# Jerk, snap, and the cosmological equation of state

@article{Visser2003JerkSA,
title={Jerk, snap, and the cosmological equation of state},
author={Matt Visser},
journal={Classical and Quantum Gravity},
year={2003},
volume={21},
pages={2603-2615}
}
• M. Visser
• Published 23 September 2003
• Physics
• Classical and Quantum Gravity
Taylor expanding the cosmological equation of state around the current epoch is the simplest model one can consider that does not make any a priori restrictions on the nature of the cosmological fluid. Most popular cosmological models attempt to be 'predictive', in the sense that once some a priori equation of state is chosen the Friedmann equations are used to determine the evolution of the FRW scale factor a(t). In contrast, a 'retrodictive' approach might usefully take observational data…
372 Citations

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