标题： 暗物质超流体中的动力学摩擦：黑洞双星的演化 显示英文标题

标题： Dynamical friction in dark matter superfluids: The evolution of black hole binaries

摘要： 超流体暗物质理论的特点是自相互作用的亚电子伏特粒子，它们热化并凝聚形成星系中的超流体核心。然而，星系中心的大质量黑洞会改变暗物质分布，并在其附近产生密度增强现象，称为暗物质尖峰。这些尖峰通过修改双星系统的引力波辐射并对其轨道物体施加动力学摩擦效应来影响双星系统的演化。在本工作中，我们评估了在中央大质量黑洞增强的超流体核心中运动的物体的动力学摩擦作用。作为第一步，我们计算了在圆形轨道中运动的物体所经历的动力学摩擦力。然后，我们估计了双星的引力波去相位，表明超流体阻力的影响超出了像LISA这样的空间实验的探测范围，与无碰撞暗物质相反，因此提供了一个区分这些暗物质模型的机会。 显示英文摘要

摘要： The theory of superfluid dark matter is characterized by self-interacting sub-eV particles that thermalize and condense to form a superfluid core in galaxies. Massive black holes at the center of galaxies, however, modify the dark matter distribution and result in a density enhancement in their vicinity known as dark matter spikes. The presence of these spikes affects the evolution of binary systems by modifying their gravitational wave emission and inducing dynamical friction effects on the orbiting bodies. In this work, we assess the role of dynamical friction for bodies moving through a superfluid core enhanced by a central massive black hole. As a first step, we compute the dynamical friction force experienced by bodies moving in a circular orbit. Then, we estimate the gravitational wave dephasing of the binary, showing that the effect of the superfluid drag force is beyond the reach of space-based experiments like LISA, contrarily to collisionless dark matter, therefore providing an opportunity to distinguish these dark matter models.