Superseed Cosmology and the Generation of Daughter Universes

This work develops a cosmological theory in which the extremely long-term evolution of an accelerating universe leads, within a physically relevant but finite history, to the fragmentation of the cosmos into gravitationally closed and causally isolated domains. In the proposed framework, the entire decisive dynamics take place within a plausible time window of order 10^15–10^18 years, although preparatory subprocesses begin much earlier. Within each domain, matter progressively converges toward one or a few final ultramassive black holes, here called superseeds, with characteristic masses of order 10^13–10^16 solar masses. The decisive point of the theory is not the horizon of these objects, but their deep internal region: curvature grows until it reaches a critical threshold of order K_crit ≈ 1/(Planck length)^4, beyond which the classical description can no longer constitute the ultimate physical state of the system. In this regime, internal collapse converges toward an extreme limit, here described as the needle's tip: not merely a geometrical point of the classical metric, but the terminal point of convergence of the classical phase itself. The central thesis is that, once this limit is reached, the superseed neither expels matter nor opens a region inside the old universe; rather, the superseed itself transitions into a new phase of spacetime. The new domain thus comes into being as a daughter universe endowed with its own internal dynamics; if initially dominated by effective vacuum energy, it naturally enters a phase of accelerated expansion that may serve as the prehistory of the hot Big Bang. Correspondingly, the parent universe progressively loses all physically operative content, until it remains solely as a geometric-mathematical structure devoid of matter, interactions, and observers. The theory is formulated in continuity with standard cosmology in its observationally confirmed phases, but extends its dynamics toward the final regime of extreme gravitational convergence, treated as an outcome attainable on immense but finite timescales.