Conservative dynamics of binary systems to fourth post-Newtonian order in the EFT approach. I. Regularized Lagrangian

Autor(es)

Foffa, Stefano ; Sturani, Riccardo

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW D; v. 100, n. 2, p. 16-pg., 2019-07-24.

Resumo

Within the framework of the effective field theory approach to the post-Newtonian approximation to general relativity, we report the so-far missing G(3) and G(4) sectors of the conservative two-body dynamics at fourth perturbative order for nonspinning compact objects. Following the standard procedure, the gravitational interaction is integrated out to obtain a systematic expansion in terms of Feynman graphs. Building on this result and on previously obtained ones, we are able to write the local-in-time regularized Lagrangian at fourth post-Newtonian order, which is in agreement with results previously computed with other 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