My primary research interests are in the formulation of dynamic equilibrium models, their efficient computation, and their estimation. However, I have also worked on issues related to economic history and political economy.

Below you can get pdf copies of my papers and codes for reproducing some of the computations involved.

New Items

August 12 , 2020. An updated version of my paper "Estimating and Simulating a SIRD Model of COVID-19 for Many Countries, States, and Cities" with Chad Jones can be found here.

August 12, 2020. My paper "Estimating DSGE Models: Recent Advances and Future Challenges" with Pablo Guerrón-Quintana can be found here.

July 5, 2020. An updated version of my paper "The Fractured-Land Hypothesis" with Mark Koyama, Youhong Lin, and Tuan-Hwee Sng can be found here. Also, a 15 minutes video summarizing the paper can be found here and below:

July 5, 2020. An updated version of my paper "Safe Assets" with with Robert Barro, Oren Levintal, and Andrew Mollerus can be found here.

May 29, 2020. My paper "Deciphering the Macroeconomic Effects of Internal Devaluations in a Monetary Union" with Javier Andrés, Óscar Arce, and Samuel Hurtado can be found here.

April 1, 2020. My paper "Central Bank Digital Currency: when Price and Bank Stability Collide" with Daniel Sanches, Linda Schilling, and Harald Uhlig can be found here.

February 16, 2020. An updated version of my paper "Financial Frictions and the Wealth Distribution" with Galo Nuño and Samuel Hurtado can be found here. The slides are here.

February 12, 2020. My paper "Simple Rules for a Complex World with Artificial Intelligence" can be found here. The slides are here.

February 7, 2020. My paper "Uncertainty Shocks and Business Cycle Research" with Pablo Guerrón-Quintana can be found here.

January 21, 2020. My paper "Central Bank Digital Currency: Central Banking For All?" with Daniel Sanches, Linda Schilling, and Harald Uhlig can be found here. A VoxEU column summarizing the main ideas of the paper here.

August 12, 2019. An updated version of my paper "Search Complementarities, Aggregate Fluctuations, and Fiscal Policy" with Federico Mandelman, Yang Yu, and Francesco Zanetti can be found here.

March 20, 2019. My paper "Demographic Transitions Across Time and Space" with Matthew J. Delventhal and Nezih Guner can be found here.

October 9, 2018. We updated our paper "A Practical Guide to Parallelization in Economics" here to include the new Julia 1.0 parallelization syntax. The Github repository: here is also updated.

September 15, 2018. An interview about my research published at Econ Focus, from the Federal Reserve Bank of Richmond, can be found here.

September 11, 2018. The paper "Cryptocurrencies: A Crash Course in Digital Monetary Economics" can be found here. Una traducción al español aquí.

August 27, 2018. A new paper "The Lack of European Productivity Growth: Causes and Lessons for the U.S." with Lee Ohanian can be found here.

April 22, 2018. A new paper "A Practical Guide to Parallelization in Economics" here. An easy-to-follow guide of what you need to know to start coding in parallel in economics. It comes with a Github repository: here. Download and fork the codes!

March 22, 2018. An update on the computations on "A Comparison of Programming Languages" here with the results for new versions of each language. Bottom line: Matlab and R have improved a lot, Python is still awful, and Julia rocks!

February 10, 2018. A short paper on the economics of minimum wage regulations here.


Solution and Estimation Methods for DSGE Models

Joint with Juan Rubio-Ramírez and Frank Schorfheide.


The New Macroeconometrics: A Bayesian Approach

Joint with Pablo Guerrón-Quintana and Juan F. Rubio-Ramírez.


Estimating and Simulating a SIRD Model of COVID-19 for Many Countries, States, and Cities

Joint with Chad Jones.


Deciphering the Macroeconomic Effects of Internal Devaluations in a Monetary Union

Joint with Javier Andrés, Óscar Arce, and Samuel Hurtado.


Uncertainty Shocks and Business Cycle Research

Joint with Pablo Guerrón-Quintana.


Central Bank Digital Currency: when Price and Bank Stability Collide

Joint with Daniel Sanches, Linda Schilling, and Harald Uhlig.


Central Bank Digital Currency: Central Banking For All?

Joint with Daniel Sanches, Linda Schilling, and Harald Uhlig.


Demographic Transitions Across Time and Space

Joint with Matthew J. Delventhal and Nezih Guner.


Search Complementarities, Aggregate Fluctuations, and Fiscal Policy

Joint with Federico Mandelman, Yang Yu, and Francesco Zanetti.


Financial Frictions and the Wealth Distribution

Joint with Galo Nuño and Samuel Hurtado.


Political Distribution Risk and Aggregate Fluctuations

Joint with Thorsten Drautzburg and Pablo Guerrón-Quintana.


Safe Assets

Joint with Robert Barro, Oren Levintal, and Andrew Mollerus.


Can Currency Competition Work?

Joint with Daniel Sanches.

A short companion paper summarizing some of the findings can be found here


Cryptocurrencies: A Crash Course in Digital Monetary Economics


Optimal Capital Versus Labor Taxation with Innovation-Led Growth

Joint with Philippe Aghion and Ufuk Akcigit.


Nonlinear Adventures at the Zero Lower Bound

Joint with Grey Gordon, Pablo Guerrón-Quintana, and Juan Rubio-Ramírez.


Supply-Side Policies and the Zero Lower Bound

Joint with Pablo Guerrón-Quintana and Juan Rubio-Ramírez.


Fiscal Volatility Shocks and Economic Activity

Joint with Keith Kuester, Pablo Guerrón-Quintana and Juan Rubio-Ramírez.


Reading the Recent Monetary History of the U.S., 1959-2007

Joint with Pablo Guerrón-Quintana and Juan Rubio-Ramírez.


A Review Sesssion for Monetary and Fiscal Policy


Macroeconomics and Volatility: Data, Models, and Estimation

Joint with Juan Rubio-Ramírez.


Fortune or Virtue: Time-Variant Volatilities Versus Parameter Drifting in U.S. Data

Joint with Pablo Guerrón-Quintana and Juan Rubio-Ramírez.


The Term Structure of Interest Rates in a DSGE Model with Recursive Preference

Joint with Jules van Binsbergen, Ralph Koijen, and Juan Rubio-Ramírez.


Fiscal Policy in a Model with Financial Frictions.

An extended version of the model can be found here.


Risk Matters: The Real Effects of Volatility Shocks

Joint with Pablo Guerrón-Quintana, Juan F. Rubio-Ramírez, and Martin Uribe.


From Shame to Game in One Hundred Years: An Economic Model of the Rise in Pre-marital Sex and its De-Stigmatization

Joint with Jeremy Greenwood and Nezih Guner.


A,B,C's (and D)'s for Understanding VARs

Joint with Juan F. Rubio-Ramírez, Tom Sargent, and Mark Watson.

The older (and longer) working paper version is here.


Life-Cycle Consumption, Debt Constraints and Durable Goods

Joint with Dirk Krueger.


Consumption over the Life Cycle: Facts from Consumer Expenditure Survey Data

Joint with Dirk Krueger.

here you can find the technical appendix of the paper with further details about our estimation.


Optimal Fiscal Policy in a Business Cycle Model without Commitment (incomplete draft)

Joint with Aleh Tsyvinski.


Was Malthus Right? Economic Growth and Population Dynamics

Some Further Notes on "Was Malthus Right? Economic Growth and Population Dynamics"

These notes present further discussion of several aspects of "Was Malthus Right? Economic Growth and Population Dynamics". They should be read following each particular section of the main paper.


Can We Really Observe Hyperbolic Discounting?

Joint with the late Arijit Mukherji.


Evaluating Labor Market Reforms: A General Equilibrium Approach

Joint with Cesar Alonso-Borrego and Jose E. Galdon.


On the Solution of the Growth Model with Investment-Specific Technological Change

Joint with Juan F. Rubio-Ramírez.


A Practical Guide to Parallelization in Economics

Joint with David Zarruk Valencia.

Github repository: here


Comparing Solution Methods for Dynamic Equilibrium Economies

Joint with S. Boragan Aruoba and Juan F. Rubio-Ramírez.

Click on this link to go to the companion web page where you can find the codes used in this paper.


Solution Methods for Models with Rare Disasters

Joint with Oren Levintal.

Companion code here.


A Comparison of Programming Languages in Economics

Joint with S. Boragan Aruoba.

The original paper has a short update (2018) with some new running times here.

Click on this link to go to the github repository for the codes used in this paper. Note that in the repository we have codes for many other programming languages such as JavaScript.


Tapping the Supercomputer Under Your Desk: Solving Dynamic Equilibrium Models with Graphics Processors

Joint with Eric Aldrich, Ron Gallant, and Juan Rubio-Ramírez


Computing DSGE Models with Recursive Preferences and Stochastic Volatility

Joint with Dario Caldara, Juan F. Rubio-Ramírez, and Yao Wen.


Solving DSGE Models with Perturbation Methods and a Change of Variables

Joint with Juan F. Rubio-Ramírez.

Mathematica Notebook to compute the optimal change of variables.


A Generalization of the Endogenous Grid Method

Joint with Francisco Barillas.

Fortran Code to compute the models describe in the paper using the Endogenous Grid Method and Value function iteration.


Our Research Agenda: Estimating DSGE Models

Joint with Juan F. Rubio-Ramírez.

This note, which appears in the newsletter of the Review of Economic Dynamics, fall 2006, describes our agenda on the estimation of DSGE Models. We discuss our different papers and explain how they fit together.


"Estimating DSGE Models: Recent Advances and Future Challenges"

Joint with Pablo Guerrón.

A technical appendix is here.


The Pruned State-Space System for Non-Linear DSGE Models: Theory and Empirical Applications

Joint with Martin Andreasen and Juan F. Rubio-Ramírez.

A detailed technical appendix is here. Codes for Dynare 4.4: here.


The Econometrics of DSGE Models


MEDEA: A DSGE Model for the Spanish Economy

Joint with Pablo Burriel and Juan F. Rubio-Ramírez.


Estimating Macroeconomic Models: A Likelihood Approach

Joint with Juan F. Rubio-Ramírez.

The technical appendix offers further details in some aspects of the paper.


Sequential Monte Carlo Filtering: an Example

here you can find a simple example of how to use a Sequential Monte Carlo to evaluate the likelihood function of a nonlinear and non-normal process.


Estimating Dynamic Equilibrium Economies: Linear versus Nonlinear Likelihood

Joint with Juan F. Rubio-Ramírez.


How Structural Are Structural Parameter Values?

Joint with Juan F. Rubio-Ramírez.


Convergence Properties of the Likelihood of Computed Dynamic Models

Also, NBER Working Paper version, with more details.

Joint with Juan F. Rubio-Ramírez and Manuel Santos.


Horizons of Undertanding


Simple Rules for a Complex World with Artificial Intelligence


The Economics of Minimum Wage Regulations


The Economic Consequences of Labor Market Regulations


The Fractured-Land Hypothesis

Joint with Mark Koyama, Youhong Lin, and Tuan-Hwee Sng.


Magna Carta, the Rule of Law, and the Limits on Government


Health Care (a proposal for reform, published in "The Thriving Society: On The Social Conditions of Human Flourishing").


An interview about my views of the relation between economics and history that came out in Politikon (sorry, in Spanish).