Skip to comments.Simple theory may explain mysterious dark matter, physicists say
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 particles 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 Diracs 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 dont 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 studys findings are described in greater detail in the journal Physics Letters B.
Very interesting, thanks.
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.
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.
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.
It’s the firmament? Nah, too unscientific.
Finally, we need more of these theories that we can actually TEST..
So... this guy’s saying that there’s dark matter around your anapole?
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.
What were you saying?
That’s a great periodic table you’ve got there.
Since most of the matter is dark matter, how can we say that their construction is "abnormal"?
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.
That is GEEENYUS!
We are not worthy.
Abnormal??? That is Abbie Normal to you.
An interesting sweet torus that Homie is eating...
Exactly, you caught that, too. Too much writing by the so-called professionals is obviously done with brain disconnected from fingers.
My theory is that they forgot to remove the lens cap from their telescope.
Which proves yet again that, once you’ve seen one field, you definitely HAVE NOT seen them all.