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The usefulness of uselessness

机译:无用的有用性

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摘要

A game for three or more players called 'guess your neighbour's input' reveals common ground between classical and quantum physics -at the expense of more exotic, super-quantum, theories of nature.rnWhy play games that quantum dice don't help you win? Writing in Physical Review Letters, Almeida et al. provide a surprising twist on the foundations of quantum mechanics and tell us why we should be at least interested in this question. When John Bell came up with the first of his eponymous inequalities, it was to show that quantum mechanics is not just incompatible with classical physics but that it violates its deep conceptual tenets. Now, Almeida et al. show that there are 'useless' Bell inequalities that quantum mechanics cannot violate. Instead, these inequalities can provide insights into what distinguishes quantum mechanics from even stranger theories of nature.
机译:一个由三名或三名以上玩家组成的游戏,“猜测邻居的输入”揭示了经典物理学与量子物理学之间的共同点-是以更多奇异的,超量子的自然理论为代价的。为什么玩量子骰子不能帮助您获胜的游戏? Almeida等人在《 Physical Review Letters》中撰写。在量子力学的基础上提供了令人惊讶的转折,并告诉我们为什么我们至少应该对此问题感兴趣。当约翰·贝尔提出他的第一个同名不等式时,这表明量子力学不仅与古典物理学不相容,而且还违反了其深刻的概念宗旨。现在,Almeida等。表明存在量子力学无法克服的“无用”贝尔不等式。取而代之的是,这些不等式可以提供洞察力,使量子力学与陌生的自然理论区别开来。

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  • 来源
    《Nature》 |2010年第7310期|P.1053-1054|共2页
  • 作者

    Andreas Winter;

  • 作者单位

    Department of Mathematics, University of Bristol, Bristol BS81TW, UK, Centre for Quantum Technologies, National University of Singapore, Block S15,3 Science Drive 2, Singapore 117543;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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