Creating New Matter: Primordial Soup @ CERN 80
hobgadling writes "According to ABC News, physicists at CERN in Geneva have recreated a "quark-gluon plasma", also known as the primordial soup, the state of the universe right after the big bang. The article here says that more experiments will have to be done at Brookhaven National Labs to prove this. " Brookhaven will be starting research in this area this summer - with much more powerful instrumentation.
Re:That's freaky (Score:1)
Make Seven
Official Page (Score:3)
Please go and check the official web pages: A New State of Matter [www.cern.ch]
Re: primordial soup (Score:1)
Make Seven
Re: primordial soup (Score:1)
Dense? (Score:1)
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Rusty science??? (Score:1)
Please correct me, and I know you will if I am wrong, but isn't Primordial soup a generic term for the beginnings of life, is the simple amenio-acids that were formed in the past.
This experiment is about Primordial matter, discovering the origins of matter rather than 'life'
Primordial Soup?? is this an overloaded operator? (Score:1)
Big bang? (Score:2)
Re:Dense? (Score:1)
Re:Big bang? (Score:3)
That way, the further you go back in time, the smaller the Universe gets, but it never reaches a single point. As t approaches 0, the gradient approaches 0.
The practical upshot is that, whilst the theory still says there was a Big Bang, there is no definable -point- for time 0.
Another reason the SSC shouldn't have died. (Score:1)
God forbid we'd put any real money into scientific research when there's so many third world countries needing handouts so their citizens can buy more American cigarettes....so many people who've gone down on the President that need investigating....so many Windows licenses to buy!!!!
Put the budget surplus back into research. Maybe then we wouldn't lose any more Mars probes, blow up any more Delta rockets, and in a few years we'll all be driving Hover-cars with Mr. Fusions(tm) in the back.
Dammit!
Of course if this is what they think it is, this is damn cool. Maybe we can actually figure out a way to reliably produce and detect neutrinos next?
Anyone have any links re: the big neutrino detector tanks set up last year?
Re:Primordial Soup?? is this an overloaded operato (Score:1)
Re:CERN... (Score:1)
netops@cern.ch
???
Re:Another reason the SSC shouldn't have died. (Score:2)
Fermilab's MINOS [anl.gov];
CERN's NGS [www.cern.ch];
more in general, a page on Neutrino oscillation [anl.gov]
Imaginary time and boundary conditions (Score:1)
I thought I'd heard that the latest thinking of great minds (such as Stephen Hawking's) was that the big bang theory was flawed, and that it probably didn't happen. True, or has somebody been pulling my leg?
What Hawking said was that since in the equations of relativity (dt/ds)^2 has a negative sign whereas the three spacial differencials - (dx/ds)^2 etc. - have a positive sign time appears in space-time interval equations as -ict, where i is the square root of -1, an imaginary number. His postulate was that we should accept this at face value rather than writing it off as just an artifact of the equations.
This lead him to the idea of the universe being a 4-D hypersphere which is unbounded but finite, so that if you went far enough foward in time you would return to where you started. So there would be a cyclical evolution of the universe - a Big Bang type event followed by expansion, then contraction followed by a Big Crunch event, and so on and on. The idea isn't really that popular though.
Quark entanglement (Score:1)
Is primordial soup actually another state of matter like Gas, solid, liquid, and plasma? or is it just a form of plasma or something?
Whereas the four states you mention are all different states of regular matter - the quark-gluon plasma is where the actual nucleons that form the nuclei of atoms have broken down. Normally each nucleon consists of three quarks (udd for a neutron and uud for a proton IIRC) bound together by combinations of the eight types of gluon, which are the force carriers of the strong nuclear force.
Normally the gluons bind the quarks together so that you can only see them in combinations of either three quarks (the baryons) or a quark and an anti-quark (the mesons). As you add more energy to this system the force between the quarks actually increases (unlike gravity or electromagnetism) until you reach a point where you have pumped enough energy into the system to create an entirely new set of quarks, also bound. This property is called quark entanglement and is why so far we have never seen a free quark.
