Category: Group 2 — Proposed Solutions
The serious theoretical attempts to resolve the incompatibility
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Ⅵ: Asymptotic Safety
Every attempt to quantise gravity using standard methods produces infinities that cannot be controlled. String theory and loop quantum gravity solve this by introducing something new. Asymptotic safety asks a different question: what if nothing new is needed? What if gravity, at the highest energies, simply stops changing?
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Ⅴ: String Theory
String theory replaces point particles with one-dimensional strings, providing a description for gravity. This article examines the theory’s development, its concrete results, and the landscape problem it has not resolved.
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Ⅳ: Loop Quantum Gravity
Loop quantum gravity attempts to unify general relativity and quantum mechanics by quantising spacetime. The theory predicts that space is fundamentally discrete, with quantised units of area and volume, and offers possible resolutions to the early universe.