Abstract
We describe a systematic approach for the evaluation of Witten diagrams for multi-loop scattering amplitudes of a conformally coupled scalar phi(4)-theory in Euclidean AdS(4), by recasting the Witten diagrams as flat space Feynman integrals. We derive closed form expressions for the anomalous dimensions for all double-trace operators up to the second order in the coupling constant. We explain the relation between the flat space unitarity methods and the discontinuities of the short distance expansion on the boundary of Witten diagrams.
| Item Type: | Journal article |
|---|---|
| Faculties: | Physics |
| Subjects: | 500 Science > 530 Physics |
| URN: | urn:nbn:de:bvb:19-epub-106888-6 |
| ISSN: | 1029-8479 |
| Language: | English |
| Item ID: | 106888 |
| Date Deposited: | 11. Sep 2023, 13:44 |
| Last Modified: | 29. Sep 2023, 20:43 |
| DFG: | Gefördert durch die Deutsche Forschungsgemeinschaft (DFG) - 491502892 |
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