However at high enough energies quark entanglement breaks down and the quarks and gluons become free from each other, much in the same way that at high energies electrons and nuclei become free and form a plasma. This is why it is called a quark-gluon plasma.
Re:Dense? (Score:1)
Primordial soup, et al. (Score:3)
But, on the off-chance it -is- soup, I'll have a cup, with some cheese and a slice of bread, please.
Quark soup is interesting, as it allows the formation of some -really- exotic matter. Most matter in this Universe consists of protons, neutrons and electrons. However, protons and neutrons are comprised of triplets of quarks.
This is where it gets interesting. Condense quark soup, and you can get another stable construct, made of -TWO- quarks, rather than three. Such constructs would be meta-stable, but kept under the right conditions could give you an entirely different periodic table. (You could form elements that had radically different natures. There'd be no neutrons, for example, so no isotopes. A nucleus would be kept stable with a mix of positively and negatively-charged particles, with the net charge being something really bizare.)
Re:Imaginary time and boundary conditions (Score:1)
Of course didn't GR also say that in order to end up back where you started it would take an infinite amount of time? (All mathematically speaking of course)
Of course mathematically speaking it's possible for particles with imaginary mass to travel faster than light...*shrug* So if we can write off "imaginary time" at face value, being something "real", we should also be able to write off "imaginary mass" as being something that "is"?
Show me the tachyons!!!
more about RHIC (Score:2)
I got to see a presentation by one of the lead physicists working on RHIC [bnl.gov] (Relativistic Heavy Ion Colider) 3 or 4 years ago. Follows is as much as I can remember about it and quark gluon plasma (disclaimer: I have been out of the physics community for 2 years now, so some of my quantum may be rusty)
In order to create quark gluon plasma you need a lot of energy. Most colliders work on the principle of getting light ions (like stripped helium atoms) and making them go really fast. RHIC decided that what would be more useful is to take really heavy ions (E = mc^2) and collide them. The will be using stripped gold atoms. (When I say stripped, I mean they got every electron off of them, all 79 of them) The have the two streams going in oppisite directions till they get up to speed, then ram them into each other.
I'm going to butcher anything else I say about this, so go check out this cern page [www.cern.ch] for more info on quark gluon plasma. It has a really cool animation on their main page showing the collision.
Patents applied for ? (Score:1)
Re:Imaginary time and boundary conditions (Score:1)
Doh.
Re:Imaginary time and boundary conditions (Score:1)
Doesn't GR basically say that the universe has a finite "radius" so-to-speak and that you'll end up back where you started if you could travel long enough. Looks like Hawking's carried that over into the time-dimension as well?
It depends on what model of the universe you're looking at. The simplest models of the universe with a Big Bang are the FRW (Friedmann-Roberts-Walker I think) models which are based on Friedmann's original proposal in the 1910s IIRC. They were denounced by Einstein until Hubble made his discovery. In those models there is certainly a finite radius, as there will also be in any model with a singularity in it, since if the universe began at some point then it would take an infinite time to expand to infinite size.
Of course, there are some more exotic models of the universe which can be formulated using general relativity. The NUT universe (named after the initials of its creators) involves a universe where if you travel 360 degrees around the universe once you end up in a totally different "slice" of the universe instead! I'm not sure of how wou'd work out distance and time in that universe :)
Of course mathematically speaking it's possible for particles with imaginary mass to travel faster than light...*shrug* So if we can write off "imaginary time" at face value, being something "real", we should also be able to write off "imaginary mass" as being something that "is"?
Show me the tachyons!!!
As for tachyons, there isn't a problem with them in relativity AFAIK. A tachyon with zero energy however (and remember that nature always tends towards the lowest energy) is travelling at infinite velocity, which means it occupies every point in space-time simultaneously (if that word has any real meaning in this context), probably making experimental verification somewhat tricky. Anyway they are probably ruled out in the context of superstring theory, which avoids the tachyons that other theories have demanded.
