You told me once you have read about 80 books on QFT and related subject. Do you not have a better reference on string theory than Brian Greene ?Buckeye said:On Brian Greene's presenation we can see various squiggles that are meant to be a rough picture of what Strings may look like.
Sure, anything is possible. So far the electron is pointlike down to [tex]10^{-18}[/tex] m. In string theory, the electron is not a loop.Is it possible that the electron could be a loop that has some sort of chirality?
That however is already ruled out by experiment. We know the shape of the proton, and it is not a knot.Is it possible that the proton could be in the form of a Boy knot?
humanino said:You told me once you have read about 80 books on QFT and related subject. Do you not have a better reference on string theory than Brian Greene ?Sure, anything is possible. So far the electron is pointlike down to [tex]10^{-18}[/tex] m. In string theory, the electron is not a loop.
That however is already ruled out by experiment. We know the shape of the proton, and it is not a knot.
Buckeye said:Not yet.
How do we know the electron can not be a looped string? Has some experiment eliminated this shape?
Great. Then what is the shape? A Euclidean sphere or an oblate sphere or something else?
humanino said:Please, I told you the electron is pointlike to the best of our G$ equipement. You can claim there is whatever you want behind the mountain where nobody ever went. This is not science however.
I do not just think, I measure. This is what I find out there in Nature...Buckeye said:Just because you think electrons can only be pointlike, does not make it true.
humanino said:I do not just think, I measure. This is what I find out there in Nature...
I don't. I do work with an accelerator however. But it is not a collider.Buckeye said:Sounds like you work at one of the Synchrotrons.
Buckeye said:Seems that Marcus and the String Guys are ignoring this question. Too bad. I would have really liked some professional feedback.
BenTheMan said:Ehhh if you're a student at Ohio State, PM me and stop by my office :)
The question of whether the electron can be a looped string depends on the string theory you live in. Most of my work is in the heterotic string, and in that case the electron IS a looped string.
The proton, as we have tested experimentally, is definitely NOT a ``tied'' string. In fact, as far as I know strings DON'T tie. They can oscillate, but they don't twist.
There is currently no evidence or scientific theory that supports the idea of an electron being a looped string. The prevailing theory is that electrons are fundamental particles with no known substructure.
The looped string theory is a theoretical model that suggests that the fundamental particles of the universe, such as electrons, are actually tiny loops of vibrating strings. This is a controversial theory and is not widely accepted in the scientific community.
If the looped string theory were true, it would have significant implications for our understanding of the behavior of electrons. For example, looped string electrons could potentially have different properties and interactions with other particles compared to traditional electrons. However, as this theory is not widely accepted, it is difficult to say exactly how a looped string electron would behave.
There is currently no experimental evidence that supports the looped string theory. Scientists have not been able to detect or observe any strings or looped structures at the subatomic level. Additionally, the looped string theory has not been able to make any testable predictions that could be verified through experiments.
There are several alternative theories that attempt to explain the fundamental particles of the universe, such as the standard model of particle physics and string theory. These theories have been extensively studied and have been able to make successful predictions about the behavior of subatomic particles. However, none of these theories currently support the idea of an electron being a looped string.