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The Sachs-Wolfe Effect
Martin White, Wayne Hu
We present a pedagogical derivation of the Sachs-Wolfe effect, specifically the factor 1/3 relating the temperature fluctuations to gravitational potentials. The result arises from…
The Damping Tail of CMB Anisotropies
Wayne Hu, Martin White
By decomposing the damping tail of CMB anisotropies into a series of transfer functions representing individual physical effects, we provide ingredients that will aid in the recons…
Measuring the Curvature of the Universe
Wayne Hu, Martin White
We discuss how the curvature of the universe can be robustly measured employing only the gross features of the CMB anisotropy spectrum. Though the position of the first peak is not…
Testing Inflation with Small Scale CMB Anisotropies
Martin White, Wayne Hu
We discuss ability of the harmonic pattern of peaks in the CMB angular power spectrum to test inflation. By studying robust features of alternate models, which must all be isocurva…
Distinguishing Causal Seeds from Inflation
Wayne Hu, David N. Spergel, Martin White
Causal seed models, such as cosmological defects, generically predict a distinctly different structure to the CMB power spectrum than inflation, due to the behavior of the perturba…
The Physics of Microwave Background Anisotropies
Wayne Hu, Naoshi Sugiyama, Joseph Silk
Cosmic microwave background anisotropies provide a vast amount of cosmological information. Their full physical content and detailed structure can be understood in a simple and int…