Which of these is NOT predicted by superstring theories?
A) The universe cannot have a negative curvature.
B) Spacetime may not be entirely smooth.
C) Dark matter may include particles predicted by string theory.
D) The basic theory of the universe, of which string theories are a modification, is general relativity.

Question

Quizplus · Accepted Answer

Superstring theories, which are an extension of the standard model of particle physics and attempt to reconcile quantum mechanics and general relativity, do not specifically predict that the universe cannot have a negative curvature. They are more focused on the nature of spacetime, particles, and forces at the quantum level, rather than the large-scale structure of the universe such as its curvature.

Which of These Is NOT Predicted by Superstring Theories