Swampland

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Swampland

Recent developments in string theory suggest that the string theory landscape

String theory landscape

The string theory landscape or anthropic landscape refers to the large number of possible false vacuum in string theory. The "landscape" includes so many possible configurations that it is thought by some physicists that the known laws of physics, the Standard Model and General relativity with a positive cosmological constant, occurs in...

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Recent developments in string theory suggest that the string theory landscape

String theory landscape

Field theory (physics)

There are two types of field theory in physics:*Classical field theory, the theory and dynamics of classical fields.*Quantum field theory, the theory of Quantum mechanics fields....
. Some authors (like Cumrun Vafa

Cumrun Vafa

Cumrun Vafa ?????? ??? is an List of Iranian Americans leading string theory from Harvard University where he started as a Harvard Junior Fellow....
) suggest that this is not the case, and that the landscape is surrounded by an even more vast swampland of consistent-looking semiclassical

Semiclassical

In physics, the adjective semiclassical has different precise meanings depending on the context. All these meanings usually refer to some approximation, limit or situation that combines quantum mechanics and classical mechanics aspects in a given problem....
effective field theories, which are actually inconsistent.