Coherence and Sakharov Oscillations in the Microwave Sky

1996/12/02 by Andreas Albrecht, Albrecht, Andreas · 4 citations
Engineering · Physics and Astronomy · #Advanced Frequency and Time Standards #Astrophysics (astro-ph) #FOS: Physical sciences #Geophysics and Sensor Technology #Gyrotron and Vacuum Electronics Research #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/9612015

13 pages including 4 figures. To appear in proceedings of the XXXIst Rencontre de Moriond, `Microwave Background Anisotropies'

arxiv created 1996/12/02 · openalex publication_date 1996/12/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

I discuss the origin of the ``Sakharov oscillations'' (or ``secondary Doppler peaks'') in standard angular power spectra of the Cosmic Microwave Background anisotropies calculated for inflationary models. I contrast this with the production of CMB anisotropies in `active' models and argue that the presence or absence of Sakharov oscillations will reveal fundamental properties of the primordial perturbations.

Cited by

• A new statistic for picking out non-Gaussianity in the CMB
• Can inflationary models of cosmic perturbations evade the secondary oscillation test?
• Is the squeezing of relic gravitational waves produced by inflation detectable?
• Quantum amplitudes in black-hole evaporation: coherent and squeezed states

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