Journal Article

PUBDB-2024-01994

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Multipole expansion at the level of the action in d-dimensions

Amalberti, L. (Corresponding author)Extern*DESY* ; Larrouturou, F.DESY* ; Yang, Z.DESY*

2024
American Physical Society Ridge, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevD.109.104027  doi:10.3204/PUBDB-2024-01994

Report No.: DESY-23-200; arXiv:2312.02868

Abstract: In this paper we study the multipole expansion of the long-wavelength effective action for radiative sources in (d+1) spacetime dimensions. We present detailed expressions for the multipole moments for the case of scalar-, electromagnetic-, and (linearized) gravitational-wave emission. For electromagnetism and gravity, we derive expressions for the odd-parity, magnetic-type moments as SO(d) duals of the ones traditionally used in the literature. The d-dimensional case features a novel set of “Weyl-type” moments, coupling to the spatial part of the Weyl tensor, which are absent in three dimensions. Agreement is found in the overlap with previous known results, notably in the d→3 limit. Because of its reliance on dimensional regularization, the results presented here play a crucial role for the further development of the effective field theory approach to gravitational dynamics, and in particular for the computation of the gravitational-wave flux, starting at the third post-Newtonian order.

Keyword(s): expansion: multipole ; tensor: Weyl ; space-time: dimension ; dimension: 3 ; regularization: dimensional ; gravitational radiation: flux ; gravitational radiation: emission ; gravitation ; effective field theory ; duality ; overlap ; effective action ; any-dimensional ; moment: multipole ; radiation: electromagnetic ; radiation: scalar ; approximation: linear ; parity ; magnetic moment ; SO(N) ; asymptotic behavior

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Contributing Institute(s):

1. Theoretische Astroteilchenphysik (Z_THAT)

Research Program(s):

1. 613 - Matter and Radiation from the Universe (POF4-613) (POF4-613)
2. LHCtoLISA - Precision Gravity: From the LHC to LISA (817791) (817791)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Amalberti, L. (Corresponding author)Extern*DESY* ; Larrouturou, F.DESY* ; Yang, Z.DESY*
Multipole expansion at the level of the action in d-dimensions
[10.3204/PUBDB-2023-07357]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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