Chowdhury, D and Haldar, P and Zahed, A (2022) Locality and analyticity of the crossing symmetric dispersion relation. In: Journal of High Energy Physics, 2022 (10).
|
PDF
jou_hig_ene_phy_ 2022-10_2022.pdf - Published Version Download (4MB) | Preview |
Abstract
This paper discusses the locality and analyticity of the crossing symmetric dispersion relation (CSDR). Imposing locality constraints on the CSDR gives rise to a local and fully crossing symmetric expansion of scattering amplitudes, dubbed as Feynman block expansion. A general formula is provided for the contact terms that emerge from the expansion. The analyticity domain of the expansion is also derived analogously to the Lehmann-Martin ellipse. Our observation of type-II super-string tree amplitude suggests that the Feynman block expansion has a bigger analyticity domain and better convergence. © 2022, The Author(s).
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of High Energy Physics |
| Publisher: | Springer Science and Business Media Deutschland GmbH |
| Additional Information: | The copyright for this article belongs to Springer Science and Business Media Deutschland GmbH |
| Keywords: | Field Theories in Higher Dimensions; Scattering Amplitudes |
| Department/Centre: | Division of Physical & Mathematical Sciences > Centre for High Energy Physics |
| Date Deposited: | 29 Nov 2022 09:05 |
| Last Modified: | 29 Nov 2022 09:05 |
| URI: | https://eprints.iisc.ac.in/id/eprint/77893 |
Actions (login required)
 |
View Item |
