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posted by Fnord666 on Sunday October 27 2019, @12:12AM   Printer-friendly
from the 3-2-1-Universe! dept.

Submitted via IRC for Bytram

Putting the 'bang' in the Big Bang: Physicists simulate critical 'reheating' period that kickstarted the Big Bang in the universe's first fractions of a second

As the Big Bang theory goes, somewhere around 13.8 billion years ago the universe exploded into being, as an infinitely small, compact fireball of matter that cooled as it expanded, triggering reactions that cooked up the first stars and galaxies, and all the forms of matter that we see (and are) today.

Just before the Big Bang launched the universe onto its ever-expanding course, physicists believe, there was another, more explosive phase of the early universe at play: cosmic inflation, which lasted less than a trillionth of a second. During this period, matter -- a cold, homogeneous goop -- inflated exponentially quickly before processes of the Big Bang took over to more slowly expand and diversify the infant universe.

Recent observations have independently supported theories for both the Big Bang and cosmic inflation. But the two processes are so radically different from each other that scientists have struggled to conceive of how one followed the other.

Now physicists at MIT, Kenyon College, and elsewhere have simulated in detail an intermediary phase of the early universe that may have bridged cosmic inflation with the Big Bang. This phase, known as "reheating," occurred at the end of cosmic inflation and involved processes that wrestled inflation's cold, uniform matter into the ultrahot, complex soup that was in place at the start of the Big Bang.

"The postinflation reheating period sets up the conditions for the Big Bang, and in some sense puts the 'bang' in the Big Bang," says David Kaiser, the Germeshausen Professor of the History of Science and professor of physics at MIT. "It's this bridge period where all hell breaks loose and matter behaves in anything but a simple way."

Journal Reference:
Rachel Nguyen, Jorinde van de Vis, Evangelos I. Sfakianakis, John T. Giblin, David I. Kaiser. Nonlinear Dynamics of Preheating after Multifield Inflation with Nonminimal Couplings. Physical Review Letters, 2019; 123 (17) DOI: 10.1103/PhysRevLett.123.171301


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  • (Score: 0, Offtopic) by Ethanol-fueled on Sunday October 27 2019, @02:07AM (10 children)

    by Ethanol-fueled (2792) on Sunday October 27 2019, @02:07AM (#912260) Homepage

    Huh. You must be teaching Swedish elementary school. The globalists are attacking us, and their dangerous useful idiots such as Pelosi and AOC are tamping us down. To succeed, we must win the fight, no matter what happens.

    Our victory will start with Trump and Flynn exposing the scum. I fly under the banner of Gowron. We will succeed against the seditionist traitors.

    Starting Score:    1  point
    Moderation   -1  
       Offtopic=2, Interesting=1, Total=3
    Extra 'Offtopic' Modifier   0  

    Total Score:   0  
  • (Score: -1, Flamebait) by Ethanol-fueled on Sunday October 27 2019, @02:09AM (5 children)

    by Ethanol-fueled (2792) on Sunday October 27 2019, @02:09AM (#912262) Homepage

    Do you hear me, you globalist fucks? Your time is nigh, and you will be shot dead in your own bedchambers. Bring it on, you CIA shits.

    • (Score: 0, Offtopic) by Ethanol-fueled on Sunday October 27 2019, @02:16AM (4 children)

      by Ethanol-fueled (2792) on Sunday October 27 2019, @02:16AM (#912263) Homepage

      You tried to kill me 13 years ago. Now, I will ensure that every last one of you motherfuckers is going to hang.

      • (Score: 0) by Anonymous Coward on Sunday October 27 2019, @02:52AM (1 child)

        by Anonymous Coward on Sunday October 27 2019, @02:52AM (#912269)

        Who exactly is "ClownHatLinux", and why is he submitting articles that trigger the Fuelled by Ethanol one? And why do the Eds obfuscate the origin of SoylentNews Stories? Is this what they want us to think?

        • (Score: 1) by RandomFactor on Sunday October 27 2019, @03:20AM

          by RandomFactor (3682) Subscriber Badge on Sunday October 27 2019, @03:20AM (#912280) Journal

          Clownhatlinux was a joke on the IRC channel.
          .
          [23:36:40] [Bender] �[SoylentNews]� - No 'Silver Bullet' Fix for Alexa, Google Smart Speaker Hacks - https://sylnt.us [sylnt.us] - I-heard-what-you-did-last-night
          [23:38:13] [AzumaHazuki] oh there's a simple solution: �don't fucking buy things that spy on you, clownhat!
          [23:44:06] [chromas] That doesn't sound right
          [23:44:43] * AzumaHazuki likes insults with the substring "clown" in them
          [23:45:32] [chromas] clownctl to major tom
          [23:46:49] [AzumaHazuki] shit, systemd added MORE stuff?
          [23:47:06] [chromas] well it has a bootloader
          [23:47:12] [chromas] but hey now, *ctl predates systemd
          [23:47:16] [AzumaHazuki] i can see it now...clownctl bite, clownctl throw_in_basement...
          [23:47:37] [RandomFactor] Sounds like an idea for a new bot name
          [23:48:03] upstart is now known as ClownHatLinux
          [23:48:22] [RandomFactor] ClownHatLinux++
          [23:48:22] [Bender] �karma - �clownhatlinux: 1

          --
          В «Правде» нет известий, в «Известиях» нет правды
      • (Score: 0) by Anonymous Coward on Sunday October 27 2019, @02:56AM (1 child)

        by Anonymous Coward on Sunday October 27 2019, @02:56AM (#912272)

        Why Gowron?

        • (Score: 0) by Anonymous Coward on Sunday October 27 2019, @03:03AM

          by Anonymous Coward on Sunday October 27 2019, @03:03AM (#912274)

          Klingons are the niggers of Star Trek.

  • (Score: 1) by RandomFactor on Sunday October 27 2019, @02:32AM (3 children)

    by RandomFactor (3682) Subscriber Badge on Sunday October 27 2019, @02:32AM (#912265) Journal

    I believe Runaway's Swedish education reference is regarding the postmodern social-constructivist philosophy used in Swedish schools, which posits that

    knowledge and reality are subjectively constructed, which implies that knowledge cannot be transferred from teacher to student and that objectively measuring academic ability and achievement should not even be attempted. Instead, students should be given freedom of choice in their learning and work independently to acquire supposedly general skills such as creativity and critical thinking, which are considered more durable than ‘facts’ arbitrarily arranged in core subjects.

    --
    В «Правде» нет известий, в «Известиях» нет правды
    • (Score: 2) by aristarchus on Sunday October 27 2019, @02:57AM (2 children)

      by aristarchus (2645) on Sunday October 27 2019, @02:57AM (#912273) Journal

      Did I miss something? Runaway made a reference to "education"? And "Swedish Education" at that? Will wonders never cease? I guess even a parrot can be taught to repeat certain sound sequences, by its Russian masters.

      • (Score: 1) by RandomFactor on Sunday October 27 2019, @03:42AM (1 child)

        by RandomFactor (3682) Subscriber Badge on Sunday October 27 2019, @03:42AM (#912285) Journal

        The reference is not meant to be...flattering...

        --
        В «Правде» нет известий, в «Известиях» нет правды
        • (Score: -1, Flamebait) by Anonymous Coward on Monday October 28 2019, @05:28AM

          by Anonymous Coward on Monday October 28 2019, @05:28AM (#912664)

          And it seems we have lost Runaway, he was told there would be not math, or thinking. Just Make Andromeda Great Again! And, it is only a little galaxy.