TL;DR
This paper reviews nonlocal modifications of gravity, focusing on cosmological solutions and bounce models that could address singularities in the universe's evolution.
Contribution
It provides a concise overview of nonlocal gravity models and highlights specific nonsingular bounce solutions in two particular models.
Findings
Identification of nonsingular bounce solutions in nonlocal gravity models
Analysis of cosmological implications of nonlocal modifications
Comparison of different nonlocal gravity models
Abstract
Despite many nice properties and numerous achievements, general relativity is not a complete theory. One of actual approaches towards more complete theory of gravity is its nonlocal modification. We present here a brief review of nonlocal gravity with its cosmological solutions. In particular, we pay special attention to two nonlocal models and their nonsingular bounce solutions for the cosmic scale factor.
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