A bare-bones cosmological model of artificial infection spread finds that spawn rates above roughly one per million galaxies at 0.1c would infect half the universe by today, tightening constraints on aggressive self-propagating technology.
Expanding advanced civilizations in the universe
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abstract
The 1950 lunch-table remark by Enrico Fermi `Where is everybody' has started intensive scientific and philosophical discussions about what we call nowadays the `Fermi paradox': If there had been ever a single advanced civilization in the cosmological history of our galaxy, dedicated to expansion, it would have had plenty of time to colonize the entire galaxy via exponential growth. No evidence of present or past alien visits to earth are known to us, leading to the standard conclusion that no advanced expanding civilization has ever existed in the milky-way \cite{Webb}. This conclusion rest fundamentally on the ad-hoc assumption, that any alien civilizations dedicated to expansion at one time would remain dedicated to expansions forever. Considering our limited knowledge about alien civilizations we need however to relax this basic assumption. Here we show that a substantial and stable population of expanding advanced civilization might consequently exist in our galaxy.
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astro-ph.CO 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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The Cosmological Hart-Tipler Conjecture
A bare-bones cosmological model of artificial infection spread finds that spawn rates above roughly one per million galaxies at 0.1c would infect half the universe by today, tightening constraints on aggressive self-propagating technology.