The Devourer Universe: Dark Energy from World Mergers ✦

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

arXiv:2605.15045v1 · 2026-05-14 · CC BY · ⏱ 1 min · General Relativity Cosmology HEP Theory

A model where our Universe absorbs baby universes, expands exponentially without a cosmological constant, and predicts the evolution of w(z).

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The universe expands at an accelerating rate, but the reason may not be mysterious dark energy but that it devours other universes. Cosmic cannibalism: baby worlds born from quantum foam merge with ours, increasing its volume. The 'appetite' constant g is perhaps set by quantum gravity. This explains the tiny density of dark energy and paints a future where we are part of an ecosystem multiverse.

🎯 If the model is correct, every second our Universe absorbs an unimaginable number of baby universes, and it's this continuous 'dinner' that makes it expand faster and faster.

🎬 The plot echoes Isaac Asimov's novel 'The Gods Themselves,' where contact with a para-universe gradually changes physical laws—though there it leads to catastrophe, here to accelerated expansion.

\left(\frac{\dot{a}}{a}\right)^2 = \frac{\kappa \rho(v)}{3} + \frac{\kappa \rho_f(v)}{3}

The expansion rate is determined by ordinary matter and the effective density from the merger of universes.

w_f = \frac{P_f}{\rho_f} = \frac{f(p)\left(\frac{2}{3}f''(p) - 1\right)}{\frac{1}{3}(f'(p))^2 - f(p)} - 1

Expression for w via the absorption function f(p); its evolution mimics dark energy with w < –1.

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The Devourer Universe: Dark Energy from World Mergers ✦