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Spacetime could be a Superfluid

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  • Spacetime could be a Superfluid

    I have often wondered if this was the case, if space is a fluid riding a wave that is spreading out, could help explain dark matter and dark energy eventually if it were the case.

    Think about it we actually "swim" in O2 in gas form, no reason not to think Space time is a fluid or gas.


    What is gravity?

    For you and me, the question is relatively straightforward—it’s what keeps our feet on the ground, computers on our laps, and water in our glass. But for physicists, it’s not that simple.

    Gravity forms the foundation of general relativity, the theory that much of modern physics is built on. It warps spacetime and allows galaxies, stars, and planets to form. It’s helped us make sense of the universe, but it’s also hard to reconcile with quantum mechanics, the leading theory that describes most of what general relativity doesn’t—the really small stuff.

    water-bubbles
    A new theory says that spacetime may be a superfluid.
    Physicists have been searching for years for ways to get gravity to agree with quantum mechanics. That search has produced string theory, causal dynamical triangulation, and others which seek to break gravity down into its component parts. Now, Stefano Liberati of the International School for Advanced Studies and Luca Maccione of Ludwig Maximilian University think they have a better approach.

    Spacetime, they say, can be understood as a liquid. A superfluid, really, composed of fundamental objects we may not have discovered yet. Spacetime’s properties then emerge, like water, which has emergent properties like fluidity and cohesion when H2O molecules are grouped together at the right temperature and pressure.

    Clara Moskowitz, reporting for Scientific American:

    In this analogy particles would travel through spacetime like waves in an ocean, and the laws of fluid mechanics—condensed matter physics—would apply. Previously physicists considered how particles of different energies would disperse in spacetime, just as waves of different wavelengths disperse, or travel at different speeds, in water. In the latest study Liberati and Maccione took into account another fluid effect: dissipation. As waves travel through a medium, they lose energy over time. This dampening effect would also happen to photons traveling through spacetime, the researchers found. Although the effect is small, high-energy photons traveling very long distances should lose a noticeable amount of energy, the researchers say.

    Liberati and Maccione have their eyes and instruments trained on the Crab Nebula, a source of high-energy X-rays and gamma rays. They’re hoping that changes in that radiation as it travels to Earth will help test their superfluid theory.

    Currently, the superfluid theory doesn’t seem to have many supporters. But then again, neither did Einstein at first. If Liberati and Maccione are proven correct, they could finally unite the two theories of physics into one.

    More below:
    http://www.pbs.org/wgbh/nova/next/ph...aign=nova_next

  • #2
    Damn good science article.

    Comment


    • #3
      Could someone dumb it down for me more?

      Comment


      • #4
        Originally posted by Broncos_OTM View Post
        Could someone dumb it down for me more?
        There is a hypothesis in general relativity that says "the experience of time my only be a local phenomenon. " The article above 8s talking about how the way space curves and expands that lends itself to this theory.

        Got it? Not trying to be a smart ass.

        Comment


        • #5
          Originally posted by UltimateHoboW/Shotgun View Post
          There is a hypothesis in general relativity that says "the experience of time my only be a local phenomenon. " The article above 8s talking about how the way space curves and expands that lends itself to this theory.

          Got it? Not trying to be a smart ass.
          I never spent a lot of time with this sort of stuff. Its interesting for sure though. And yes it makes sense.the k you

          Comment


          • #6
            Originally posted by Broncos_OTM View Post
            Could someone dumb it down for me more?
            I'll try.

            The universe, which is matter and time together, has evidence of the big bang theory. But the big bang didn't blow up like dynamite, it was more like and even sphere that spread all matter out quickly in all directions, and strangely uniformly. So how did all matter expand so uniformly everywhere in fractions of a second?

            If you look at this paper, They have detected "ripples" in space and time which corroborates the theory that the universe was an even, rapid expansion. But an expansion of what? What is the "nothing" that is pulling the universe outward so evenly? They even have determined it is accelerating, not slowing down, like a current drawing all matter apart.

            They call it dark matter and it is little understood. This article suggests the makeup of the universe is riding on a liquid-like ocean of dark matter, space and time, and that we should try and analyze and research its behavior like it is a body of water to understand the mechanics of it.

            So maybe gravitational forces are drains of space time and as bodies, like boats float toward the drains, the pace around these points increases. And all matter is being pulled on a wave outward.
            Last edited by Kaylore; 06-19-2014, 09:41 PM.

