Constraining the dark energy statefinder hierarchy in a kinematic approach

Understand

In the present work, we have adopted a kinematic approach for constraining the extended null diagnostic of concordance cosmology, known as the statefinder hierarchy.

• A Taylor series expansion of the Hubble parameter has been utilised for the reconstruction.
• The coefficients of the Taylor series expansion are related to the kinematical parameters like the deceleration parameter, cosmological jerk parameter etc.
• The present values of the kinematical parameters are constrained from the estimated values of those series coefficients.