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Dedicated to the memory of M. Hossein Partovi 1941–2014



Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA





Academic Editor: Lorenzo Iorio

Abstract A brief account of the present status of the recent nonlocal generalization of Einstein’s theory of gravitation is presented. The main physical assumptions that underlie this theory are described. We clarify the physical meaning and significance of Weitzenböck’s torsion and emphasize its intimate relationship with the gravitational field, characterized by the Riemannian curvature of spacetime. In this theory, nonlocality can simulate dark matter; in fact, in the Newtonian regime, we recover the phenomenological Tohline–Kuhn approach to modified gravity. To account for the observational data regarding dark matter, nonlocality is associated with a characteristic length scale of order 1 kpc. The confrontation of nonlocal gravity with observation is briefly discussed. View Full-Text

Keywords: nonlocal gravity; dark matter nonlocal gravity; dark matter





Author: Bahram Mashhoon

Source: http://mdpi.com/



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