Measurement of the Temperature Dependence of the Casimir-Polder Force | Zendy

John Obrecht | Zendy; R. J. Wild | Zendy; Mauro Antezza | Zendy; Лев П. Питаевский | Zendy; S. Stringari | Zendy; Eric Cornell | Zendy

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Measurement of the Temperature Dependence of the Casimir-Polder Force

Author(s) -

John Obrecht,

R. J. Wild,

Mauro Antezza,

Лев П. Питаевский,

S. Stringari,

Eric Cornell

Publication year - 2007

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.98.063201

Subject(s) - casimir effect , substrate (aquarium) , oscillation (cell signaling) , dipole , dielectric , condensed matter physics , physics , materials science , atom (system on chip) , atomic physics , chemistry , optoelectronics , classical mechanics , quantum mechanics , biochemistry , oceanography , computer science , embedded system , geology

We report on the first measurement of a temperature dependence of theCasimir-Polder force. This measurement was obtained by positioning a nearlypure 87-Rb Bose-Einstein condensate a few microns from a dielectric substrateand exciting its dipole oscillation. Changes in the collective oscillationfrequency of the magnetically trapped atoms result from spatial variations inthe surface-atom force. In our experiment, the dielectric substrate is heatedup 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 3times larger for a 605 K substrate than for a room-temperature substrate,showing a clear temperature dependence in agreement with theory.Comment: 4 pages, 4 figures, published in Physical Review Letter

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