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Dark Matter --"The Tip of an Iceberg of Another World Unrelated to Ours"

 

 

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Answering the observation that the dark matter particle might not be detectable at a colloquium organized by the Kavli Institute for Cosmological Physics at the University of Chicago, Michael Turner, a theoretical cosmologist trained in both particle physics and astrophysics who coined the term “dark energy,” said that for 20 to 30 years, this idea that dark matter is part of a unified theory has been our Holy Grail and has led to the WIMP hypothesis and the belief that the dark matter particle is detectable. "But there’s a new generation of physicists that is saying, 'Well, there's an alternative view. Dark matter is actually just the tip of an iceberg of another world that is unrelated to our world. And I cannot even tell you about that world. There are no rules for that other world, at least that we know of yet.

"Ten years ago," Turner says, "I don't think you would've found astronomers, cosmologists, and particle physicists all agreeing that dark matter was really important. And now, they do. And all of them believe we can solve the problem soon. It's wonderful listening to particle physicists explain the evidence for dark matter, and vice versa –astronomers explaining WIMPs as dark matter. "

"As cosmologists," said Rocky Kolb, who studies the application of elementary-particle physics to the very early Universe, and is the co-author with Michael Turner of The Early Universe, the standard textbook on particle physics and cosmology, "one of our jobs is to understand what the universe is made of. To a good approximation, the galaxies and other structures we see in the universe are made predominantly of dark matter. We have concluded this from a tremendous body of evidence, and now we need to discover what exactly is dark matter. The excitement now is that we are closing in on an answer, and only once in the history of humans will someone discover it. "

"Nothing in cosmology makes sense without dark matter, says Turner. "We needed it to form galaxies, stars and other structures in the Universe. And so it's absolutely central to cosmology. We also know that none of the particles known to exist can be the dark matter particle. So it has to be a new particle of nature. Remarkably, our most conservative hypothesis right now is that the dark matter is a new form of matter – out there to be discovered and to teach us about particle physics."

"Dark matter is absolutely central to cosmology, said Turner, "and the evidence for it comes from many different measurements: the amount of deuterium produced in the big bang, the cosmic microwave background, the formation of structure in the Universe, galaxy rotation curves, gravitational lensing, and on and on."

"There is five times more dark matter than ordinary matter, and its existence allows us to understand the history of the universe beginning from a formless particle soup until where we are today," said Turner. "If you said, 'You no longer have dark matter,' our current cosmological model would collapse. We would be back to square one."

"Dark matter particles, or WIMPs," said Turner, "don’t interact with ordinary matter often. It's taken 25 years to improve the sensitivity of our detectors by a factor of a million, and now they have a good shot at detecting the dark matter particles. Because of the technological developments, we think we are on the cusp of a direct detection.

 

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"Likewise for indirect detection. We now have instruments like the Fermi satellite (the Fermi Gamma-ray Space Telescope) and the IceCube detector (the IceCube Neutrino Observatory at the South Pole, above) that can detect the ordinary particles (positrons, gamma rays or neutrinos) that are produced when dark matter particles annihilate, indirectly allowing dark matter to be detected. IceCube is big enough to detect neutrinos that are produced by dark matter annihilations in the sun."

Sadly, this point of view could be correct and might mean the solution to the dark matter problem is still very far away, that discovering what dark matter actually is could be 100 years away.

The Daily Galaxy via http://www.kavlifoundation.org and AFP 2013

Comments

Why limit imagination to just one higher energy realm (“dimension”)? I would propose our basic quantum theory to a series of higher energy “realms” (perhaps an infinite number, or just 11 as hypothesized by String theory). Each realm might exhibit “quantum-like”, subtly distinguishable by yet-to-be-identified degeneracies all interlinked by an overall inter-realm logic, a “Grand Canonical Quantum Theory“ with cross-realm tunneling effects such as gravity (wave) leaks via cross-barrier tunneling of next-higher WIMPS (canonical tunneling of “anti”-and “higher order gravitons"). Doesn’t this describe ascending-energy quantum particles? Current LHC research might be just the beginning step to "very high energy" physics (VHEP) which more appropriately should be renamed “Inter-Dimensional Research” (INDR). What’s up there to be found or observed? We’d have to formulate synthesis pathways from WIMPs to WIMP-atoms, molecules etc (maybe easier than first appearances once the concept settles in). “Upper” realm life forms? Who knows? But upper-realm tunneling conceivably could lead to basic inter-realm communication. All of this makes sense if a universe is thought of as a quantum bubble…and why should quantum effects be confined to relatively “micro-scale” energies where earths and first order WIMPS lie?

One follow-on question or critique of these thoughts might be, ‘how might we measure/detect very high order/energy canonical realms? One answer would be that normal earth-bound engineering could never achieve such energies; but nanoscale energetics might well possess extreme energy densities to reach WIMPs and above. For the moment and to detect WIMP origins, we already have natural “LHC-like macro-scale natural accelerators’ in the form of massive black holes. From massive black holes exit extreme energy fluxes/vortexes that can be examined with current and yet-to-be built advanced detectors for 'VHEPs', Very-high-energy-particles” and higher orders, Extreme-energy-particles, 'EEPs'. Higher realm WIMPs should have grand-quantum properties (energy level transition fingerprints) similar to what we are accustomed to study in our own energy-realm. Wouldn’t we be surprised to find that like in our realm, higher order realm particles pack in levels and bands, fluxes, cosmological-scale networks, etc.

