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SuperStringboy
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I know string theory is not proved yet.Now Biggest hope is LHC. But theoretically has string theory solved all problems or still there are unsolved problems in physics and what are those?
Which ones and how so?lzkelley said:[...] string theory seems to have solved many [problems in physics].
Sure, in principle if confirmed...lzkelley said:The main one, of course, is unifying all of the fundamental forces of nature.
Mass is in the vibration mode of the string.Additionally, string theory seems to explain why/how things have mass and what that means
We have not much clue of how it is supposed to do that. Another way to say it : once you have chosen (say) the right Calabi-Yau, you get the right SM (can provide reference) but you still need to explain why you chose this Calabi-Yau.It also "explains" why there are 3 groups of fundamental particles... supposedly.
humanino said:Another way to say it : once you have chosen (say) the right Calabi-Yau, you get the right SM (can provide reference) but you still need to explain why you chose this Calabi-Yau.
lzkelley said:The main one, of course, is unifying all of the fundamental forces of nature.
Additionally, string theory seems to explain why/how things have mass and what that means (how they do this, i have no idea!).
It also "explains" why there are 3 groups of fundamental particles... supposedly.
humanino said:Sure, in principle if confirmed...
Mass is in the vibration mode of the string.
We have not much clue of how it is supposed to do that. Another way to say it : once you have chosen (say) the right Calabi-Yau, you get the right SM (can provide reference) but you still need to explain why you chose this Calabi-Yau.
Yes, I think that still holds. But still, once you have chosen the right stacking of D-branes, you can get results remarkably similar to the (SS) standard model structure.George Jones said:The right SM including electroweak symmetry breaking? Zwiebach's book says that electroweak symmetry has yet to worked out in detail, but this might be out of date.
OK, how about that :cosmologist said:string theory is not a falsifaiable theory and this is the problem !
humanino said:OK, how about that :
TeV Strings and Collider Probes of Large Extra Dimensions
Here you go, you have standard-model predictions, string theory predictions, they clearly differ and only await for more precise measurements to be distinguished, available measurements with their error bars being explicitely shown, error bars being clearly reduceable in principle. And before you claim this paper is crackpot theory, please pay attention to the authors, and the fact that it has been published in a respectable peer-reviewed paper (Phys.Rev. D62 (2000) 055012).
It is fascinating that, I myself not being a huge fan of string theory, can get tired of people constantly reporting that string theory is wrong, string theory is not even a theory, string theory is science-fiction...
cosmologist said:string theory is not a falsifaiable theory and this is the problem !
String theory is a theoretical framework that attempts to explain the fundamental nature of particles and their interactions in the universe. It posits that particles are not point-like objects, but are actually tiny vibrating strings. These vibrations determine the properties and behavior of particles, and the theory aims to unify all the laws of physics, including gravity, into one cohesive framework.
No, string theory has not been proven to be true. It is still a theoretical concept and there is currently no experimental evidence to support its validity. However, it is a widely studied and researched theory that has potential to revolutionize our understanding of the universe.
While string theory aims to be a unified theory of all the laws of physics, it is not yet able to fully explain all phenomena in the universe. It has helped to reconcile certain inconsistencies in other theories, but it is still a work in progress and there are many unanswered questions and challenges that need to be addressed.
Yes, there are criticisms of string theory. Some scientists argue that it is not testable or falsifiable, meaning that it cannot be proven or disproven by experimentation. Others argue that it is too complex and mathematically abstract, making it difficult to make meaningful predictions or connections to real-world observations.
If string theory is proven to be true, it could potentially revolutionize our understanding of the universe and lead to new technological advancements. It could also help to bridge the gap between classical physics and quantum mechanics, and provide a deeper understanding of gravity and the nature of space and time. However, these implications are still purely speculative at this point and more research and evidence is needed to support the validity of string theory.