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arxiv: 0902.0239 · v3 · submitted 2009-02-02 · 💻 cs.SC · gr-qc· physics.comp-ph

The acoustic wave equation in the expanding universe. Sachs-Wolfe theorem

classification 💻 cs.SC gr-qcphysics.comp-ph
keywords acousticequationfielduniversealembertappliedarbitraryauxiliary
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In this paper the acoustic field propagating in the early hot ($p=\epsilon/$) universe of arbitrary space curvature ($K=0, \pm 1$) is considered. The field equations are reduced to the d'Alembert equation in an auxiliary static Roberson-Walker space-time. Symbolic computation in {\em Mathematica} is applied.

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