论文标题
重力Landau抑制大量标量模式
Gravitational Landau Damping for massive scalar modes
论文作者
论文摘要
我们确定了兰道阻尼引力标量波的可能性，这些标量波在非散发气体的颗粒中传播。特别是，在同质性和各向同性的假设下，我们描述了均衡的介质，其均具有Jüttner-Maxwell分布，并通过分析确定弗拉索夫方程的阻尼率。我们发现，仅当波的相位速度在整个培养基中的传播中都是跨膜的，才会发生阻尼。最后，我们通过采用数值技术来研究宇宙学环境中的相对主义媒体。
We establish the possibility of Landau damping for gravitational scalar waves which propagate in a non-collisional gas of particles. In particular, under the hypothesis of homogeneity and isotropy, we describe the medium at the equilibrium with a Jüttner-Maxwell distribution, and we analytically determine the damping rate from the Vlasov equation. We find that damping occurs only if the phase velocity of the wave is subluminal throughout the propagation within the medium. Finally, we investigate relativistic media in cosmological settings by adopting numerical techniques.
