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Title: Measurement of the Temperature Dependence of the Casimir-Polder Force

Abstract

We report on the first measurement of a temperature dependence of the Casimir-Polder force. This measurement was obtained by positioning a nearly pure {sup 87}Rb 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.

Authors:
; ;  [1]; ;  [2];  [2];  [3]
  1. JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA, and Department of Physics, University of Colorado, Boulder, Colorado 80309-0390 (United States)
  2. Dipartimento di Fisica, Universita di Trento and CNR-INFM BEC Center, Via Sommarive 14, I-38050 Povo, Trento (Italy)
  3. (Russian Federation)
Publication Date:
OSTI Identifier:
20955445
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevLett.98.063201; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BOSE-EINSTEIN CONDENSATION; DIELECTRIC MATERIALS; DIPOLES; OSCILLATIONS; RUBIDIUM 87; SUBSTRATES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K

Citation Formats

Obrecht, J. M., Wild, R. J., Cornell, E. A., Antezza, M., Stringari, S., Pitaevskii, L. P., and Kapitza Institute for Physical Problems, ulitza Kosygina 2, 119334 Moscow. Measurement of the Temperature Dependence of the Casimir-Polder Force. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.063201.
Obrecht, J. M., Wild, R. J., Cornell, E. A., Antezza, M., Stringari, S., Pitaevskii, L. P., & Kapitza Institute for Physical Problems, ulitza Kosygina 2, 119334 Moscow. Measurement of the Temperature Dependence of the Casimir-Polder Force. United States. doi:10.1103/PHYSREVLETT.98.063201.
Obrecht, J. M., Wild, R. J., Cornell, E. A., Antezza, M., Stringari, S., Pitaevskii, L. P., and Kapitza Institute for Physical Problems, ulitza Kosygina 2, 119334 Moscow. Fri . "Measurement of the Temperature Dependence of the Casimir-Polder Force". United States. doi:10.1103/PHYSREVLETT.98.063201.
@article{osti_20955445,
title = {Measurement of the Temperature Dependence of the Casimir-Polder Force},
author = {Obrecht, J. M. and Wild, R. J. and Cornell, E. A. and Antezza, M. and Stringari, S. and Pitaevskii, L. P. and Kapitza Institute for Physical Problems, ulitza Kosygina 2, 119334 Moscow},
abstractNote = {We report on the first measurement of a temperature dependence of the Casimir-Polder force. This measurement was obtained by positioning a nearly pure {sup 87}Rb 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.},
doi = {10.1103/PHYSREVLETT.98.063201},
journal = {Physical Review Letters},
number = 6,
volume = 98,
place = {United States},
year = {Fri Feb 09 00:00:00 EST 2007},
month = {Fri Feb 09 00:00:00 EST 2007}
}