String Theory - String Theory Gravitational Interaction The strength of the gravitational interaction is very small and therefore is irrelevant(and is

String Theory - String Theory Gravitational Interaction The...

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1 String Theory Gravitational Interaction The strength of the gravitational interaction is very small and therefore is irrelevant (and is ignored) for subatomic physics However, at very large energies gravitation becomes comparable to the other forces and cannot be ignored Gravity must be included as a full quantum theory on the same basis as the other interactions
2 Problem Despite massive efforts, nobody has succeeded in constructing a quantum theory of the gravitational interactions – Remember, we have never found a graviton and we really can’t explain what they do or how they do it The Solutionelipsis • 1960s Physicists solved the problem by creating a new theory – String theory This theory claims that the fundamental building blocks of matter are not elementary point particles but tiny strings – Strings are assumed to have a length of less than 10 -35 m
3 Some History The original string theories of the 1960s went largely unnoticed because of the

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