Countercyclical Dispersion of Price Changes: Causes and Implications, July 2022 

Countercyclical dispersion of price changes is caused by diverging price adjustment between goods of different quality.

The (Unequal) Rise of Market Power, Nominal Rigidities and Monetary Non-neutrality, March  2023

with Christian Höynck and Donghai Zhang 

The rising markup has led to a 30% increase in the degree of monetary non-neutrality

Optimal Monetary Policy with Asymmetric Shocks and Rational Inattention, New Draft Coming Soon 

With Ho-Mou Wu

We propose a revised price index for the central bank to stabilize.