科研之友
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摘要
In this essay, we propose that the theory of gravity's vacuum is described by a de Sitter geometry. Under this assumption, we consider an adjustment mechanism able to screen any value of the vacuum energy of the matter fields. We discuss the most general scalar-tensor cosmological models with second-order equations of motion that have a fixed de Sitter critical point for any kind of material content. These models give rise to interesting cosmological evolutions that we shall discuss.
- 出版日期2015-10
