Lecture notes on the physics of cosmic microwave background anisotropies (2009)
Challinor, Anthony, Peiris, Hiranya
We review the theory of the temperature anisotropy and polarization of the cosmic microwave background (CMB) radiation, and describe what we have learned from current CMB observations. In particular,...
Observing the Evolution of the Universe (2009)
Aguirre, James, Amblard, Alexandre, Ashoorioon, Amjad, Baccigalupi, Carlo, Balbi, Amedeo, Bartlett, James, ...
How did the universe evolve? The fine angular scale (l>1000) temperature and polarization anisotropies in the CMB are a Rosetta stone for understanding the evolution of the universe. Through detailed...
Cosmological Constraints on f(R) Acceleration Models (2007)
Song, Yong-Seon, Peiris, Hiranya, Hu, Wayne
Models which accelerate the expansion of the universe through the addition of a function of the Ricci scalar f(R) leave a characteristic signature in the large-scale structure of the universe at the...
Slow Roll Reconstruction: Constraints on Inflation from the 3 Year WMAP Dataset (2006)
Peiris, Hiranya, Easther, Richard
We study the constraints on the inflationary parameter space derived from the 3 year WMAP dataset using ``slow roll reconstruction'', using the SDSS galaxy power spectrum to gain further leverage...
Implications of a Running Spectral Index for Slow Roll Inflation (2006)
Easther, Richard, Peiris, Hiranya
We analyze the weak (2 sigma) evidence for a running spectral index seen in the three-year WMAP dataset and its implications for single field, slow roll inflation. We assume that the running is...
Peiris, Hiranya, Easther, Richard
We introduce a new method for applying an inflationary prior to a cosmological dataset that includes relations between observables at arbitrary order in the slow roll expansion. The process is based...
Considerations in optimizing CMB polarization experiments to constrain inflationary physics (2005)
Verde, Licia, Peiris, Hiranya, Jimenez, Raul
We quantify the limiting factors in optimizing current-technology cosmic microwave background (CMB) polarization experiments in order to learn about inflationary physics. We consider space-based,...
Boundary Effective Field Theory and Trans-Planckian Perturbations: Astrophysical Implications (2005)
Easther, Richard, Kinney, William H., Peiris, Hiranya
We contrast two approaches to calculating trans-Planckian corrections to the inflationary perturbation spectrum: the New Physics Hypersurface [NPH] model, in which modes are normalized when their...
Observing Trans-Planckian Signatures in the Cosmic Microwave Background (2004)
Easther, Richard, Kinney, William H, Peiris, Hiranya
We examine the constraints cosmological observations can place on any trans-Planckian corrections to the primordial spectrum of perturbations underlying the anisotropies in the Cosmic Microwave...
Jimenez, Raul, Verde, Licia, Peiris, Hiranya, Kosowsky, Arthur
We improve the algorithm of Kosowsky, Milosavljevic, and Jimenez (2002) for computing power spectra of the cosmic microwave background. The present algorithm computes not only the temperature power...