conv.

All stories
ScienceQuiet 5d · day 9

Physicists create miniature universe showing time emerges without external clock

University of Birmingham experiment with ultracold atoms demonstrates time may arise from internal changes rather than be fundamental to reality.

newest coverage 4d agosummary written 7d ago9 pieces NewswiresGoogle NewsMastodon

What to know

  • Researchers created an isolated quantum system with 24,000 ultracold atoms that expands and contracts, demonstrating time can emerge from internal changes without an external clock.
  • The experiment provides laboratory evidence for theoretical physics ideas that time may not be fundamental but arises from relationships and changes within the universe.
  • The work addresses a central puzzle in quantum gravity: if the universe has no external clock, how do events occur in sequence?

“If the universe has no external clock, how can anything happen in a particular order? What determines which events come first and which happen later?”

Science Daily explaining theoretical puzzle · Science Daily ↗

Giovanni Barontini Physicist, University of BirminghamUniversity of Birmingham Research institution

Physicists create miniature universe showing time emerges without external clock
sciencedaily.com

How it unfolded 1 development · click the chart to see its coverage articlesposts

Peak 4 pieces in 3h at Oct 30, 7 AM; 9 pieces over 9 days (7 articles · 2 posts) Oct 30, 7 AM — 4 pieces · 4 articles — Google News 3, Newswires 1Oct 30, 10 AM — quietOct 30, 1 PM — 1 piece · 1 post — Mastodon 1Oct 30, 4 PM — quietOct 30, 7 PM — quietOct 30, 10 PM — quietOct 31, 1 AM — quietOct 31, 4 AM — quietOct 31, 7 AM — quietOct 31, 10 AM — quietOct 31, 1 PM — quietOct 31, 4 PM — quietOct 31, 7 PM — quietOct 31, 10 PM — quietNov 1, 1 AM — quietNov 1, 3 AM — quietNov 1, 6 AM — 2 pieces · 2 articles — Google News 2Nov 1, 9 AM — quietNov 1, 12 PM — quietNov 1, 3 PM — quietNov 1, 6 PM — quietNov 1, 9 PM — quietNov 2, 12 AM — quietNov 2, 3 AM — quietNov 2, 6 AM — quietNov 2, 9 AM — quietNov 2, 12 PM — quietNov 2, 3 PM — quietNov 2, 6 PM — 1 piece · 1 post — Mastodon 1Nov 2, 9 PM — quietNov 3, 12 AM — quietNov 3, 3 AM — quietNov 3, 6 AM — quietNov 3, 9 AM — quietNov 3, 12 PM — 1 piece · 1 article — Newswires 1Nov 3, 3 PM — quietNov 3, 6 PM — quietNov 3, 9 PM — quietNov 4, 12 AM — quietNov 4, 3 AM — quietNov 4, 6 AM — quietNov 4, 9 AM — quietNov 4, 12 PM — quietNov 4, 3 PM — quietNov 4, 6 PM — quietNov 4, 9 PM — quietNov 5, 12 AM — quietNov 5, 3 AM — quietNov 5, 6 AM — quietNov 5, 9 AM — quietNov 5, 12 PM — quietNov 5, 3 PM — quietNov 5, 6 PM — quietNov 5, 9 PM — quietNov 6, 12 AM — quietNov 6, 3 AM — quietNov 6, 6 AM — quietNov 6, 9 AM — quietNov 6, 12 PM — quietNov 6, 3 PM — quietNov 6, 6 PM — quietNov 6, 9 PM — quietYesterday, 12 AM — quietYesterday, 3 AM — quietYesterday, 6 AM — quietYesterday, 9 AM — quietYesterday, 12 PM — quietYesterday, 3 PM — quietYesterday, 6 PM — quietYesterday, 9 PM — quietToday, 12 AM — quietToday, 3 AM — quietToday, 6 AM — quietToday, 9 AM — quiet 1
Oct 31Nov 1Nov 2Nov 3Nov 4Nov 5Nov 6yesterdaynow · 11:26 AM ET
  1. 1

    Science Daily publishes detailed explanation of miniature universe experiment

    The Science Daily article explains how Professor Giovanni Barontini demonstrated passage of time emerging naturally from particle behavior in the experimental system, without external timekeeping. The experiment divided atoms into 'bright' (observed) and 'dark' (unobserved) regions, with the bright region undergoing repeated expansion-contraction cycles.

    “Using thousands of atoms cooled to temperatures barely above absolute zero, Professor Giovanni Barontini demonstrated that the passage of time can be measured without relying on an external clock.”
    — Science Daily
    • us@pubeurope.com

      https://www. europesays.com/us/1161533/ How One Scientist Made A Mini Universe To Prove We’re Wrong About Time # Science # UnitedStates # UnitedStates # US

      us@pubeurope.comMastodon5d agoview on Mastodon ↗
  2. background

    Barontini's team publishes emergence-of-time findings in Physical Review Research — Researchers at the University of Birmingham published findings from an experiment using 24,000 ultracold atoms cooled to near absolute zero. The system underwent cycles of expansion and contraction mimicking cosmological events, and showed that time could be measured from internal changes without relying on an external clock.

Also covered reported alongside — the timeline has no entry for these yet

  1. 4 outlets Physicists created a tiny universe and watched time emerge without a clock

    first by Science Daily, 9d ago · also Education Times, The Brighter Side of News, Times of India

    3 more headlines
  2. 2 outlets How One Scientist Made A Mini Universe To Prove We're Wrong About Time

    first by BGR, 7d ago · also Yahoo