arXivDaily arXiv每日学术速递 周一至周五更新
arXiv quant-ph/0005085quant-ph
收藏

满足精确测量卡西米尔力的期望

Fulfillment of expectations of precise measurements of the Casimir force

V. B. Svetovoy, M. V. Lokhanin

摘要:

我们比较理论预期的卡西米尔力与精确测量的结果。力计算在有限温度下的多层覆盖的机构使用Lifshitz理论。我们认为,金属化的介电函数必须直接测量,以达到必要的精度在力的计算。在不知道该函数的情况下,可以使用完美单晶材料的参数来建立关于力的明确限定的上限。在扭摆实验中测得的力与上限值并不矛盾。强调了薄Au/Pd层在原子力显微镜实验中的重要性。用显微镜测量的力大于物体之间小间距的上限。该差异显著,并在两次测量中重现。的差异的起源进行了讨论。最简单的修改实验提出允许使其结果更可靠,并回答这个问题,如果差异有任何关系的存在一个新的力量。

英文摘要:

We compare theoretical expectations for the Casimir force with the results of precise measurements. The force is calculated at finite temperature for multilayered covering of the bodies using the Lifshitz theory. We argue that the dielectric function of the metallization has to be directly measured to reach the necessary precision in the force calculation. Without knowledge of this function one can establish a well defined upper limit on the force using parameters of perfect single-crystal materials. The force measured in the torsion pendulum experiment does not contradict to the upper limit. Importance of a thin Au/Pd layer in the atomic force microscope experiments is stressed. The force measured with the microscope is larger than the upper limit at small separations between bodies. The discrepancy is significant and reproduced for both performed measurements. The origin of the discrepancy is discussed. The simplest modification of the experiment is proposed allowing to make its results more reliable and answer the question if the discrepancy has any relation with the existence of a new force.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