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Simple theory may explain mysterious dark matter, physicists say
Science Recorder ^ | 6/11/13 | James Fluere

Posted on 06/11/2013 4:12:59 PM PDT by LibWhacker

One physicist says he likes this theory because of “its simplicity, uniqueness and the fact that it can be tested.”

Theoretical physicists at Vanderbilt University contend that a simply theory may explain mysterious dark matter. They propose that most of the matter in the universe may be constructed of particles that have an abnormal, donut-shaped electromagnetic field known as an anapole.

According to a news release from Vanderbilt University, Professor Robert Scherrer and post-doctoral fellow Chiu Man Ho carried out an in-depth analysis to determine the validity of this theory. Scherrer points out that he likes this theory because of “its simplicity, uniqueness and the fact that it can be tested.”

Space.com notes that approximately 80 percent of all the matter in the universe is made up of dark matter. Dark matter is material that physicists cannot directly observe. Why is this? Because dark matter does not emit light or energy. Scherrer and Ho suggest that dark matter may be constructed of a type of basic particle known as the Majorana fermion. Though the particle’s existence was predicted in the 1930′s, it has doggedly resisted detection.

While this theory has been previously put forth, Scherrer and Ho have shown that these particles are uniquely adapted to have an anapole. This field gives the Majorana particles properties that vary from those of particles that have the more common fields possessing two poles and illustrates why they are so hard to detect.

According to Scherrer, a lot of models for dark matter expect that it interacts through exotic forces that we do not come across on a daily basis. However, anapole dark matter utilizes ordinary electromagnetism like the force that makes magnets stick to your refrigerator. Scherrer and Ho also point out that the model makes predictions about the rate at which anapole dark matter should reveal itself in the dark matter detectors that are hidden underground. According to these predictions, the existence of anapole dark matter will soon be proven or ruled out by these experiments.

Ever since Italian physicist Ettore Majorana created a variation of Paul Dirac’s formulation that predicts the existence of an electrically neutral fermion, physicists have been looking for Majorana fermions. Though the main candidate has been the neutrino, scientists have not yet been able to figure out the basic nature of this particle.

Scientists believe that dark matter also explains why stars far from the center of galaxies are traveling at much higher velocities than can be reasoned by the amount of visible matter that the galaxies have. Scientists believe that these galaxies contain a sizable amount of undetectable dark matter. This dark matter cannot be spotted in telescopes because it does not interface very strongly with light and other electromagnetic radiation.

However, several physicists have studied dark matter particles that don’t contain electrical charges, but possess electric or magnetic dipoles. Unfortunately, even these more complex models are ruled out for Majorana particles, which is why Ho and Scherrer performed an in-depth analysis of dark matter with an anapole magnetic moment.

According to Ho, “fundamental symmetries of nature” prevent Majorana fermions from obtaining any electromagnetic properties except the anapole.

The physicists contend that particles with anapole fields must be moving before they interact and the quicker they move the better the interaction. Therefore, anapole particles were probably a lot more interactive during the early days of the universe and would likely have become less and less interactive over time.

The anapole dark matter particles proposed by Ho and Scherrer would demolish in the early universe, and the left-over particles from the process would create the dark matter around today. Because anapole interaction relies on how fast the particles move, these particles would have evaded detection so far.

The study’s findings are described in greater detail in the journal Physics Letters B.


TOPICS: Astronomy; Science
KEYWORDS: anapole; dark; darkmatter; fermion; matter; simple; stringtheory; theory

1 posted on 06/11/2013 4:12:59 PM PDT by LibWhacker
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To: LibWhacker

Very interesting, thanks.


2 posted on 06/11/2013 4:17:48 PM PDT by gorush (History repeats itself because human nature is static)
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To: neverdem

A bit above my pay grade, but I do have a daughter who is a physicist and I look forward to read what she says.


3 posted on 06/11/2013 4:18:52 PM PDT by Pharmboy (Democrats lie because they must.)
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To: LibWhacker
TTIWWOP:
http://blogs.voanews.com/science-world/tag/anapole/

4 posted on 06/11/2013 4:53:44 PM PDT by BitWielder1 (Corporate Profits are better than Government Waste)
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To: LibWhacker

I prefer dark matter in poultry. Chickens and turkeys have both dark and light matter, while ducks have only dark matter. I really like roast duck with plum sauce. Can’t beat that good ol’ dark matter. Can’t understand why those dweebs don’t quit screwing around with it under a microscope and just EAT it......with the proper side dishes, of course.


