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Friedmann, A. (1924) Zeitschrift für Physik, 21, 326-332. Friedmann, A. (1999) General Relativity and Gravitation, 31, 2001-2008. http://dx.doi.org/10.1023/A:1026755309811

has been cited by the following article:

• TITLE: Dark Energy

  AUTHORS: Ranku Kalita

  KEYWORDS: Cosmology, Dark Energy, Dark Matter

  JOURNAL NAME: Journal of Modern Physics, Vol.6 No.7, June 30, 2015

  ABSTRACT: It is proposed that the principle of equivalence—which recognizes momentary equivalence between gravitational and inertial force—is cosmologicalized in an expanding spherical distribution of matter, whereby spacetime itself acts as the accelerating frame of reference of the inertial mass of an object on the surface of the sphere, and the inertial force thus generated is momentarily equivalent at a certain radial distance to the gravitational force experienced by the gravitational mass of the object. The spacetime accelerating frame of reference is parametrized by the cosmological constant Λ. The relation between inertial mass of an object and the cosmological constant can be generalized as a correlation between the matter density in the universe and the cosmological constant. Since matter density dilutes in an expanding universe, it is predicted that the Λ-term should be time varying.