| Автор | Björn Andreas |
| Автор | Gottfried Curio |
| Автор | Ruben Minasian |
| Дата выпуска | 2000-09-01 |
| dc.description | Tadpole cancellation in F-theory on an elliptic Calabi-Yau fourfold X→B<sub>3</sub> demands some spacetime-filling three-branes (points in B<sub>3</sub>). If moved to the discriminant surface, which supports the gauge group, and dissolved into a finite size instanton, the second Chern class of the corresponding bundle E is expected to give a compensating contribution. However the dependence of D-brane charge on the geometry of W and on the embedding i:W→B<sub>3</sub> gives a correction to c<sub>2</sub>(E). We show how this is reconciled by considering the torsion sheaf i<sub>*</sub>E and discuss some integrality issues related to global properties of X as well as the moduli space of this object. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Anomalous D-brane charge in F-theory compactifications |
| Тип | paper |
| DOI | 10.1088/1126-6708/2000/09/022 |
| Electronic ISSN | 1029- 8479 |
| Print ISSN | 1126-6708 |
| Журнал | Journal of High Energy Physics |
| Том | 2000 |
| Первая страница | 22 |
| Последняя страница | 022 |
| Выпуск | 09 |