5 posted on 06/11/2013 5:05:37 PM PDT by Tucker39
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To: Tucker39

6 posted on 06/11/2013 5:13:55 PM PDT by JoeProBono (Mille vocibus imago valet;-{)
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To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; Beowulf; Bones75; BroJoeK; ...

Thanks LibWhacker.
Theoretical physicists at Vanderbilt University... propose that most of the matter in the universe may be constructed of particles that have an abnormal, donut-shaped electromagnetic field known as an anapole.
It's a Krispy Kreme universe.

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7 posted on 06/11/2013 5:25:11 PM PDT by SunkenCiv (McCain or Romney would have been worse, if you're a dumb ass.)
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To: LibWhacker

It’s the firmament? Nah, too unscientific.


8 posted on 06/11/2013 5:28:28 PM PDT by RegulatorCountry
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To: LibWhacker

Finally, we need more of these theories that we can actually TEST..


9 posted on 06/11/2013 5:40:19 PM PDT by Paradox (Unexpected things coming for the next few years.)
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To: LibWhacker

So... this guy’s saying that there’s dark matter around your anapole?


10 posted on 06/11/2013 5:44:22 PM PDT by Jack Hammer (American)
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To: LibWhacker

That’s what I told my physics professor when he asked me why I hadn’t done my homework.

“I used dark matter ink. You just can’t see it.”

I could see the red ink he used to put an “F” on my paper.


11 posted on 06/11/2013 6:00:52 PM PDT by blueunicorn6 ("A crack shot and a good dancer")
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To: Pharmboy

What were you saying?

12 posted on 06/11/2013 6:06:18 PM PDT by ThomasThomas (A bad hair day is not a mental issue, or is it?)
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To: SunkenCiv

That’s a great periodic table you’ve got there.


13 posted on 06/11/2013 6:27:22 PM PDT by Rocky (Obama is pure evil.)
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To: LibWhacker
They propose that most of the matter in the universe may be constructed of particles that have an abnormal, donut-shaped electromagnetic field known as an anapole.

Since most of the matter is dark matter, how can we say that their construction is "abnormal"?

14 posted on 06/11/2013 6:30:35 PM PDT by Rocky (Obama is pure evil.)
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To: LibWhacker

After reading their guesses, I personally lean towards “Pixie Dust”. It fulfills are the attributes and requirements stated in the speculation of the article. Another option would be that it is output from the E-CAT cold fusion reactor.


15 posted on 06/11/2013 6:58:23 PM PDT by RetiredTexasVet (An ignorant electorate kept Slow Joe from his true calling as a circus clown or union thug.)
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To: ThomasThomas

That is GEEENYUS!

We are not worthy.


16 posted on 06/11/2013 7:26:30 PM PDT by West Texas Chuck (Alcohol, Tobacco and Firearms. That should be a convenience store, not a Government Agency.)
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To: Rocky

Abnormal??? That is Abbie Normal to you.


17 posted on 06/11/2013 7:32:28 PM PDT by mfish13 (ELECTIONS HAVE CONSEQUENCES!!!!)
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To: ThomasThomas

An interesting sweet torus that Homie is eating...


18 posted on 06/12/2013 6:35:45 AM PDT by Pharmboy (Democrats lie because they must.)
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To: Jack Hammer

***snicker***


19 posted on 06/12/2013 8:57:36 AM PDT by LibWhacker
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To: Rocky

Exactly, you caught that, too. Too much writing by the so-called professionals is obviously done with brain disconnected from fingers.


20 posted on 06/12/2013 9:01:15 AM PDT by LibWhacker
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To: LibWhacker
Theoretical physicists at Vanderbilt University contend that a simply theory may explain mysterious dark matter.

My theory is that they forgot to remove the lens cap from their telescope.

21 posted on 06/12/2013 9:03:47 AM PDT by GreenHornet
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To: BitWielder1

Which proves yet again that, once you’ve seen one field, you definitely HAVE NOT seen them all.


22 posted on 06/12/2013 9:28:24 AM PDT by LibWhacker
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