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fxdung
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I do not know why can they classify 5 theories of superstring.Is that correct that they base on different symmetries?
The fundamental premise of string theory is that all particles in the universe are made up of tiny, vibrating strings instead of being point-like objects.
String theory proposes that gravity is not a force between masses, but rather a byproduct of the curvature of space and time caused by the mass of the strings. This is known as the theory of general relativity.
Yes, there are several different types of string theories, including bosonic string theory, superstring theory, and M-theory. Each type has its own unique properties and equations.
Scientists classify string theories based on the number of dimensions they require and the type of particles they predict. The most widely accepted version of string theory is known as superstring theory, which requires 10 dimensions.
Currently, there is no direct experimental evidence to support string theory. However, many physicists believe that it has the potential to unify all the fundamental forces of nature and provide a more complete understanding of the universe.