Structure formation in non-local bouncing models

Abstract In this study, we investigate the growth of structures within Deser-Woodard nonlocal theory and extend it to various bouncing cosmology scenarios. Our findings show that observable structure rate, fσ 8 , in a vacuum-dominated universe is finite redshift range 0 < z 2, contrary previous literature. Although exhibits no divergences, observe slight difference between evolution ΛCDM non-local DW II models. Regarding formation cosmologies, evaluate near point. Among different cases explore, oscillatory bounce pre-inflationary asymmetrical demonstrate physical profile where rate begins as small perturbation early epoch increases with inflation, which can be regarded seeds large-scale structures. These are significant because they shed light on seed fluctuations into cosmic resulting from effects.