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arXiv 1403.2437quant-phcond-mat.othergr-qc
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Casimir-Polder力中Unruh效应的热和非热特征

Thermal and non-thermal signatures of the Unruh effect in Casimir-Polder forces

J. Marino, A. Noto, R. Passante

备注：
6 pages, 1 figure. Revised version
发表信息：
Phys. Rev. Lett. 113, 020403 (2014)
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摘要：

我们发现，Casimir-Polder力之间的两个相对论性均匀加速原子表现出从短距离的类热行为预测的Unruh效应，到长距离的非热行为，与故障的本地惯性描述系统的过渡。这种现象扩展了Unruh热响应检测到一个单一的加速观察员的加速空间扩展系统的两个粒子，我们确定的特征长度尺度为这个交叉与适当的加速度的逆的两个原子。我们的结果是在四阶微扰理论中分离出真空涨落和辐射反应场对两个运动在两个一般定距轨道上的原子与标量场线性耦合的Casimir-Polder相互作用的贡献。该领域可以假定在其真空状态或在有限的温度下，从而在一个通用的方法计算Casimir-Polder力在固定制度。

英文摘要：

We show that Casimir-Polder forces between two relativistic uniformly accelerated atoms exhibit a transition from the short distance thermal-like behavior predicted by the Unruh effect, to a long distance non-thermal behavior, associated with the breakdown of a local inertial description of the system. This phenomenology extends the Unruh thermal response detected by a single accelerated observer to an accelerated spatially extended system of two particles, and we identify the characteristic length scale for this crossover with the inverse of the proper acceleration of the two atoms. Our results are derived separating at fourth order in perturbation theory the contributions of vacuum fluctuations and radiation reaction field to the Casimir-Polder interaction between two atoms moving in two generic stationary trajectories separated by a constant distance, and linearly coupled to a scalar field. The field can be assumed in its vacuum state or at finite temperature, resulting in a general method for the computation of Casimir-Polder forces in stationary regimes.

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