| Автор | C O Nwachuku |
| Дата выпуска | 1977-12-01 |
| dc.description | The spectral functions rho (k<sup>2</sup>) to order e<sup>2</sup> in quantum electrodynamics (QED) for an arbitrary space of dimension 2L are derived and are used to calculate the vacuum expectation value (VEV) of the vector current commutators in a closed form for intermediate fermion states of arbitrary mass. A particularly difficult integral in the VEV including the mass term is evaluated as a Meijer G function. Using these results the problem of equal-time current-current commutators (Schwinger terms) is approached covariantly, thereby resolving some renormalisation ambiguities, and also the well known ambiguities attendant on any naive use of the T product at equal times. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | On dimensional regularisation and current commutators in quantum electrodynamics |
| Тип | paper |
| DOI | 10.1088/0305-4616/3/12/005 |
| Print ISSN | 0305-4616 |
| Журнал | Journal of Physics G: Nuclear Physics |
| Том | 3 |
| Первая страница | 1625 |
| Последняя страница | 1632 |
| Аффилиация | C O Nwachuku; Dept. of Math., Univ. of Benin, Benin City, Nigeria |
| Выпуск | 12 |
