Issues

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2014

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April

  

100th anniversary of the birth of Ya.B. Zeldovich


Ya.B. Zeldovich’s ideas and modern Brans—Dicke cosmology

 a, b,  a,  c,  c
a Astro Space Centre, Lebedev Physical Institute, Russian Academy of Sciences, ul. Profsoyuznaya 84/32, Moscow, 117997, Russian Federation
b Niels Bohr International Academy, Niels Bohr Institute, Blegdamsvej 17, Copenhagen, DK-2100, Denmark
c Lomonosov Moscow State University, Shternberg State Astronomical Institute, Universitetskii prosp. 13, Moscow, 119889, Russian Federation

We compare Ya.B. Zeldovich’s ideas about Brans—Dicke theory and Mach’s principles, contained in now-classical books, with modern results in this field. Our recent results on the Brans—Dicke cosmology with cosmological term are presented. The Friedmann—Brans—Dicke equations are written for a flat Universe. The initial conditions for the model are provided by the presently observed Hubble constant, its first time derivative (the deceleration parameter), and matter density. The cosmological scenario with the scale factor not vanishing in the past, corresponding to the absence of the cosmological singularity, is analytically calculated. Instead of the singularity, the scale factor experiences a “bounce” and demonstrates the regular behavior at all times. Some ideas related to Mach’s principle are also discussed.

Text can be downloaded in Russian. English translation is available here.
PACS: 04.60.Bc, 04.60.Pp, 98.80.Cq, 98.80.Qc (all)
DOI: 10.3367/UFNe.0184.201404c.0379
URL: https://ufn.ru/en/articles/2014/4/d/
Citation: Novikov I D, Shatskiy A A, Alexeyev S O, Tretyakova D A "Ya.B. Zeldovich's ideas and modern Brans—Dicke cosmology" Phys. Usp. 57 352–358 (2014)
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Received: 4th, September 2013, revised: 8th, October 2013, 14th, October 2013

:   ,   ,   ,    « ..   —» 184 379–386 (2014); DOI: 10.3367/UFNr.0184.201404c.0379

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