11 papers
Primordial Physics in the Nonlinear Universe: Revealing the oscillating halo bias from cosmological collider models
Dhayaa Anbajagane, Neal Dalal
The initial conditions of our Universe contain a wealth of information about the particle physics of very high energies. One such class of signatures, called cosmological colliders…
Primordial Physics in the Nonlinear Universe: Towards particle constraints using the Weak lensing, Thermal SZ, and X-ray fields
Dhayaa Anbajagane
Primordial non-Gaussianities (PNGs) are a broad class of features in the initial density field that are connected to the particle physics of the early Universe. Measuring the ampli…
Primordial Physics in the Nonlinear Universe: mapping cosmological collider models to weak-lensing observables
Dhayaa Anbajagane, Hayden Lee
Primordial non-Gaussianities (PNGs) are features in the initial density field that provide a window into the nonlinear dynamics of particles during the inflationary epoch. Among th…
Testing halo models for constraining astrophysical feedback with multi-probe modeling: I. 3D Power spectra and mass fractions
Pranjal R. S., Shivam Pandey, Dhayaa Anbajagane +2
Upcoming Stage-IV surveys will deliver measurements of distribution of matter with unprecedented precision, demanding highly accurate theoretical models for cosmological parameter…
Primordial Physics in the Nonlinear Universe: signatures of inflationary resonances, excitations, and scale dependence
Dhayaa Anbajagane, Hayden Lee
Primordial non-Gaussianities (PNGs) are imprints in the initial density field sourced by the dynamics of inflation. These dynamics can induce scale dependence, oscillations, and ot…
Simulation-based inference with the integrated 3PCF
David Gebauer, Anik Halder, Stella Seitz +1
We present , a simulation-based inference (SBI) framework for analysing a higher-order weak lensing statistic, the integrated 3-point correlation function (i3PCF)…