| Автор | Dan Israël |
| Автор | Vasilis Niarchos |
| Дата выпуска | 2007-07-01 |
| dc.description | Is perturbative stability intimately tied with the existence of spacetime fermions in string theory in more than two dimensions? Type 0′B string theory in ten-dimensional flat space is a rare example of a non-tachyonic, non-supersymmetric string theory with a purely bosonic closed string spectrum. However, all known type 0′ constructions exhibit massless NSNS tadpoles signaling the fact that we are not expanding around a true vacuum of the theory. In this note, we are searching for perturbatively stable examples of type 0′ string theory without massless tadpoles in backgrounds with a spatially varying dilaton. We present two examples with this property in non-critical string theories that exhibit four- and six-dimensional Poincaré invariance. We discuss the D-branes that can be embedded in this context and the type of gauge theories that can be constructed in this manner. We also comment on the embedding of these non-critical models in critical string theories and their holographic (Little String Theory) interpretation and propose a general conjecture for the role of asymptotic supersymmetry in perturbative string theory. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Tree-level stability without spacetime fermions: novel examples in string theory |
| Тип | paper |
| DOI | 10.1088/1126-6708/2007/07/065 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2007 |
| Первая страница | 65 |
| Последняя страница | 065 |
| Выпуск | 07 |
