Toward Unification of General Relativity and Quantum Mechanics(One Hundred Years of General Relativity-History, Current Status, and Future Prospects)

Abstract

Unification of general relativity and quantum mechanics has been one of the most outstanding questions in modern physics. In this article, we will review superstring theory, which is the most promissing candidate for the ultimate theory to achive this unification, with focus on recent topics on "quantum entanglement," whose notion was introduced by Einstein, Podolsky, and Rosen.