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arXiv 1204.2015gr-qcastro-ph.HEhep-th
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时空曲率引起的兰姆位移修正能被观测到吗?

Can spacetime curvature induced corrections to Lamb shift be observable?

Wenting Zhou, Hongwei Yu

摘要:

兰姆位移是由原子与量子场的真空涨落的耦合引起的,因此当时空弯曲时,由于真空涨落被时空曲率的存在所修正,因此预计会出现修正。在这里,我们计算的曲率引起的校正兰姆移位外的球对称对象,并证明这种校正可以是非常显着的外紧凑的大规模天体物理体。例如,对于中子星或恒星质量的黑洞,径向距离为$4GM/c^2$时的修正为$\sim$ 25%,$10GM/c^2$时的修正为$\sim$ 16%,甚至在$100GM/c^2$时的修正也高达$\sim$ 1.6%,其中$M$是物体的质量,$G$是牛顿常数,$c$是光速。原则上,我们可以从遥远的致密超大质量天体的光谱中找到这样的修正。因此,我们的结果提出了一种可能的方法来检测基本的量子效应在天文观测。

英文摘要:

The Lamb shift results from the coupling of an atom to vacuum fluctuations of quantum fields, so corrections are expected to arise when the spacetime is curved since the vacuum fluctuations are modified by the presence of spacetime curvature. Here, we calculate the curvature-induced correction to the Lamb shift outside a spherically symmetric object and demonstrate that this correction can be remarkably significant outside a compact massive astrophysical body. For instance, for a neutron star or a stellar mass black hole, the correction is $\sim$ 25% at a radial distance of $4GM/c^2$, $\sim$ 16% at $10GM/c^2$ and as large as $\sim$ 1.6% even at $100GM/c^2$, where $M$ is the mass of the object, $G$ the Newtonian constant, and $c$ the speed of light. In principle, we can look at the spectra from a distant compact super-massive body to find such corrections. Therefore, our results suggest a possible way of detecting fundamental quantum effects in astronomical observations.

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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