Effective Mass of an Electron Bubble in Superfluid Helium-4

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• 作者：Yunhu Huang ; Humphrey J. Maris
• 关键词：Superfluid helium ; 4 ; Electron bubbles
• 刊名：Journal of Low Temperature Physics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：186
• 期：3-4
• 页码：208-216
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials;
• 出版者：Springer US
• ISSN：1573-7357
• 卷排序：186

文摘

We present the results of computer simulations of the motion of an electron bubble through superfluid helium-4 when acted upon by an electric field. The simulations are based on an extended version of the Gross–Pitaevskii equation. The temperature is assumed to be sufficiently low for the drag exerted on the bubble by thermal excitations to be negligible, and the calculations are made for velocities below the critical velocitie for nucleation of vortices and roton production. We calculate the effective mass \(m*\) of the bubble and obtain results in excellent agreement with the measurements of Poitrenaud and Williams, and Ellis, McClintock, and Bowley.