# Entropy of contracting universe in cyclic cosmology

@article{Baum2008EntropyOC, title={Entropy of contracting universe in cyclic cosmology}, author={Lauris Baum and Paul H. Frampton}, journal={Modern Physics Letters A}, year={2008}, volume={23}, pages={33-36} }

Following up a recent proposal1 for a cyclic model based on phantom dark energy, we examine the content of the contracting universe (cu) and its entropy Scu. We find that beyond dark energy, the universe contains on average zero or an unlikely single photon which if present immediately after turnaround would have infinitesimal energy that blue shifts eventually to produce e+e- pairs. These statements are independent of the equation of state ω = p/ρ of dark energy provided ω < -1. Thus Scu = 0…

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