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arXiv quant-ph/9510025quant-phatom-phgr-qchep-ph
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任意轨道上原子的广义Unruh效应和Lamb位移

Generalized Unruh effect and Lamb shift for atoms on arbitrary stationary trajectories

Juergen Audretsch, Rainer Mueller, Markus Holzmann

摘要:

本文研究了任意稳态轨道上加速原子的自发去激发和激发(“广义Unruh效应”)。我们分别考虑了真空涨落和辐射反应的影响。我们表明,辐射反应一般不改变由静止加速,而真空涨落的贡献不同的所有静止加速轨迹从其惯性值。从基态自发激发发生在所有{加速静止}轨道上,因此是“正常情况”。我们还证明了二能级原子的辐射能量移动(“兰姆位移”)是由所有固定轨迹的加速度修改。同样,只有真空涨落才会引起这种位移。我们的结果说明了在圆周运动的原子,这可能是实验相关的特殊情况。

英文摘要:

We study the spontaneous de-excitation and excitation of accelerated atoms on arbitrary stationary trajectories (``generalized Unruh effect''). We consider the effects of vacuum fluctuations and radiation reaction separately. We show that radiation reaction is generally not altered by stationary acceleration, whereas the contribution of vacuum fluctuations differs for all stationary accelerated trajectories from its inertial value. Spontaneous excitation from the ground state occurs for all { accelerated stationary} trajectories and is therefore the ``normal case''. We furthermore show that the radiative energy shift (``Lamb shift'') of a two-level atom is modified by acceleration for all stationary trajectories. Again only vacuum fluctuations give rise to the shift. Our results are illustrated for the special case of an atom in circular motion, which may be experimentally relevant.

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。

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