World Solve — A living repository of problems worth solving.

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World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

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We lack a complete quantum theory of gravity.

open Global / Unspecified, Global

General relativity and quantum field theory conflict at extreme densities, such as inside black holes and at the Big Bang. Progress in string theory, loop quantum gravity, and holographic dualities could lead to a consistent framework.

mathematics-logic global-unspecified quantum theory gravity lack complete general relativity field conflict extreme whether know haven possible every philosophy-ethics

WS01804 · Logged by Ian Patel on 2026-07-22T15:14:00Z · Working on: 0

Citation ID: WS01804 Title: We lack a complete quantum theory of gravity. URL: https://www.worldsolve.org/index.php?api=problem&id=1804

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2165 public problems
2165 open challenges
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