Dynamical suppression of non-adiabatic modes

Details Dynamical suppression of non-adiabatic modes Dynamical suppression of non-adiabatic modes

2008-08-27

arxiv.org/abs/0808.3692v1

Phys.Rev.D78:087301,2008

Astronomy and Astrophysics

Astrophysics

9 pages, four figures

Scientific paper

10.1103/PhysRevD.78.087301

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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