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arXiv · 0808.3692

Dynamical suppression of non-adiabatic modes

Massimo Giovannini
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Abstract

Recent analyses of the WMAP 5-year data constrain possible non-adiabatic contributions to the initial conditions of CMB anisotropies. Depending upon the early dynamics of the plasma, the amplitude of the entropic modes can experience a different suppression by the time of photon decoupling. Explicit examples of the latter observation are presented both analytically and numerically when the post-inflationary dynamics is dominated by a stiff contribution.

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Massimo Giovannini. 2008-08-27. Dynamical suppression of non-adiabatic modes. https://doi.org/10.1103/physrevd.78.087301

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