We introduce an approach for calculating the quantum loop corrections in the φ4 theory. Differential regularization and background-field method are essential tools and are used to calculate the effective action of the theory to two-loop order. Our approach is considerably simpler than other known methods and can be readily extended to higher-loop calculations and to other models.
|Number of pages||7|
|Journal||Chinese Journal of Physics|
|Publication status||Published - 1996 Aug|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)