What Is Quantum Gravity? [Video]

Why quantum physicists think eliminating a dimension of space might be a good idea
George Musser, Quantum Gravity, Video

Scientific American

The force of gravity is the lost sheep of physics, and physicists have struggled for the best part of a century to unite it with the rest of their flock of particles and forces. An unexpectedly fruitful approach has been to think of how gravity might operate if space were only two-dimensional. By simplifying the problem, they hope to get to the heart of what gravity is and then apply the lessons to our higher-dimensional space.


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