Nonlocal General Relativity †

Galaxies

Bahram Mashhoon¹ 

[1] Department of Physics and Astronomy, University of Missouri, Columbia, MO 65211, USA; E-Mail

关键词: nonlocal gravity;    dark matter;   

DOI  :  10.3390/galaxies3010001

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2014 by the author; licensee MDPI, Basel, Switzerland.