Something More... (Score:1)
http://news.bbc.co.uk/hi/english/sci/tech/newsi
Re: primordial soup (Score:1)
quark-gluon plasma (Score:2)
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Re:Primordial soup, et al. (Score:1)
This is where it gets interesting. Condense quark soup, and you can get another stable construct, made of -TWO- quarks, rather than three. Such constructs would be meta-stable, but kept under the right conditions could give you an entirely different periodic table. (You could form elements that had radically different natures. There'd be no neutrons, for example, so no isotopes. A nucleus would be kept stable with a mix of positively and negatively-charged particles, with the net charge being something really bizare.)
How would you construct this type of matter. Certaintly at the conditions required to form the quagma (quark-gluon plasma) you could construct such a material, but at lower energies the strong force comes back into play and hence we are looking at quatum chromodynamical effects again. To acheive a colour neutral particle with two quarks we need a quark and an anti-quark, which is a meson. Is this what you mean, because we've been able to produce those for a while now.
I think maybe you had something else in mind, but I wouldn't mind some clarification. Cheers.
Re:quark-gluon plasma (Score:1)
Store in a cold (10K), dark, highly compressed place.
Surely shouldn't that be store in a ridiculously hot (10^9K), bright space?
Re:Dense? (Score:1)
>the center of Earths gravity and suck our molten
>core dry.
Well, actually, if there really was a black hole, 'down' would immediately become towards it, so it would be more like the Earth falling into the hole than vice versa. What a pleasant thought - everything and everyone being united in one spot. That's togetherness for you.
To see or not to see... (Score:1)
The article seems to be suggesting that you can actually see/detect the existance of these quark things... maybe i'm not reading this thoroughly enough but they don't seem to be mentioning how they actually detected these quark things. All it says is that, in so many words, you blast the crap outta sth to heat it up big time and little quarks separate from the atoms...
I'm quite keen to know how they detected these little quarks spraying off
Re:Imaginary time and boundary conditions (Score:2)
Anyway, hasn't Hawking pretty much abandoned the "bounce" idea? I seem to remember him not treating it very seriously in recent editions of A Brief History of Time.
Oyster Crackers (Score:1)
Re:Patents applied for ? (Score:1)
Re:Dense? (Score:1)
If they produce sufficient quantities of this matter, you can create mini blackholes.
Well, if you have a sufficient quantity of Hydrogen, you can get a black hole, too. I believe that in both of these cases, "sufficient quantity" is the stumbling block.
Is it just me? (Score:1)
I mean, the man has problems with some of the more interesting interpretations of QT and all.
also (is it just me?) but what is this bs about the big bang.
As a theory it is useless, it answers nothing. "So the universe started with a big bang? What came before that?"
Call me naive, but the universe had no beginning and has no end, it is infinite in all directions and contains an infinite amount of 'dimensions' (current theory has 11 I am told). To believe anything else is futile
Croutons (Score:1)
Presumably you could have fun naming any bigger particles that may exist in the soup, how about croutons and noodleons.
EZ
-'Press Ctrl-Alt-Del to log in..'
Re:Oyster Crackers (Score:1)
;-P
What about Strange Matter?? (Score:1)
dangerous science (Score:1)
Whilst the discoveries they did there are, IMHO, really great and important regarding our knowledge of Life, The Universe and Everything, some factors are hidden for the benefits of Big Science (tm).
The CERN uses a Large Electron Collider which is 27 kilometers in circumference. The nasty fact is the leukemia rate in the (populated) areas above and around the particle accelerator is no less than 19 times higher than in the rest of the region.
Why did they build the 3 accelerators/colliders (two circlar ones and one linear) in a very populated area? Gee, that's just like having a nuclear plant downtown... I think that something our dear big brains should think about before "ordering" the next super particle accelerator.
Does anybody have some kind of information regarding other big accelerators located in dense population areas and leukemia/cancer rates? Usually, this kind of info is angrily kept secret by the authorities, but who knows...
