论文标题
理解原子玻色子凝结物中具有合成载体电势的上级现象
Understanding superradiant phenomena with synthetic vector potentials in atomic Bose-Einstein condensates
论文作者
论文摘要
从理论上讲，我们通过提出基于Bose-Einstein凝结具有合成载体电位的玻璃的模型来研究曲面空间时间中量子场理论中的超平稳效应。超级流体的不合理性约束的破坏允许在简单的平面几何形状上研究超沉淀，并在Ergosurfaces的放大散射过程中获得直观的见解。当修改边界条件允许反射时，会发现动态不稳定性，类似于旋转空间时间中的奇异区域。讨论了黑洞几何形状中的地平线稳定。所有这些现象都通过与静电势中一维相对论的标量场的物理学进行精确映射重新解释。我们的研究提供了更深入的了解超级鼓励的基本机制：通过解开发挥作用的不同成分，它阐明了对耗散和视野的作用以及超级散射与不稳定性之间竞争的一些误解。
We theoretically investigate superradiance effects in quantum field theories in curved space-times by proposing an analogue model based on Bose--Einstein condensates subject to a synthetic vector potential. The breaking of the irrotationality constraint of superfluids allows to study superradiance in simple planar geometries and obtain intuitive insight in the amplified scattering processes at ergosurfaces. When boundary conditions are modified allowing for reflections, dynamical instabilities are found, similar to the ones of ergoregions in rotating space-times. Their stabilization by horizons in black hole geometries is discussed. All these phenomena are reinterpreted through an exact mapping with the physics of one-dimensional relativistic charged scalar fields in electrostatic potentials. Our study provides a deeper understanding on the basic mechanisms of superradiance: by disentangling the different ingredients at play, it shines light on some misconceptions on the role of dissipation and horizons and on the competition between superradiant scattering and instabilities.
