Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap.....37..288a&link_type=abstract
Astrophysics, Volume 37, Issue 3, pp.288-296
Astronomy and Astrophysics
Astrophysics
Scientific paper
We state the time-dependent problem in the Jordan-Brans-Dicke tensor-scalar theory of gravitation. We show that in the conformally corresponding space the equations of the problem have the same form as the Einstein equations with an extra source in the form of the components of the “energy-momentum tensor” of the scalar field. We discuss the question whether Birkhoff's theorem can hold in the Jordan-Brans-Dicke theory. We simultaneously obtain a formula that expresses the mass of an isolated static object as a function of the distribution of pressure of matter. We also discuss the integrability of the vacuum time-dependent equations of the Einstein theory.
Arutyunyan G. G.
Papoyan Vl. V.
Pervushin Victor N.
Sheftel' M. B.
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