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arXiv · 2605.15045

Can a late-time cosmological model based on baby universe absorption explain the z-variation of w?

Jan Ambjorn·Yoshiyuki Watabiki
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Abstract

We point out that a simple late-time cosmological model where our Universe can absorb "baby universes" explains the exponential expansion of our universe without the need of a cosmological constant and leads to a z-dependence of the parameter w(z) in the equation of state. In this model w(z) is less than -1 for z sufficiently large.

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Jan Ambjorn, Yoshiyuki Watabiki. 2026-05-14. Can a late-time cosmological model based on baby universe absorption explain the z-variation of w?. https://arxiv.org/abs/2605.15045

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