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Causal patch : ウィキペディア英語版 | Causal patch A causal patch is a region of spacetime connected within the relativistic framework of causality (causal light cones). ==Background==
After Leonard Susskind proposed the black hole complementarity conjecture for black holes in quantum gravity, he realized it would also apply to a de Sitter universe with a positive cosmological constant with the cosmological horizon in place of the event horizon. The region within the horizon is the causal patch,〔 〕〔 〕 and it is self-contained. This means we may neglect what happens beyond the cosmological horizon. A consequence of this radical conjecture is that the total number of states of the universe is finite.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Causal patch」の詳細全文を読む
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