磁致真空衰减
Magnetically induced vacuum decay
摘要:
本文研究了真空在有和无外加磁场时的费米真空能。两个真空的能量差导致真空衰减和真空能量释放。在量子场论的背景下,我们讨论了为什么和如何真空能量可以释放自发光子发射和/或顺磁屏蔽外部磁场。此外,我们还定量地计算了释放的真空能量、顺磁屏蔽效应以及自发光子发射的速率和光谱。讨论了在实验上探测这种真空能量释放效应的可能性,以及这种效应对反常X射线脉冲星的解释。
英文摘要:
We study the fermionic vacuum energy of vacua with and without being applied an external magnetic field. The energetic difference of two vacua leads to the vacuum decaying and the vacuum-energy releasing. In the context of quantum field theories, we discuss why and how the vacuum energy can be released by spontaneous photon emissions and/or paramagnetically screening the external magnetic field. In addition, we quantitatively compute the vacuum energy released, the paramagnetic screening effect and the rate and spectrum of spontaneous photon emissions. The possibilities of experimentally detecting such an effect of vacuum-energy releasing and this effect accounting for the anormalous X-ray pulsar are discussed.
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