| Texto completo | |
| Autor(es): |
Foffa, Stefano
;
Mastrolia, Pierpaolo
;
Sturani, Riccardo
;
Sturm, Christian
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PHYSICAL REVIEW D; v. 95, n. 10, p. 13-pg., 2017-05-08. |
| Resumo | |
Working within the post-Newtonian (PN) approximation to general relativity, we use the effective field theory (EFT) framework to study the conservative dynamics of the two-body motion at fourth PN order, at fifth order in the Newton constant. This is one of the missing pieces preventing the computation of the full Lagrangian at fourth PN order using EFT methods. We exploit the analogy between diagrams in the EFT gravitational theory and two-point functions in massless gauge theory, to address the calculation of four-loop amplitudes by means of standard multiloop diagrammatic techniques. For those terms which can be directly compared, our result confirms the findings of previous studies, performed using different methods. (AU) | |
| Processo FAPESP: | 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica |
| Beneficiário: | Nathan Jacob Berkovits |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 12/14132-3 - Análise das ondas gravitacionais |
| Beneficiário: | Riccardo Sturani |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |