Schützhold Ralf, Schaller Gernot, Habs Dietrich
Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany.
Phys Rev Lett. 2006 Sep 22;97(12):121302. doi: 10.1103/PhysRevLett.97.121302.
We calculate the radiation resulting from the Unruh effect for strongly accelerated electrons and show that the photons are created in pairs whose polarizations are perfectly correlated. Apart from the photon statistics, this quantum radiation can further be discriminated from the classical (Larmor) radiation via the different spectral and angular distributions. The signatures of the Unruh effect become significant if the external electromagnetic field accelerating the electrons is not too far below the Schwinger limit and might be observable with future facilities. Finally, the corrections due to the birefringent nature of the QED vacuum at such ultrahigh fields are discussed.
我们计算了强加速电子的安鲁效应所产生的辐射，并表明光子是以极化完美关联的对产生的。除了光子统计外，这种量子辐射还可以通过不同的光谱和角分布与经典（拉莫尔）辐射进一步区分开来。如果加速电子的外部电磁场不太低于施温格极限，安鲁效应的特征就会变得显著，并且可能在未来的设施中被观测到。最后，讨论了在这种超高场下由于量子电动力学真空的双折射性质而产生的修正。
