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[其它] 求分析一段No题阅读 [复制链接]

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发表于 2017-5-10 11:52:15 |只看该作者 |倒序浏览
The essential condition for the decay of the vacuum is the presence of an intense electric field. As a result of the decay of the vacuum, the space permeated by such a field can be said to acquire an electric charge, and it can be called a charged vacuum. The particles that materialize in the space make the charge manifest. An electric field of sufficient intensity to create a charged vacuum is likely to be found in only one place: in the immediate vicinity of a superheavy atomic nucleus, one with about twice as many protons as the heaviest natural nuclei known. A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum. Experiments attempting to achieve this are now under way.
出自一篇北美题, 真空涨落和衰变研究_(:з」∠)_
表示搞不懂这段话的逻辑关系....
大佬可否帮忙分析一下, 感激不尽_(:з」∠)_
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寄托兑换店纪念章

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发表于 2017-5-10 14:04:49 |只看该作者
哈我懂了!
自己来解答一下(*′∇`*)
上一段(抱歉我没放)的最后一句话是 In other words, under these conditions the vacuum is an unstable state and can decay into a state of lower energy; i.e., one in which real particles are created.
这句话的重点就在于 the vacuum under these conditions are where the occurrence of the creation of these particles.
然后紧接着就是上面这段话了. 第一句说必须有强电场存在才会有真空衰变, 然后blabla给出了一堆细节, 然后从An electric field of...开始说了一个意思, 就是这种强电场必须得在临近超重原子核的地方才能找到.
所以整个的逻辑就是, 临近超重原子核的地方有强电场出现, 然后强电场是真空衰变的根本条件, 然后这种真空里又会创造出实粒子.
然后题目问说, 下列那个选项可以weaken作者关于真空衰变的条件的assertions?
然后答案是C 大致意思就是在该有实粒子的地方没有出现实粒子, 正好contradict了原文逻辑.
完美٩( 'ω' )و

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RE: 求分析一段No题阅读 [修改]
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求分析一段No题阅读
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