# Propagation of gravitational waves in a universe with slowly-changing equation of state

@article{Schluessel2014PropagationOG, title={Propagation of gravitational waves in a universe with slowly-changing equation of state}, author={Edmund Schluessel}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2014} }

An exact solution for the expansion of a flat universe with dark energy evolving according to a simple model is explored. The equation for weak primordial gravitational waves propagating in this universe is solved and explored; gravitational waves in a flat cosmology possessing both a "big bang" singularity and a "big rip" singularity can be described with confluent Heun functions. We develop approximation methods for confluent Heun equations in regimes of interest to gravitational wave…

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