Max
Re:To see or not to see... (Score:1)
Generally, they look at the tracks left behind in the detector, which is a complicated 5-stage affair which I looked at in a lot of detail some years ago and then promptly forgot :) Since the detector exerts a very powerful magnetic field (approx 1 Tesla) the particles resulting from the collision travel in a curved path with the curvature showing the amount of charge and the direction it's curving in showing the sign of the charge. The other layers all have varying properties so that certain types of particle are stopped at certain points so that they can tell some of the properties of the debris.
Once they know all this information, they can compare it with the properites of quarks they have already worked out from lower energy collision experiments over the last 20 years or so. If they match, it's a reasonable assumption that they've found quarks.
Re:To see or not to see... (Score:1)
That's the fun part -- lots of house-sized detectors! The quark-gluon plasma expands and cools (actually "hadronizes", collapses back into more ordinary particles) long before they are detected. This means that you need to analyze the particles that come out of the explosion and determine from their properties whether they were created in an ordinary collision or whether a QGP was formed.
As far as the actual detectors go, there are a variety of options -- from scintillation detectors that detect tiny flashes of light when a particle travels through a plastic paddle, to Cerenkov detectors that detect rings of light that form when a particle travels faster than the speed of light in the detector's medium, to time-projection chambers that use the particles' ability to ionize gas to create a 3D "CCD image" of the trajectories. Each detector type has its own advantages and disadvantages, and in the experiments at CERN and RHIC a variety of detectors are wrapped around the collision points. Check out NA49 [na49info.cern.ch] and PHENIX [bnl.gov] for two experiments that I've worked on in the past few years (although I'm a software engineer now).
Re:dangerous science (Score:1)
1) In a cirkular accelerator all the synchotron radiadion goes off radially outwards - since the collider is built underground no one is affected above or on the inside of the ring.
2) The kind of leukemia statistics you mention is most certainly flawed/biased and is worthless unless you quote the uncertainties with it. I belive we have heard a lot about this kind of "research" claiming that everything from cellphones to electrical systems cause cancer - if they alle were true humanity hadn't survived the last 100 years
the reason they build the next accelerators on the same spot is, that they have the tunnels allready.
btw: The new hadron collider will cause less radiation than a electron collider does because of the much higher mass of the hadrons.
Jonas
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Re:Dense? (Score:1)
Re:Imaginary time and boundary conditions (Score:1)
Re:quark-gluon plasma (Score:1)
Jazilla.org - the Java Mozilla [sourceforge.net]
Re:dangerous science (Score:1)
Brookhaven National Laboratory [bnl.gov] (site of the RHIC [bnl.gov]).
IIRC these were possibly connected to leakage of tritium and various nasty chemicals into the ground. There was speculation that this led to contamination of the local water supplies.
I don't recall any allegations of this being directly related to the lab's research, just to poor handling of hazardous material. The scandal led to the replacement of the lab's management team.
See http://www.oer.dir.bnl.gov/ [bnl.gov] for more information on their cleanup efforts.
Re:quark-gluon plasma (Score:1)
Pity, happyfunball.com seems to be offline.
Re:Primordial soup, et al. (Score:2)
There are plenty of things made of paired quarks, they just don't last for long. (No relativity jokes please...oops!). For example: down and anti-up combine to form the pi-negative meson.
(If my naming is archane, I apologize. This is not my forte. I'm stuck in Maxwellian times.
Also, there's more than one periodic table. The one to which is referred in jd's post is the one of elements. There's also the one of nuclides. Changes in the nucleic structure probably wouldn't change much on the elemental level, at least no much more than isotopic nuclei do. What's interesting is what you can do besides atomic chemistry. Nuclear stability is hardly dependent on electric charge, it's not strong enough.
(Hmm... Some might argue than protons and neutrons are not comprised of triplets of quarks, but that they are particular triplets; proton = uud, neutron = udd.)
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Re:Dense? (Score:2)
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Primordial disappearing ink (Score:2)
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Re:Primordial soup, et al. (Score:2)
The question is, will Campbells be selling cans of condensed quark soup now? I'd just love some Chunky Strange right about now...
