论文标题
非线性扩散的理论具有物理间隙模式
Theory of non-linear diffusion with a physical gapped mode
论文作者
论文摘要
在具有一个保守电荷的系统中，电荷扩散是通过扩散波动的有效场理论（EFT）中的非线性自我互动来改变的。我们包括最慢的紫外线（UV）模式，构建了紫外线调节的EFT。由于不良金属系统中的实验数据支持，这种紫外线模式的放松时间受到重新归一化的保护。此外，延迟的密度密度绿色功能可获得四个分支点，最终增加了适用性的范围。我们讨论了长期尾巴的命运以及对夸克Gluon等离子体的影响。
In a system with one conserved charge the charge diffusion is modified by non-linear self-interactions within an effective field theory (EFT) of diffusive fluctuations. We include the slowest ultraviolet (UV) mode, constructing a UV-regulated EFT. The relaxation time of this UV mode is protected from renormalization, as supported by experimental data in a bad metal system. Furthermore, the retarded density-density Green's function acquires four branch points, eventually increasing the range of applicability. We discuss the fate of long-time-tails as well as implications for the quark gluon plasma.
