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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Foffa, Stefano [1, 2] ; Sturani, Riccardo [3]
Total Authors: 2
[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva - Switzerland
[2] Univ Geneva, Ctr Astroparticle Phys, CH-1211 Geneva - Switzerland
[3] Univ Fed Rio Grande do Norte, Int Inst Phys, Campus Univ, BR-59078970 Natal, RN - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Physical Review D; v. 100, n. 2 JUL 24 2019.
Web of Science Citations: 6

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)

FAPESP's process: 12/14132-3 - Analysis of gravitational waves
Grantee:Riccardo Sturani
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants