Constraints on Deflation from the Equation of State of Dark Energy

Details Constraints on Deflation from the Equation of State of Dark Energy Constraints on Deflation from the Equation of State of Dark Energy

2008-01-29

arxiv.org/abs/0801.4420v2

JCAP 0804:032,2008

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 3 figures, typos fixed

Scientific paper

10.1088/1475-7516/2008/04/032

In cyclic cosmology based on phantom dark energy the requirement that our universe satisfy a CBE-condition ({\it Comes Back Empty}) imposes a lower bound on the number $N_{\rm cp}$ of causal patches which separate just prior to turnaround. This bound depends on the dark energy equation of state $w = p/\rho = -1 - \phi$ with $\phi > 0$. More accurate measurement of $\phi$ will constrain $N_{\rm cp}$. The critical density $\rho_c$ in the model has a lower bound $\rho_c \ge (10^9 {\rm GeV})^4$ or $\rho_c \ge (10^{18} {\rm GeV})^4$ when the smallest bound state has size $10^{-15}$m, or $10^{-35}$m, respectively.

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