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Green-Schwarz Anomaly Cancellation, World Sheet Instantons and Wormholes | | H. B. Nielsen
; Y. Takanishi
; | | Date: |
13 Oct 2003 | | Subject: | hep-ph gr-qc hep-th | | Abstract: | We consider the breaking of the global conservation of gauge field charges which are commonly thought to survive the spontaneous breakdown of gauge symmetry brought about by Kalb-Ramond fields. Depending on the dilaton field and also the size of the compactifying space, the global charge breaking may take place due to world sheet instantons. In going to 3+1 dimensions one could have a serious problem in order to produce the hierarchies between the quark and the charged lepton masses using the mass protecting charges with the Green-Schwartz anomaly cancellation. Various unnatural features of this type of models are discussed. | | Source: | arXiv, hep-ph/0310146 | | Services: | Forum | Review | PDF | Favorites | |
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