Dudes. Bose-Einstein Condensates. There's a small but growing number of evidence that points to BEC's as a likely candidate for dark matter. Think about how cold intergalactic space is, even in the realm of a galactic halo. Heck, it's estimated that interstellar space averages what? 3 degrees Kelvin? I'll bet that coupled with extreme low pressure will change the window to achieve BEC for most materials and gasses quicker than we think. And I'll also wager that if you get several hundered or several thousand light years from the nearest star the ambient temperature of outer space has no problem getting into the microkelvin range. Any nebulous hydrogen is bound to be in BEC form.

Run a google search on "Bose Einstein Condensate" and "Dark Matter" together in the same query. Many astrophysicists are starting to support this theory...

James, my understanding is that the ambient temperature of space - away from the influence of any stars - is indeed 3 degrees, because of the micro-wave background.

A clue on dark matter solution can be found in "A Free Floating Planet" http://bit.ly/UHui4V . Thanks in advance for any comments.

More energetic than the cosmic gamma photons, there should exist dark photons and Planck photons. Dark photons may be the particles of the elusive dark matter.
http://vixra.org/pdf/1303.0207v1.pdf
What is Dark Matter?

If the dark stuff is so much and we the other stuff is so little, then isn't it logical that we--the other stuff- are the result of an usual ?

Science has discovered that vaterite has a crystal within its identifiable crystal. Let's say that applies to all things, there are two phase changes we can see. What kind of advantage would that mean for us?

Isn't Bose-Einstein condesnsates really just ORMES?

Wiki Bose Einstein condensates: Attractive interactions

The experiments led by Randall Hulet at Rice University from 1995 through 2000 showed that lithium condensates with attractive interactions could stably exist, but only up to a certain critical atom number. Beyond this critical number, the attraction overwhelmed the zero-point energy of the harmonic confining potential, causing the condensate to collapse in a burst reminiscent of a supernova explosion where an explosion is preceded by an implosion. By quench cooling the gas of lithium atoms, they observed the condensate to first grow, and subsequently collapse when the critical number was exceeded.

Further experimentation on attractive condensates was performed in 2000 by the JILA team, consisting of Cornell, Wieman and coworkers. They originally used rubidium-87, an isotope whose atoms naturally repel each other, making a more stable condensate. Their instrumentation now had better control over the condensate so experimentation was made on naturally attracting atoms of another rubidium isotope, rubidium-85 (having negative atom–atom scattering length). Through a process called Feshbach resonance involving a sweep of the magnetic field causing spin flip collisions, they lowered the characteristic, discrete energies at which the rubidium atoms bond into molecules, making their Rb-85 atoms repulsive and creating a stable condensate. The reversible flip from attraction to repulsion stems from quantum interference among condensate atoms which behave as waves.

When the JILA team raised the magnetic field strength still further, the condensate suddenly reverted to attraction, imploded and shrank beyond detection, and then exploded, expelling off about two-thirds of its 10,000 or so atoms. About half of the atoms in the condensate seemed to have disappeared from the experiment altogether, not being seen either in the cold remnant or the expanding gas cloud.[16] Carl Wieman explained that under current atomic theory this characteristic of Bose–Einstein condensate could not be explained because the energy state of an atom near absolute zero should not be enough to cause an implosion; however, subsequent mean field theories have been proposed to explain it. The atoms that seem to have disappeared almost certainly still exist in some form, just not in a form that could be accounted for in that experiment. Most likely they formed molecules consisting of two bonded rubidium atoms.[23] The energy gained by making this transition imparts a velocity sufficient for them to leave the trap without being detected.

Is not Bose Einstein condensate ORMES?

Remember...even chaos has rules.

We are the shadow of the dark matter. We exist because if it. We are the alternate universe that lives in linear time within the dark matter.

Dark matter exists with no time, no past, no future.

That would make perfect sense.

could dark matter exist in our universe appearing and disappearing like electrons and photons ala the Cassini effect

Occam's Razor

Dark Matter may not be complicated at all. It's discovery may come from finally seeing something that is there to see, count or detect but we can't do it quite yet with our technology.

Just as likely it may be something we already know is there but is not being measured correctly today.

Example: Black hole mass is now believed to have twice the mass as originally thought. As a black hole has the mass of 7 trillion tons for something the size of a beer can, that is a lot of mass.

A Black hole needs other object(s) near it to be detected. If a black hole has consumed all locally available material as an example it can't be so readily detected.

Something to consider

If, as someone mentioned, dark matter belongs in another universe that interpenetrates our own, then that universe has some very peculiar characteristics. Either it does not possess an electromagnetic quantum field, or if it does, it is trapped in a brane like one of Lisa Randall's models. If these two branes are separated by a small gap, the particles in the other universe would interact in a "low-resolution" way gravitationally with us, not intimately as WIMPS in our univese, but more like distant masses affecting our own. This might lead to observable patterns affecting galsxies. Also, the matter in our universe would act like dark matter in the other, but with only one-fifth the abundance that we observe in ours and exerting a correspondingly smaller role.

Hm, to continue speculating about the "Two Universes", is it possible that the two universes are each others' gravitational branes, but not their own? What kind of insanely linked geometry would that require? We may have to ask Lisa Randall about that! The gap between universes would have to be large enough to provide the explanation for the weakness of gravity, but be small enough for the blobs of matter to influence each other with some spatial resolution.

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