爱因斯坦还未完成的梦想

yuefei

爱因斯坦临去世之前有个还未完成的梦想，就是“统一场论”，是有关所有力的理论，这一理论试图赋予和重力一样属于基本的电磁力空间几何学的特性，大家对这个有什么意见？

fgh

现在勉强可以把3种力统一了，唯有gravitational force。。。
因为太弱了。。。
对吗？有点忘记了。。。

yuefei

那3种力是什么力?

telorod

原帖由 yuefei 于 16-4-2008 11:40 PM 发表
那3种力是什么力?

引力，电磁力，强核力，弱核力
http://en.wikipedia.org/wiki/Forces#Fundamental_models

新人王伏羲

把广义相对论与量子力学合起来就可以了。可是目前还做不到。。。
弦论好像很接近统一场论但是没有实验可证实弦论正确性。。。

llo_ol

廣義相對論和量子力學相互違背嗎？

hidden

There are four forces in the universe, as physicists currently know: electromagnetism, weak force, strong force, gravitational force. Someone (not sure who) had already formulated the Standard Model, which pretty much describes the origin of the first three forces. It says that these three forces are one and the same in the first 10^-18 or less second after the Big Bang, IF the theory is correct. However, the Standard Model is already challenged by CP violation, dark energy, etc. So it's not a complete theory. Furthermore, gravitational force is not incorporated.  So, no Grand Unified Theory for you just yet.

中庸

neutrino mass also make a problem to standard model.

hidden

原帖由 中庸 于 28-4-2008 06:16 PM 发表 neutrino mass also make a problem to standard model.

not sure about that, but I don't believe so...

中庸

it depend on you to believe or not....

hidden

原帖由 中庸 于 29-4-2008 02:53 PM 发表
it depend on you to believe or not....

hmm... since neutrinos (all three of them) are included in the Standard Model, one would say these properties (i.e. their masses) are compatible with the theory, because I think (personal opinion really!) Standard Model is still a valid theorem today. But, I just checked on Wikipedia, http://en.wikipedia.org/wiki/Neutrino, like you said, Standard Model proposes zero-mass neutrinos. So you're right! And I was surprise to find out that the mass of neutrino was only discovered in 1999. I thought it was discovered earlier. Anyway, this is going too deep for me. And thanks for the correction.