V2EX classical simulation

Classical Simulation

Definition / 定义

classical simulation:指用“经典(非量子)”计算机或经典物理/数学模型来模拟某个系统的行为,常见于计算物理、统计力学与量子信息领域。尤其在量子计算语境中,常指用经典算法去模拟量子系统(通常会遇到计算成本随规模急剧上升的问题)。该短语也可在更广义上表示“非量子方法的仿真”。

Pronunciation / 发音

/klskl smjlen/

Examples / 例句

Classical simulation can be used to test the robot’s control system before real trials.
经典仿真可以在真实测试前用来检验机器人的控制系统。

For large quantum systems, classical simulation often becomes infeasible because the required memory grows exponentially.
对于大型量子系统,经典模拟往往会变得不可行,因为所需内存会呈指数增长。

Etymology / 词源

classical 源自拉丁语 classicus,原意与“等级、典范”相关,后来引申为“传统的、规范的”,在科学语境里常指“经典物理(相对于量子/相对论等现代理论)”。
simulation 源自拉丁语 simulare(模仿、假装)经法语进入英语,现代多指“用模型再现系统行为”。合在一起,classical simulation 就是“用经典模型/经典计算方式进行模拟”。

Related Words / 相关词

Literary Works / 文学作品

  • Michael A. Nielsen & Isaac L. Chuang,《Quantum Computation and Quantum Information》:讨论量子系统与其经典可模拟性(classical simulation)等主题。
  • Scott Aaronson,《Quantum Computing Since Democritus》:以通俗方式谈到经典计算对量子过程的模拟边界。
  • Richard P. Feynman,“Simulating Physics with Computers”(论文):提出用计算机模拟物理并讨论经典模拟量子系统的困难。
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