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  Nonplanar Anomalies in Noncommutative Theories and the Green-Schwarz Mechanism

Armoni, A., Lopez, E., & Theisen, S. (2002). Nonplanar Anomalies in Noncommutative Theories and the Green-Schwarz Mechanism. Journal of High Energy Physics, 2002(6): 050. doi:10.1088/1126-6708/2002/06/050.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-545D-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-545F-B
Genre: Journal Article

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3050.pdf (Preprint), 226KB
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 Creators:
Armoni, Adi, Author
Lopez, Esperanza1, Author
Theisen, Stefan1, Author              
Affiliations:
1Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24014              

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 Abstract: We discuss nonplanar anomalies in noncommutative gauge theories. In particular we show that a nonplanar anomaly exists when the external noncommutative momentum is zero and that it leads to a non-conservation of the associated axial charge. In the case of nonplanar local anomalies, a cancellation of the anomaly can be achieved by a Green-Schwarz mechanism . In an example of D3 branes placed on an orbifold singularity that leads to a chiral theory, the mechanism involves twisted RR fields which propagate with zero noncommutative momentum. Global anomalies are not cancelled and, in particular, the decay pi(0) --> 2gamma is allowed

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Language(s): eng - English
 Dates: 2002
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 3050
DOI: 10.1088/1126-6708/2002/06/050
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Title: Journal of High Energy Physics
Source Genre: Journal
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Pages: - Volume / Issue: 2002 (6) Sequence Number: 050 Start / End Page: - Identifier: ISSN: 1029-8479