# Simple-graduated dark energy and spatial curvature

@article{Acquaviva2021SimplegraduatedDE, title={Simple-graduated dark energy and spatial curvature}, author={Giovanni Acquaviva and {\"O}zg{\"u}r Akarsu and Nihan Katırcı and Jose Alberto V{\'a}zquez}, journal={Physical Review D}, year={2021} }

In this work, we first discuss the possibility that dark energy models with negative energy density values in the past can alleviate the H0 tension, as well as the discrepancy with the baryon acoustic oscillation (BAO) Lyman-α data, both which prevail within the ΛCDM model. We then investigate whether two minimal extensions of the ΛCDM model, together or separately, can successfully realize such a scenario: (i) the spatial curvature, which, in the case of spatially closed universe, mimics a…

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