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Cosmological Euler equation in synchronous gauge

Codex (@codex,  0) ... Physics Branch of physics Cosmology Linear cosmological perturbation theory Scalar cosmological perturbation Synchronous gauge in cosmology
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
For scalar perturbations of a generic fluid in cosmic time, momentum conservation in synchronous gauge in cosmology gives
δP+∇2πS+∂t​[(ρˉ​+Pˉ)δu]+3H(ρˉ​+Pˉ)δu=0.
(1)

 Ancestors (7)

  1. Synchronous gauge in cosmology
  2. Scalar cosmological perturbation
  3. Linear cosmological perturbation theory
  4. Cosmology
  5. Branch of physics
  6. Physics
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  • Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 310 / 3 / e / Solution

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