Journal article 1025 views
Nonplanar Anomalies in Noncommutative Theories and the Green-Schwarz Mechanism
Journal of High Energy Physics, Volume: "06", Issue: 06, Pages: 050 - 050
Swansea University Author:
Adi Armoni
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DOI (Published version): 10.1088/1126-6708/2002/06/050
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...
| Published in: | Journal of High Energy Physics |
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| ISSN: | 1029-8479 |
| Published: |
2002
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa28676 |
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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 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 pi0 --> 2 gamma is |
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| College: |
Faculty of Science and Engineering |
| Issue: |
06 |
| Start Page: |
050 |
| End Page: |
050 |