Theorists Contributions to Cosmology DesignMotivateAnalyze Surveys CMB lensing

Theorists’ Contributions to Cosmology Design/Motivate/Analyze Surveys -- CMB lensing -- Primordial Non-gaussianity -- Modified Gravity Software -- Cosmo Simulations -- Analysis pipelines -- Level 3 Frameworks

Gravitational Lensing of the CMB is deflected as it travels to us Deflection depends on gravitational potential along the line of sight Theorists designed estimators for the projected gravitational potential

Gravitational Lensing of the CMB Can make maps … And calculate spectra

Primordial Non-Gaussianity Effective Field Theory relates operators to bispectrum shapes that can be observed on the sky

Primordial Non-Gaussianity Theorists proved that in the presence of PNG, the variance is larger in the presence of a large wavelength over-density … leading to unique signature in galaxy surveys

Modified Gravity Even initial f(R) models led to an appreciation of extra degrees of freedom Massive gravity has extra DOF; with appropriate (Galileon) Lagrangian, can avoid Boulware-Deser ghosts

Modified Gravity GENERAL RELATIVITY Both potential deviations depend on both space and time. Upcoming surveys will measure dozens of modes; it’s not just w! MODIFIED GRAVITY

Software Goal Use masks derived from simulations to quantify the bias in the angular correlation functions due to the survey tile strategy. Task Apply the survey masks to uniformly distributed source samples and calculate the angular correlation function estimators. Preconditions: Survey masks need to have been generated. Post-conditions: Algorithms for source & field selection may be modified on an application-specific basis. Description: Build catalogs for a large area of the sky based on the survey strategy and compute correlation functions and assess biases and mitigation strategies. Cosmo sims (similar to LQCD) Level 3 Software Framework Likelihood system for galaxy surveys