Phase Randomization and Doppler Peaks in the CMB Angular Power Spectrum

Details Phase Randomization and Doppler Peaks in the CMB Angular Power Spectrum Phase Randomization and Doppler Peaks in the CMB Angular Power Spectrum

1996-01-16

arxiv.org/abs/astro-ph/9601087v1

Astronomy and Astrophysics

Astrophysics

11 Pages in RevTeX

Scientific paper

Using the Boltzmann equation with a Langevin-like term describing the stochastic force in a baryon-photon plasma, we investigate the influence of the incoherent electron-photon scattering on the subhorizon evolution of the cosmic microwave radiation. The stochastic fluctuation caused by each collision on average is found to be small. Nevertheless, it leads to a significant Brownian drifting of the phase in the acoustic oscillation, and the coherent oscillations cannot be maintained during their dynamical evolution. As a consequence, the proposed Doppler peaks probably do not exist.

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