Comment on a Paper by Fang, Huang, and Wu

Details Comment on a Paper by Fang, Huang, and Wu Comment on a Paper by Fang, Huang, and Wu

1996-03-15

arxiv.org/abs/astro-ph/9603079v1

Astronomy and Astrophysics

Astrophysics

2 pages LaTeX

Scientific paper

Before decoupling in the early universe, the tightly coupled photon/electron gas underwent acoustic oscillations. These oscillations should be visible today in the spectrum of anisotropies. Recently Fang, Huang, and Wu (1996) claimed that when random processes are accounted for, the phases of these oscillations are no longer coherent. In fact, they claim that the well-defined peaks will be completely smoothed out. We show here that their claim is incorrect. The standard Boltzmann treatment determining the anisotropies is sufficient; random processes do not change the standard result.

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