Open AccessNonlocal modified gravity and its cosmological solutions
Author(s) -
Бранко Драгович
Publication year - 2014
Publication title -
facta universitatis. series: physics, chemistry and technology
Language(s) - English
Resource type - Journals
eISSN - 2406-0879
pISSN - 0354-4656
DOI - 10.2298/fupct1402139d
Subject(s) - general relativity , quantum nonlocality , physics , theoretical physics , cosmic cancer database , gravitation , scale factor (cosmology) , invertible matrix , massive gravity , classical mechanics , metric expansion of space , cosmology , dark energy , graviton , quantum mechanics , quantum entanglement , astrophysics , quantum
Besides great achievements and many nice properties, general relativity as theory of gravity is not a complete theory. There are many attempts to its modification. One of promising modern approaches towards more complete theory of gravity is its nonlocal modification. We present here a brief review of nonlocal gravity with some its cosmological solutions. In particular, we pay special attention to two attractive nonlocal models, in which nonlocality is expressed by an analytic function of the d?Alembert operator ? = 1/?-g ???-gg????. In these models, we are mainly interested in nonsingular bounce solutions for the cosmic scale factor.