卡西米尔效应
振荡(细胞信号)
基质(水族馆)
偶极子
电介质
物理
凝聚态物理
原子物理学
材料科学
Atom(片上系统)
化学
光电子学
经典力学
量子力学
海洋学
地质学
嵌入式系统
生物化学
计算机科学
作者
John Obrecht,R. J. Wild,Mauro Antezza,Lev P. Pitaevskiĭ,S. Stringari,Eric A. Cornell
标识
DOI:10.1103/physrevlett.98.063201
摘要
We report on the first measurement of a temperature dependence of the Casimir-Polder force. This measurement was obtained by positioning a nearly pure 87Rb Bose-Einstein condensate a few microns from a dielectric substrate and exciting its dipole oscillation. Changes in the collective oscillation frequency of the magnetically trapped atoms result from spatial variations in the surface-atom force. In our experiment, the dielectric substrate is heated up to 605 K, while the surrounding environment is kept near room temperature (310 K). The effect of the Casimir-Polder force is measured to be nearly 3 times larger for a 605 K substrate than for a room-temperature substrate, showing a clear temperature dependence in agreement with theory.
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