Spacetime thermodynamics and the inflationary universe

Details Spacetime thermodynamics and the inflationary universe Spacetime thermodynamics and the inflationary universe

Feb 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...277..478k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 277, Feb. 15, 1984, p. 478-480. Research supported by the Alfred P. Sloan F

Astronomy and Astrophysics

Astrophysics

Cosmology, Gravitational Constant, Thermodynamics, Universe, Einstein Equations

Scientific paper

Following Sakharov, the authors liken spacetime to an elastic medium with the gravitational constant G playing the role of a temperature-dependent elastic constant. Within this approximation scheme, if G is a decreasing function of temperature, then the flatness and horizon problems are less severe but cannot be solved completely. Hence it appears that some type of inflationary scenario is unavoidable if these fine tuning problems are to be solved without fundamental modifications of the Einstein equations.

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