Classical Lumps and Their Quantum Descendants
Classical Lumps and Their Quantum Descendants
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经典块及其量子后代
DOI：
10.1007/978-1-4613-4208-3_11
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发表时间：
1977
期刊：
影响因子：
10
通讯作者：
S. Coleman
中科院分区：
文献类型：
--
作者：
S. Coleman
一块石头投入静止的水中，会激起涟漪，涟漪扩散，最终消失。石头会扰动水，赋予它能量，但是，即使我们忽略摩擦力，这种能量也会随着时间的推移而扩散到水面上。如果我们想象水的范围是无限的，那么，如果我们等待足够长的时间，水就不会与石头被铸造之前的状态有明显的不同。扰动消散。
A stone thrown into a still body of water makes ripples that spread out and eventually die away. The stone disturbs the water, gives it energy, but, even if we ignore friction, this energy tends in the course of time to spread out over the water. If we imagine the water to be infinite in extent, then, if we wait long enough, at no point is the water appreciably different from its state before the stone was cast. The disturbance dissipates.