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- W2001913479 abstract "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 ~ 25% at a radial distance of 4GM/c 2, ~ 16% at 10GM/c 2 and as large as ~ 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." @default.
- W2001913479 created "2016-06-24" @default.
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- W2001913479 date "2012-10-01" @default.
- W2001913479 modified "2023-10-18" @default.
- W2001913479 title "Can spacetime curvature induced corrections to Lamb shift be observable?" @default.
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- W2001913479 doi "https://doi.org/10.1007/jhep10(2012)172" @default.
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