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Theoretical frameworks for testing relativistic gravity. IV - A compendium of metric theories of gravity and their post-Newtonian limits.Metric theories of gravity are compiled and classified according to the types of gravitational fields they contain, and the modes of interaction among those fields. The gravitation theories considered are classified as (1) general relativity, (2) scalar-tensor theories, (3) conformally flat theories, and (4) stratified theories with conformally flat space slices. The post-Newtonian limit of each theory is constructed and its Parametrized Post-Newtonian (PPN) values are obtained by comparing it with Will's version of the formalism. Results obtained here, when combined with experimental data and with recent work by Nordtvedt and Will and by Ni, show that, of all theories thus far examined by our group, the only currently viable ones are general relativity, the Bergmann-Wagoner scalar-tensor theory and its special cases (Nordtvedt; Brans-Dicke-Jordan), and a recent, new vector-tensor theory by Nordtvedt, Hellings, and Will.
Document ID
19720058901
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Ni, W.-T. (California Institute of Technology Pasadena, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
September 15, 1972
Publication Information
Publication: Astrophysical Journal
Volume: 176
Subject Category
PHYSICS, GENERAL
Funding Number(s)
CONTRACT_GRANT: NSF GP-28027
CONTRACT_GRANT: NSF GP-27304
CONTRACT_GRANT: NGR-05-002-256
Distribution Limits
Public
Copyright
Other