|
|||||
|
|
Summing the derivative expansion of the effective action |
|
| Authors: | Eduard Mass Francesc Rota |
| Institution: | Grup de Física Teòrica and Institut de Física d'Altes Energies, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain |
| Abstract: | The derivative expansion of the effective action is a perturbative development in derivatives of the fields. The expansion breaks down when some of the derivatives are too large. We show how to sum exactly the first and second derivatives and treat perturbatively derivatives higher than second. |
| Keywords: | PACS classification codes: 12 38 Cy |
| 本文献已被 ScienceDirect 等数据库收录！ | |