Anomaly Cancellations and Open-String Theories
| dc.creator | Sagnotti, Augusto | |
| dc.date | 1993-02-22 | |
| dc.date.accessioned | 2026-07-07T04:19:17Z | |
| dc.date.available | 2026-07-07T04:19:17Z | |
| dc.description | In models of oriented closed strings, anomaly cancellations are deeply linked to the {\it modular invariance} of the torus amplitude. If open and/or unoriented strings are allowed, there are no non-trivial modular transformations in the additional genus-one amplitudes (Klein bottle, annulus and Möbius strip). As originally recognized by Green and Schwarz, in the ten-dimensional type-I superstring the anomaly cancellation results from a delicate interplay between the contributions of these additional surfaces. In lower-dimensional models, the possible presence of a number of antisymmetric tensors yields a generalization of the Green-Schwarz mechanism. I illustrate these results by referring to some six-dimensional chiral models, and I conclude by addressing the additional difficulties that one meets when trying to extend the construction to chiral four-dimensional models. (Contribution to ''From Superstrings to Supergravity'', Erice, ITALY, december 5-12, 1992) | |
| dc.description | plain TEX | |
| dc.identifier | https://arxiv.org/abs/hep-th/9302099 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9302099 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/53490 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Anomaly Cancellations and Open-String Theories | |
| dc.type | text |