https://doi.org/10.1140/epjp/s13360-025-05977-y
Regular Article
Role of spatial curvature in a dark energy interacting model
Department of Physics, Indian Institute of Science Education and Research Bhopal, 462066, Bhopal, India
Received:
20
June
2024
Accepted:
1
January
2025
Published online:
19
January
2025
This paper investigates the effects of spatial curvature in a model where dark matter and dark energy interact. The analysis employs a range of datasets, including CMB, BAO, Type Ia Supernova, H(z) from cosmic chronometers, 
measurements from Megamasers and SH0ES, growth rate data and strong lensing time-delay measurements, to assess the model’s fit and explore the late-time dynamics of the interacting dark sector in a non-flat cosmological framework. The study indicates that introducing curvature does affect the Hubble constant () and the structure growth parameter (
) and also helps in alleviating the tensions between early and late universe observations to some extent. The observational data show an indication for an open universe. This implies that the presence of curvature and its influence on Universe’s evolution cannot be neglected entirely.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
