Pérez Alfredo, Prohazka Stefan, Seraj Ali
<a href="https://ror.org/00t8xfq63">Centro de Estudios Científicos (CECs)</a>, Avenida Arturo Prat 514, Valdivia, Chile.
Facultad de Ingeniería, Arquitectura y Diseño, <a href="https://ror.org/04jrwm652">Universidad San Sebastián</a>, sede Valdivia, General Lagos 1163, Valdivia 5110693, Chile.
Phys Rev Lett. 2024 Jul 12;133(2):021603. doi: 10.1103/PhysRevLett.133.021603.
In theories with conserved dipole moment, isolated charged particles (fractons) are immobile, but dipoles can move. We couple these dipoles to the fracton gauge theory and analyze the universal infrared structure. This uncovers an observable double kick memory effect which we relate to a novel dipole soft theorem. Together with their asymptotic symmetries this constitutes the first realization of an infrared triangle beyond Lorentz symmetry. This demonstrates the robustness of these IR structures and paves the way for their investigation in condensed matter systems and beyond.
在具有守恒偶极矩的理论中，孤立带电粒子（分数子）是不动的，但偶极子可以移动。我们将这些偶极子与分数子规范理论耦合，并分析其通用红外结构。这揭示了一种可观测的双脉冲记忆效应，我们将其与一个新的偶极子软定理联系起来。连同它们的渐近对称性，这构成了超越洛伦兹对称性的红外三角形的首次实现。这证明了这些红外结构的稳健性，并为在凝聚态物质系统及其他领域对其进行研究铺平了道路。
