Improved constraint on the α1 PPN parameter from lunar motion

authored by
Jürgen Müller, Kenneth Nordtvedt, David Vokrouhlický
Abstract

Some theories of gravity, alternative to general relativity, introduce a preferred rest frame for local gravitational physics. At the post-Newtonian level, these preferred-frame effects in Lagrangian-based theories are described by two phenomenological parameters α1 and α2, of which only the latter is strongly constrained today. Following previous theoretical suggestions of Nordtvedt, Damour, and Vokrouhlický, we show that the analysis of the lunar motion provides an improved bound of the former parameter, notably α1 =(-8±9)×10-5 realistic error [and α1 =(-8±4)×10-5(90% C.L.)].

External Organisation(s)
Northwest Analysis
Charles University
Technical University of Munich (TUM)
Type
Article
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
54
Pages
R5927-R5930
ISSN
1550-7998
Publication date
15.11.1996
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous)
Electronic version(s)
https://doi.org/10.1103/PhysRevD.54.R5927 (Access: Unknown)
 

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