| Full text | |
| Author(s): Show less - |
Castro, A.
;
Ydrefors, E.
;
de Paula, W.
;
Frederico, T.
;
de Alvarenga Nogueira, J. H.
;
Maris, P.
;
Guimaraes, V
;
Genezini, F
;
Lubian, J
;
Assuncao, M
;
Delgado, A
;
Trevisan, LA
Total Authors: 12
|
| Document type: | Journal article |
| Source: | WAKE CONFERENCE 2021; v. 1291, p. 6-pg., 2019-01-01. |
| Abstract | |
The challenge to obtain from the Euclidean Bethe-Salpeter amplitude the amplitude in Minkowski is solved by resorting to un-Wick rotating the Euclidean homogeneous integral equation. The results obtained with this new practical method for the amputated Bethe-Salpeter amplitude for a two-boson bound state reveals a rich analytic structure of this amplitude, which can be traced back to the Minkowski space Bethe-Salpeter equation using the Nakanishi integral representation. The method can be extended to small rotation angles bringing the Euclidean solution closer to the Minkowski one and could allow in principle the extraction of the longitudinal parton density functions and momentum distribution amplitude, for example. (AU) | |
| FAPESP's process: | 13/26258-4 - Superdense matter in the universe |
| Grantee: | Manuel Máximo Bastos Malheiro de Oliveira |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/05660-0 - Theoretical studies of the structure and reactions of exotic nuclei and many-body systems |
| Grantee: | Brett Vern Carlson |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 14/19094-8 - Three-body heavy meson decay and CP violation |
| Grantee: | Jorge Henrique de Alvarenga Nogueira |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 16/25143-7 - Relativistic two and three-body problems in Minkowski space in (2+1) and (3+1) dimensions |
| Grantee: | Emanuel Arthur Ydrefors |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/19371-0 - Dyson-Schwinger and Bethe-Salpeter calculations in Euclidean and Minkowski space in QED and QCD |
| Grantee: | Tobias Frederico |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |