Measurement of the temperature dependence of the Casimir-Polder force

被引：353

作者：

Obrecht, J. M. ^{[1
]}

Wild, R. J.

Antezza, M.

Pitaevskii, L. P.

Stringari, S.

Cornell, E. A.

机构：

[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

[3] Univ Trent, Dipartimento Fis, I-38050 Trento, Italy

[4] CNR INFM BEC Ctr, I-38050 Trento, Italy

[5] PL Kapitza Phys Problems Inst, Moscow 119334, Russia

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.98.063201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 Rb-87 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.

引用

页数：4

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