论文标题
通过光谱奇点的工程希格斯动力学
Engineering Higgs dynamics by spectral singularities
论文作者
论文摘要
我们概括了Bardeen-Cooper-Schrieffer冷凝物的动力学相图，考虑到对排斥性的吸引力，即临界淬灭（CQ）（CQ）和状态的非恒定密度（DOS）。我们表明，可以稳定不同的同步希格斯动态阶段，与状态密度（DOS）和不同淬灭协议的奇异性有关。特别是，CQ可以稳定与费米子带上边缘相关的被忽视的高频希格斯动力学相。对于补偿的狄拉克系统，我们发现在费米级别上的dirac-higgs模式与尖尖奇异性相关，我们表明同步相位在整个相图中变得更加普遍。还讨论了这些非凡现象的相关性及其在光学晶格中限制的费米原子集合中的实现。
We generalize the dynamical phase diagram of a Bardeen-Cooper-Schrieffer condensate, considering attractive to repulsive, i.e., critical quenches (CQ) and a non-constant density of states (DOS). We show that different synchronized Higgs dynamical phases can be stabilized, associated with singularities in the density of states (DOS) and different quench protocols. In particular, the CQ can stabilize an overlooked high-frequency Higgs dynamical phase related to the upper edge of the fermionic band. For a compensated Dirac system we find a Dirac-Higgs mode associated with the cusp singularity at the Fermi level, and we show that synchronized phases become more pervasive across the phase diagram. The relevance of these remarkable phenomena and their realization in ensembles of fermionic cold atoms confined in optical lattices is also discussed.
