https://doi.org/10.1140/epjc/s10052-024-13193-8
Regular Article – Theoretical Physics
Revisiting statefinder via Gaussian process
1
School of Science, Dalian Jiaotong University, 116028, Dalian, China
2
School of Physics, Dalian University of Technology, 116024, Dalian, China
Received:
14
June
2024
Accepted:
30
July
2024
Published online:
21
August
2024
The statefinder diagnostic is useful to discriminate dark energy models. In this paper, under the minimum assumption of a spatially flat Friedmann–Lemaître–Robertson–Walker Universe, we reconstruct the statefinder pair 
in addition to the deceleration parameter q(z) via the Gaussian process from the cosmic observational data points which include the recently released Pantheon+ SN Ia samples and the observational Hubble data H(z). The reconstructed evolution trajectories are shown on the 
, 
planes. The reconstructed q(z) is consistent with previous studies. Meanwhile, a novel quantity named suitability is introduced on the , planes to assess the validation of a dark energy model.
© The Author(s) 2024
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Funded by SCOAP3.