            Comment


            • #7
              Originally posted by Broncos_OTM View Post
              Could someone dumb it down for me more?
              The universe is made of orange juice.

              Comment


              • #8
                Originally posted by bowtown View Post
                The universe is made of orange juice.
                Also, this.

                Comment


                • #9
                  Originally posted by Kaylore View Post
                  I'll try.

                  The universe, which is matter and time together, has evidence of the big bang theory. But the big bang didn't blow up like dynamite, it was more like and even sphere that spread all matter out quickly in all directions, and strangely uniformly. So how did all matter expand so uniformly everywhere in fractions of a second?

                  If you look at this paper, They have detected "ripples" in space and time which corroborates the theory that the universe was an even, rapid expansion. But and expansion of what? What is the "nothing" that is pulling the universe outward so evenly? They even have determined it is accelerating, not slowly down, like a current drawing all matter apart.

                  They call it dark matter and it is little understood. This article suggests the makeup of the universe is riding on a liquid-like ocean of dark matter, space and time, and that we should try and analyze and research its behavior like it is a body of water to understand the mechanics of it.

                  So maybe gravitational forces are drains of space time and as bodies, like boats float toward the drains, the pace around these points increases. And all matter is being pulled on a wave outward.
                  awesome explanation kaylore. That's pretty cool stuff i discovered I have the science channel. Ill tune in

                  Comment


                  • #10
                    Originally posted by Kaylore View Post
                    I'll try.

                    The universe, which is matter and time together, has evidence of the big bang theory. But the big bang didn't blow up like dynamite, it was more like and even sphere that spread all matter out quickly in all directions, and strangely uniformly. So how did all matter expand so uniformly everywhere in fractions of a second?

                    If you look at this paper, They have detected "ripples" in space and time which corroborates the theory that the universe was an even, rapid expansion. But and expansion of what? What is the "nothing" that is pulling the universe outward so evenly? They even have determined it is accelerating, not slowly down, like a current drawing all matter apart.

                    They call it dark matter and it is little understood. This article suggests the makeup of the universe is riding on a liquid-like ocean of dark matter, space and time, and that we should try and analyze and research its behavior like it is a body of water to understand the mechanics of it.

                    So maybe gravitational forces are drains of space time and as bodies, like boats float toward the drains, the pace around these points increases. And all matter is being pulled on a wave outward.
                    Amazing. I like the way you explain it. I have always envisioned the big bang as a explosion.. i think because that is the only thing to compare it to here on earth. But an expansion is something that blows my mind. Certainly raises more questions than answers. Absolutely brilliant and facinating to visualize

                    Comment


                    • #11
                      Originally posted by Kevin8Nine View Post
                      But an expansion is something that blows my mind.

                      Comment


                      • #12
                        Originally posted by Kaylore View Post
                        I'll try.

                        The universe, which is matter and time together, has evidence of the big bang theory. But the big bang didn't blow up like dynamite, it was more like and even sphere that spread all matter out quickly in all directions, and strangely uniformly. So how did all matter expand so uniformly everywhere in fractions of a second?

                        If you look at this paper, They have detected "ripples" in space and time which corroborates the theory that the universe was an even, rapid expansion. But an expansion of what? What is the "nothing" that is pulling the universe outward so evenly? They even have determined it is accelerating, not slowing down, like a current drawing all matter apart.

                        They call it dark matter and it is little understood. This article suggests the makeup of the universe is riding on a liquid-like ocean of dark matter, space and time, and that we should try and analyze and research its behavior like it is a body of water to understand the mechanics of it.

                        So maybe gravitational forces are drains of space time and as bodies, like boats float toward the drains, the pace around these points increases. And all matter is being pulled on a wave outward.
                        can someone dumb this down?

                        so the planets are like pulp in OJ and we are all eventually going to settle on the bottom unless god decides to stir up the cup with a straw? Got it!!

                        Comment


                        • #13

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                          • #14
                            It is more like a toilet bowl. Some areas of the universe are like floating turds and some are sinkers. Then there is diarrhea which spreads and has some pieces that float and some that sink. When you flush, that's gravity.

                            Comment


                            • #15
                              Originally posted by LRtagger View Post
                              It is more like a toilet bowl. Some areas of the universe are like floating turds and some are sinkers. Then there is diarrhea which spreads and has some pieces that float and some that sink. When you flush, that's gravity.
                              This to was helpful. Thank you for your contribution to science.

                              Comment

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