Fifth force, dark matter, and fourth-order gravity.

Details Fifth force, dark matter, and fourth-order gravity. Fifth force, dark matter, and fourth-order gravity.

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990el.....12..667s&link_type=abstract

Europhys. Lett., Vol. 12, No. 7, p. 667 - 670

Astronomy and Astrophysics

Astronomy

3

Cosmology: Dark Matter

Scientific paper

There exist two different dark-matter problems in cosmology: a) the discrepancy between the dynamical and luminous mass of astronomical systems and b) the discrepancy between the observed mean mass density of the universe and the critical one predicted by inflation. It is shown that a "fifth force" ((Newtonian + Yukawa)-type potential) coming from fourth-order gravity can explain the discrepancy b) but not a). Finally, a higher-order gravity theory (many Yukawa terms in the potential) is discussed.

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