New Calculation of the Polarization Contribution to the Energy of a Negative Ion in Liquid Helium
New Calculation of the Polarization Contribution to the Energy of a Negative Ion in Liquid Helium
复制标题
液氦中负离子能量极化贡献的新计算
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
H. Maris
中科院分区：
文献类型：
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作者：
D. Konstantinov;H. Maris
注入液氦 4 的电子形成一个半径约为 19 Å 的气泡。气泡的大小由电子的零点能量、气泡壁的表面能和电子电场中氦的极化能之间的平衡决定。我们得出了气泡偏振能的修正结果。我们表明，之前将电子视为位于气泡中心的点电荷的计算是不准确的，并且必须考虑到电子位置的量子涨落。
An electron injected into liquid helium-4 forms a bubble of radius approximately 19 Å. The size of the bubble is determined by a balance between the zero-point energy of the electron, the surface energy of the bubble wall, and the polarization energy of the helium in the electric field of the electron. We derive a modified result for the polarization energy of the bubble. We show that previous calculations in which the electron is treated as a point charge localized at the center of the bubble are inaccurate, and that it is essential to allow for the quantum fluctuations in the position of the electron.