
- JHEP 05 (2001) 057
e-Print:
- hep-th/0103069 [hep-th]
Report number:
- CERN-TH-2001-052,
- ZH-TH-06-01
Citations per year
Abstract:
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.- phi**n model
- any-dimensional
- differential geometry: noncommutative
- unitarity: symmetry breaking
- perturbation theory: higher-order
- string model
- tachyon: production
- causality
- bibliography
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