Timeline for The size of extra dimensions
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
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| Nov 11, 2015 at 16:51 | comment | added | IamZack | The size will always depend on the constraints your model will face. A simple example: If you try to solve the Schrödinger equation for a infinite square well in 1+1 dimensions, you'll see that the radius of the extra dimension is constrained by the energy eingenvalues. | |
| Nov 11, 2015 at 16:35 | answer | added | Neuneck | timeline score: 1 | |
| Nov 11, 2015 at 16:12 | answer | added | anna v | timeline score: 2 | |
| Nov 11, 2015 at 15:33 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
deleted 77 characters in body; edited tags; edited title
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| Nov 11, 2015 at 15:28 | answer | added | John Rennie | timeline score: 0 | |
| Nov 11, 2015 at 15:22 | comment | added | Qmechanic♦ | From a string-theoretic perspective, the number and shape of extra dimensions are addressed in e.g. physics.stackexchange.com/q/10126/2451 , physics.stackexchange.com/q/31882/2451 , physics.stackexchange.com/q/10527/2451 , physics.stackexchange.com/q/4972/2451 and links therein. | |
| Nov 11, 2015 at 14:40 | comment | added | Jiminion | They basically are just adding dimensions to make their math work. As ACM says, if they are large, we'd see them by now. But since they are small, they are just there to make theories and formulae work. | |
| Nov 11, 2015 at 14:37 | comment | added | Les Adieux | @ACuriousMind Not only for String theory. I was talking in general with an example. Supposing we have a theory which requires N dimensions. How could we determine the magnitude of these dimensions? Will they be small like 10^-50 m or will they be large like 10^50 m? Moreover I don't think we could see large dimensions. Think about a virus: it doesn't perceive the bigness o the world, it doesn't "see" our three space dimensions, even if for him are really really large... | |
| Nov 11, 2015 at 14:33 | comment | added | ACuriousMind♦ | The shape of the extra dimensions is not exactly predicted by string theory, but if they were large, we'd have seen them by now. I also don't know what you mean by our perceived dimensions having a "magnitude of centimeters, meters or whatever?". | |
| Nov 11, 2015 at 14:31 | history | asked | Les Adieux | CC BY-SA 3.0 |