Cosmic Bellows: How Eternal Inflation Resurrects the Universe from the Ashes ✦

Original: "The cosmological inflation inside the cyclic model of the universe"

arXiv:2605.15374v1 · 2026-05-14 · CC BY 4.0 · ⏱ 1 min · General Relativity

Inflation is not a single event, but a recurring phase that inflates the Universe after each contraction cycle, like bellows fanning a forge.

Links in the knowledge graph 1

The Universe did not explode once — it breathes like blacksmith’s bellows. Compression to Planck-scale sizes and a bounce ignite inflation, like a blast of oxygen into a furnace. Two scalar fields — the handle and the valve — forge a new cosmos from the ashes, and gravitational waves from past cycles may already be trembling in the polarization of the cosmic microwave background.

🎯 If inflation indeed repeats, then the observed homogeneity of our Universe may be the echo of inflationary phases in countless previous cycles, and gravitational waves from those eras may have left a faint imprint in the polarization of the cosmic microwave background.

🎬 Cyclic cosmology with repeated acts of creation has also inspired science fiction writers: in Paul Anderson's novel 'Worlds Without End,' the protagonists witness the collapse of the cosmos and a new Big Bang.

n_s \approx 1 - \frac{2}{N_{\text{CMB}}}

Dependence of the spectral index on the number of e-folds N_CMB; substituting N_CMB=50–60 gives n_s≈0.965, which matches the observed value.

\frac{\ddot{a}}{a} = -\frac{8\pi G}{3}\left(\dot{\phi}^2 + \dot{\varphi}^2 + b(\phi,\varphi)\dot{\varphi}\dot{\phi} - V_{IC} + \frac{1}{2}\beta^4\rho_M + \beta^4\rho_R\right)

Determines the phase of accelerated expansion; inflation occurs when the potential energy of the scalar fields dominates (negative sign in front of V_{IC}).

I am the author

Cosmic Bellows: How Eternal Inflation Resurrects the Universe from the Ashes ✦