论文标题
恒星中的超高级：恒星介质中田野阻尼的非平衡方法
Superradiance in Stars: Non-equilibrium approach to damping of fields in stellar media
论文作者
论文摘要
黑洞中的超级崇拜是充分理解的，但是直到现在缺乏恒星的超级反应的一般治疗方法。鉴于我们可以轻松观察到孤立的中子星和由出色的超沉载造成的一系列特征，这是令人惊讶的。在这项工作中，我们介绍了第一个用于计算旋转恒星超高式速率的系统管道。我们的方法可以与任何描述超级磁场与恒星组成部分之间相互作用的拉格朗日式使用。我们的方案分为两个部分：首先，我们展示了如何使用有限密度的场理论来表达长波长模式在微见论散射过程中的吸收到恒星中。这使我们能够为玻感场的运动方程得出一个阻尼的运动方程。然后，我们将其归为有效的理论，该理论是为长波长（所谓的世界形式主义）描述任意多极矩的超级式模式的放大，以迅速旋转的恒星。我们的方法将出色的超沉载置于牢固的理论基础上，并允许计算由玻色域和恒星物质之间的任何相互作用产生的超高率率。
Superradiance in black holes is well-understood but a general treatment for superradiance in stars has until now been lacking. This is surprising given the ease with which we can observe isolated neutron stars and the array of signatures which would result from stellar superradiance. In this work, we present the first systematic pipeline for computing superradiance rates in rotating stars. Our method can be used with any Lagrangian describing the interaction between the superradiant field and the constituents of the star. Our scheme falls into two parts: firstly we show how field theory at finite density can be used to express the absorption of long wavelength modes into the star in terms of microphsyical scattering processes. This allows us to derive a damped equation of motion for the bosonic field. We then feed this into an effective theory for long wavelengths (the so-called worldline formalism) to describe the amplification of superradiant modes of arbitrary multipole moment for a rapidly rotating star. Our method places stellar superradiance on a firm theoretical footing and allows the calculation of the superradiance rate arising from any interaction between a bosonic field and stellar matter.
