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Lagrangian Formulation of the Eulerian-EFT
Matias Zaldarriaga, Mehrdad Mirbabayi
We study the counter terms in the Eulerian version of the EFT of Large Scale Structure. We reformulate the equations to solve for the displacement of fluid elements as a bookkeepin…
Linear response to long wavelength fluctuations using curvature simulations
Tobias Baldauf, Uroš Seljak, Leonardo Senatore +1
We study the local response to long wavelength fluctuations in cosmological -body simulations, focusing on the matter and halo power spectra, halo abundance and non-linear trans…
On the reach of perturbative methods for dark matter density fields
Tobias Baldauf, Emmanuel Schaan, Matias Zaldarriaga
We study the mapping from Lagrangian to Eulerian space in the context of the Effective Field Theory (EFT) of Large Scale Structure. We compute Lagrangian displacements with Lagrang…
The Effective Field Theory of Large Scale Structure at Two Loops: the apparent scale dependence of the speed of sound
Tobias Baldauf, Lorenzo Mercolli, Matias Zaldarriaga
We study the Effective Field Theory of Large Scale Structure for cosmic density and momentum fields. We show that the finite part of the two-loop calculation and its counterterms i…
On the reach of perturbative descriptions for dark matter displacement fields
Tobias Baldauf, Emmanuel Schaan, Matias Zaldarriaga
We study Lagrangian Perturbation Theory (LPT) and its regularization in the Effective Field Theory (EFT) approach. We evaluate the LPT displacement with the same phases as a corres…
Equivalence Principle and the Baryon Acoustic Peak
Tobias Baldauf, Mehrdad Mirbabayi, Marko Simonović +1
We study the dominant effect of a long wavelength density perturbation on short distance physics. In the non-relativistic limit, the result is a uniform acceleration, fixe…
sCOLA: The N-body COLA Method Extended to the Spatial Domain
Svetlin Tassev, Daniel J. Eisenstein, Benjamin D. Wandelt +1
We present sCOLA -- an extension of the N-body COmoving Lagrangian Acceleration (COLA) method to the spatial domain. Similar to the original temporal-domain COLA, sCOLA is an N-bod…
Optimal analysis of the CMB trispectrum
Kendrick M. Smith, Leonardo Senatore, Matias Zaldarriaga
We develop a general framework for data analysis and phenomenology of the CMB four-point function or trispectrum. To lowest order in the derivative expansion, the inflationary acti…
Detecting Primordial -Modes after Planck
Paolo Creminelli, Diana López Nacir, Marko Simonović +2
We update the forecasts for the measurement of the tensor-to-scalar ratio for various ground-based experiments (AdvACT, CLASS, Keck/BICEP3, Simons Array, SPT-3G), balloons (EBE…