From an article in New Scientist:
The mysterious cosmic presence called dark energy, which is accelerating the expansion of the universe, might be lurking in hidden dimensions of space. … To get the same amount of acceleration seen by astronomers, Greene and Levin calculate that the extra dimensions should have a scale of about 0.01 millimeter.
Comments from slashdot:
by Anonymous Coward
They’ve made a toy model with pretend fields in the basic version of braneworld, the only force that reaches out beyond the brane is gravity. The gravitational field alone would not have vibrations with the right properties for Greene and Levin’s theory, so they had to add another field ad hoc and fix its strength to produce the right amount of repulsion.
According to the calculations, however, these vibrations should either possess a ridiculously high energy density – 122 orders of magnitude larger than are observed – or cancel out to exactly zero.
What’s 122 orders of magnitude between friends?
…dark energy has fallen into an interdimensional rift in the fabric of space/time, can we shove the astrophysicists who insist on inventing the unobservable to fix their theories in with them, and get on with fixing whatever the error in the models really is? Please?
There is nothing worse than a scientist who fixes the observation to meet their theory, to paraphrase the illustrious but equally fictional Sherlock Holmes
Funniest title ever
Dark Energy May Lurk In Hidden Dimensions
So.. let me get that straight. We solve the problem of energy we can’t detect and dimensions we can’t prove exist? Simple! We tuck the one into the other and thus explain everything in a single shot. Brilliant!
so…is this how it works?
If you can’t get your theory to fit the facts, then you look for the facts that fit your theory?
New dimensions… as usual
Every time physicist are trapped in a corner, they escape by inventing a new dimension
Star Trek science
Impending doom for the crew? All out of ideas? Engaging story lines dried up years ago?
Make up a new particle!
And the best comment award goes to :)
Einstein’s equations in smiley formalism
You guys maybe a bit too skeptical about Dr. Greene’s latest foray into elegant dimensions. All this has already been predicted by Einstein’s equations written in smiley formalism. But the equations are still for a static telnet universe. I would appreciate if anyone could transform the smiley terms to animated smilies in whatever dimensions.
No wonder string theorist Clifford Johnson writes:
I also must remark that slashdot is a really really scary place. This is the first time I’ve ever gone there.
For doctors of physics Slashdot is a scary place because people who comment there actually think for themselves. If they see professional fraudsters calling themselves physicists and selling religious schmaltz as science as the Media Shaman Doctor Greene does they say so. They don’t have to hide behind a veil of mathematicism and philosophical polemics.
These comments actually prove that Doctors of Philosophy are not fooling at least some of the people. But why is there no traction? As usual independent thinking people remain unorganized while scholasticism is a monster organism. Unless these independent thinking people find a way to come together, have their own social network maybe, they will have no effect on scholastic doctors.
Galileo used the new media to good effect and created a new consumer class. That’s how Galileo got traction. We are about to miss the opportunity to use the new media since the web has been mostly doctored already. Religious bigots selling the same Newtonism practiced in the old brick and mortar schools are now preaching from blogs such as Cosmic Variance. In Cosmic Variance every other post is about God or some such religious propaganda. Slashdot readers are mostly free thinking technologists and hackers who see through the physics scam. There is hope.