论致密物体在相对论性粘性流体中的运动

IF 5.9 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Journal of Cosmology and Astroparticle Physics Pub Date : 2025-04-07 DOI:10.1088/1475-7516/2025/04/014

Beka Modrekiladze, Ira Z. Rothstein and Jordan Wilson-Gerow

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引用次数: 0

摘要

我们提出了紧凑物体在粘性流体中做相对论运动的世界线有效场理论。当速度梯度与物体的反比大小相比很小时，该理论是有效的。通过将流体与物体之间的所有相互作用转化为作用中的源项，在 EFT 内工作无需求解边界值问题。当物体和流体的相对速度小于光速时，我们使用 EFT 来推导浸没在弯曲背景粘性流体中的紧凑物体的相对论运动方程。

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On the motion of compact objects in relativistic viscous fluids

We present a world-line effective field theory of compact objects moving relativistically through a viscous fluid. The theory is valid when velocity gradients are small compared to the inverse size of the object. Working within the EFT eliminates the need to solve a boundary value problem by turning all interactions between the fluid and the object into a source term in the action. We use the EFT to derive the relativistic equations of motion for a compact object immersed in a viscous fluid in a curved background, when the relative velocity of the object and the fluid is small compared to the speed of light.

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来源期刊

Journal of Cosmology and Astroparticle Physics 地学天文-天文与天体物理

CiteScore

10.20

自引率

23.40%

发文量

632

审稿时长

1 months

期刊介绍： Journal of Cosmology and Astroparticle Physics (JCAP) encompasses theoretical, observational and experimental areas as well as computation and simulation. The journal covers the latest developments in the theory of all fundamental interactions and their cosmological implications (e.g. M-theory and cosmology, brane cosmology). JCAP''s coverage also includes topics such as formation, dynamics and clustering of galaxies, pre-galactic star formation, x-ray astronomy, radio astronomy, gravitational lensing, active galactic nuclei, intergalactic and interstellar matter.