3min chapter

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas cover image

245 | Solo: The Crisis in Physics

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

CHAPTER

The Challenges of Quantum Gravity

With string theory, there was the first well posed theory that could unify in principle gravity with all the other forces. The real challenge is that gravity seems to be a different kind of theory. There's plenty of reasons to think that gravity is in some sense fundamentally non-local. But now we have much more subtle, challenging features of quantum gravity that we would like to explain.

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