Tagged Questions
2
votes
1answer
929 views
Unified field theory in layman's terms
I watched some videos on the unified field theory, specifically interviews with Michio Kaku and John Hagelin, and want to learn a bit more about it. I looked up the theory of everything, string theory ...
3
votes
2answers
529 views
Does string theory and preons exclude each other?
Does string theory contradict the theory of preons, especially the Harari-Shupe one?
2
votes
2answers
199 views
Does the existence of dualities imply a more fundamental structure?
I was wondering if the existence of some kind of duality in physics always implies the existence of some underlying more fundamental structure/concept?
Let me give a few example from history:
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7
votes
7answers
1k views
Why are extra dimensions necessary?
Some theories have more than 4 dimensions of spacetime. But we only observe 4 spacetime dimensions in the real world, cf. e.g. this Phys.SE post.
Why are the theories (e.g. string theory) that ...