Re:Dense? (Score:1)
Re:dangerous science (Score:1)
Re:Is it just me? (Score:1)
Of course the universe has an end, and thanks to Hubble (and the space telescope named in his honour) we've seen it! Current theory dictates that the universe is expanding at an ever increasing rate - the "dark matter" that makes up at least 90% of the mass of the universe doesn't have enough gravity to hold the universe together, so in about 10 billion years (according to current theory) the "light matter" in the universe will be so much dispersed among the dark matter as to be virtually invisible. No light, no heat.
Re:Another reason the SSC shouldn't have died. (Score:1)
Quark-gluon plasmas are created in regimes which are both high temperature and quark rich, like the environments produced at SPS (CERN) and RHIC (Brookhaven). High temperature environments are produced wherever you put enough energy into a system. The SSC would have qualified for a high temperature environment. However, there just aren't enough quarks in two protons (6) to get a high quark environment. The SPS experiment smashed lead onto lead to get more than 1200 quarks into play. This was apparently enough quarks to get a bulk effect like a plasma to sustain for a short time.
--The Yendi
Science by Press Release (Score:1)
I suspect that there is enormous political and financial pressure on CERN to make some sort of public announcement to pacify European funding agencies; at least I hope that's the case. Otherwise, why bother with science? Just call a press conference and spin the evidence to the journalists that show.
Re:Is it just me? (Score:1)
I am not challenging your point as I have never met the man?? From where are you coming from with this. I wish you have of elaborated your point I am quite interested in what others outside the "orthodoxy" feel about Hawking...
"So the universe started with a big bang? What came before that?"
If the universe started with a singularity it is almost impossible (according to what I can remember from 1st year physics) to determine anything (please correct me if I am wrong anybody I always am keen to be corrected and therefore learn more...)
Science can only work on quantifiable data and singularities fall into the unquantifiable category I do believe. My Proffessor told me it was the job of philosophy and religion to give us these details because if you can't measure it or quantify it or falsify your findings how can it possibly be called "SCIENCE". Therefore I think your point is alittle moot.
Re: Is it just me, no it's me too..... (Score:1)
I am not challenging your point as I have never met the man?? From where are you coming from with this. I wish you have of elaborated your point I am quite interested in what others outside the "orthodoxy" feel about Hawking...
"So the universe started with a big bang? What came before that?"
If the universe started with a singularity it is almost impossible (according to what I can remember from 1st year physics) to determine anything (please correct me if I am wrong anybody I always am keen to be corrected and therefore learn more...)
Science can only work on quantifiable data and singularities fall into the unquantifiable category I do believe. My Proffessor told me it was the job of philosophy and religion to give us these details because if you can't measure it or quantify it or falsify your findings how can it possibly be called "SCIENCE". Therefore I think your point is alittle moot.
Re:Science by Press Release (Score:1)
Plus did anyone actually read the article it even stated there:
"In scientificspeak," Zajc says, "I think they've exceeded the bounds of the evidence by a considerable margin." "I believe they have broad hints for unusual properties in the matter they've created," he adds, "Not everything you don't understand is a discovery."
I agree therefore that the peer-review system would be the proper way for scientific discoveries to be vetted. It does sound as if your theory on funding is correct. If other physicists are a bit shaky on taking the evidence at face value perhaps their only guarantee of funding was the PRESS.
Re:quark-gluon plasma (Score:1)
Errm, really? Sorry, I don't get your point.
Re:dangerous science (Score:1)
But this doesn't change my statement, that any radiation from the accelerator will end up in the surrounding earth.
Jonas
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Re:quark-gluon plasma (Score:1)
Function: adjective
Etymology: William Thomson, Lord Kelvin
Date: 1908
: relating to, conforming to, or having a thermometric scale on which the unit of measurement equals the Celsius degree and
according to which absolute zero is 0 K, the equivalent of -273.15C
Jazilla.org - the Java Mozilla [sourceforge.net]
But the trademark? (Score:1)