{"id":501824,"date":"2026-06-16T03:34:12","date_gmt":"2026-06-16T03:34:12","guid":{"rendered":"https:\/\/www.newsbeep.com\/ie\/501824\/"},"modified":"2026-06-16T03:34:12","modified_gmt":"2026-06-16T03:34:12","slug":"scientists-built-a-tiny-universe-and-watched-time-emerge-from-chaos","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ie\/501824\/","title":{"rendered":"Scientists Built a Tiny \u201cUniverse\u201d And Watched Time Emerge From Chaos"},"content":{"rendered":"

Time froze<\/a>. Not in some Matrix-like Hollywood fantasy, but in a real lab at the University of Birmingham<\/a> where physicist Giovanni Barontini built a miniature universe<\/a> and watched it invent its own clock. Using roughly 24,000 rubidium atoms cooled to near absolute zero, Barontini created what amounts to a cosmic snow globe\u2014complete with its own Big Bang, expansion, and Big Crunch cycles that repeat every 120 milliseconds.<\/p>\n

The setup sounds like science fiction made concrete. Atoms get trapped by intersecting laser beams, then divided by an optical barrier into a \u201cbright sector\u201d you can observe and a \u201cdark sector\u201d that stays hidden. Think of it as a cosmic border crossing where atoms can migrate between regions, carrying entropy<\/a>\u2014basically disorder\u2014with them.<\/p>\n

When Internal Clocks Override External Time<\/p>\n

Entropy flow between atom sectors creates time variable that can freeze while lab clocks keep ticking.<\/p>\n

Here\u2019s where things get Netflix\u2019s \u201cDark\u201d levels of weird. Instead of measuring events against a normal stopwatch, Barontini constructed an \u201centropic time<\/a>\u201c based purely on how disorder flowed between his bright and dark sectors. When entropy exchanged rapidly, this internal clock raced forward. When entropy flow nearly stopped, internal time essentially froze\u2014even though the lab\u2019s wall clock kept ticking away like nothing happened.<\/p>\n

The implications challenge conventional understanding. During the gaps between a mini Big Crunch and the next mini Big Bang, when no entropy flowed, literally no internal time elapsed. From the system\u2019s perspective, those intervals don\u2019t exist as \u201ctime passing\u201d at all.<\/p>\n

Testing Quantum Gravity\u2019s Biggest Mystery<\/p>\n

Experiment provides concrete testbed for \u201crelational time\u201d theories that suggest time emerges from internal correlations.<\/p>\n

This connects to physics\u2019 most challenging puzzle: the \u201cproblem of time<\/a>.\u201d When you try to quantum-mechanically describe the universe<\/a> using equations like Wheeler-DeWitt, external time vanishes entirely. The universe exists, but without any cosmic grandfather clock ticking in the background. Barontini\u2019s atom cloud provides a controlled testbed where time becomes relational\u2014defined by correlations between different parts of the system rather than imposed from outside.<\/p>\n

His mathematical model, formulated in terms of entropic time, matched the experimental data<\/a> closely. That\u2019s not just mathematical sleight of hand; it suggests this internal time construction has genuine predictive power.<\/p>\n

The experiment doesn\u2019t solve how time works in our actual cosmos\u2014this mini-universe follows standard quantum mechanics, not Einstein\u2019s full spacetime equations. But it transforms purely theoretical discussions about emergent time into something you can measure, test, and refine with real data.<\/p>\n

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