Computational capacity of the universe
Computational capacity of the universe
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DOI：
10.1103/physrevlett.88.237901
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发表时间：
2002-06-10
影响因子：
8.6
通讯作者：
Lloyd, S
中科院分区：
文献类型：
--
作者：
Lloyd, S
所有物理系统都注册和处理信息。物理定律决定了物理系统可以注册的信息量（比特数）和系统可以执行的基本逻辑运算的数量（ops数）。宇宙是一个物理系统。计算出宇宙可以记录的信息量和它在历史上可以执行的基本操作的数量。宇宙可以对10（90）比特（包括重力自由度在内的10（120）比特）执行10（120）次操作。
All physical systems register and process information. The laws of physics determine the amount of information that a physical system can register (number of bits) and the number of elementary logic operations that a system can perform (number of ops). The Universe is a physical system. The amount of information that the Universe can register and the number of elementary operations that it can have performed over its history are calculated. The Universe can have performed 10(120) ops on 10(90) bits (10(120) bits including gravitational degrees of freedom).