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arXiv · 2412.06747

On the Motion of Compact Objects in Relativistic Viscous Fluids

Beka Modrekiladze·Ira Z. Rothstein·Jordan Wilson-Gerow
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Abstract

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.

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Beka Modrekiladze, Ira Z. Rothstein, Jordan Wilson-Gerow. 2024-12-09. On the Motion of Compact Objects in Relativistic Viscous Fluids. https://arxiv.org/abs/2412.06747

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