2 papers
astro-ph.CO2025
Separate universe in multifield inflation: a phase-space approach
Julien Grain, Hugo Holland
In this article we extend a study of the validity conditions of the separate-universe approach of cosmological perturbations to models of inflation with multiple fields. The separa…
econ.GN2021
Simple Diagnostics for Two-Way Fixed Effects
Pamela Jakiela
Difference-in-differences estimation is a widely used method of program evaluation. When treatment is implemented in different places at different times, researchers often use two-…