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Quantum Corrections and Exact Results in Supersymmetric Theories Regularized by Higher Covariant Derivativesстатья
- Автор: Stepanyantz K.V.
- Журнал: Moscow University Physics Bulletin
- Том: 79
- Номер: Suppl. 1
- Год издания: 2024
- Издательство: Allerton Press
- Местоположение издательства: New York, N.Y., United States
- Первая страница: S486
- Последняя страница: S494
- DOI: 10.3103/S0027134924701364
- Аннотация: Some properties of quantum corrections in various supersymmetric theories revealed with the help of the higher covariant derivative regularization are briefly reviewed. In particular, we discuss how the exact NSVZ β-function appears, and why it is valid in all orders of the perturbation theory inthe HD+MSL renormalization prescription. It is demonstrated that this fact can be used for essential simplifying some multiloop calculations. In particular, we present the expression for the three-loop β-function of an arbitrary N = 1 supersymmetric gauge theory with a simple gauge group. For N = 2 supersymmetric theories written in terms of N = 1 superfields we formulate the conditions imposed on a subtraction scheme which are needed for the finiteness beyond the one-loop approximation. In particular, the renormalization prescription should be N = 2 supersymmetric, so that the ratio of Yukawa and gauge couplings should not depend on the renormalization point μ. A possibility of achieving a similar conditionfor N = 1 supersymmetric theories satisfying the so-called P = 1/3 Q condition and its consequences are discussed.
- Добавил в систему: Степаньянц Константин Викторович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2024_79_S486.pdf | 725,0 КБ | 24 февраля 2025 [Stepanyantz] |