Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany.
Phys Rev Lett. 2013 Nov 15;111(20):201601. doi: 10.1103/PhysRevLett.111.201601. Epub 2013 Nov 12.
We study the real-time dynamics of string breaking in quantum electrodynamics in one spatial dimension. A two-stage process with a clear separation of time and energy scales for the fermion-antifermion pair creation and subsequent charge separation leading to the screening of external charges is found. Going away from the traditional setup of external static charges, we establish the phenomenon of multiple string breaking by considering dynamical charges flying apart.
我们研究了一维量子电动力学中字符串断裂的实时动力学。我们发现了一个两阶段过程，其中费米子-反费米子对的产生以及随后导致外部电荷屏蔽的电荷分离在时间和能量尺度上有明显的分离。我们通过考虑动态电荷的分离，摆脱了外部静态电荷的传统设置，建立了多个字符串断裂的现象。
