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Energy-momentum response to metric perturbations in the fluid dynamic regime

Year: 2025
Type: preprint
Abstract: The interplay of relativistic fluid dynamics and spacetime geometry is discussed in the regime of small wave numbers and frequencies. A combination of gravitational Ward identities and fluid dynamic equations of motion in the Mueller-Israel-Stewart formulation is used to explicitly determine the retarded linear response of the energy-momentum tensor to metric perturbations. We also discuss applications to gravitational wave production and the damping of gravitational waves in a relativistic fluid.
Language: English
Open Access status: green
OpenAlex ID: W7077674651
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