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Louison Aubert
n° 26-1725, mars 2026
We consider the global optimization of a non-convex potential U : Rd → R and ex tend the controlled simulated annealing framework introduced in [31] to the class of swarm gradient dynamics, a family of Langevin-type mean-field diffusions whose noise intensity depends locally on the marginal density...
Bruno Biais, Hans Gersbach, Jean-Charles Rochet et Stéphane Villeneuve
n° 26-1724, mars 2026
This paper studies the efficient allocation of capital and consumption in a production economy with many agents, private information, and aggregate risk. It extends the influential work of Andrew Atkeson and Robert E. Lucas Jr. (1992), who analyzed a related problem in an exchange economy. In a...
Renaud Bourlès, Jérémy Laurent-Lucchetti et Jean-Charles Rochet
n° 26-1723, mars 2026
More than a decade after COP21, carbon emission trajectories remain far above the 1.5° C threshold, due to lack of international consensus. Departing from cost-benefit approaches, we assess the maximum reduction in carbon emissions that could be accepted by all countries. We characterize the target...
Thi-Huong Trinh, Christine Thomas-Agnan et Michel Simioni
mars 2026
In econometrics, the impact of climate change on agricultural yield has often been modeled using linear functional regression, where crop yield, a scalar response, is regressed on the temperature distribution over a given time period, treated as an ordinary functional parameter, along with other...
Philippe Bontems, Marie-Françoise Calmette et David Martimort
vol. 45, n° 100447, mars 2026
Motivated by the forthcoming terminations of most highways concessions in France, we propose a versatile model of dynamic regulation and contract renewals that describes a long-term relationship between the public authority and an incumbent operator with private information about its costs that may...
Arthur Ribeiro Queiroz, Elton Freitas et João Prates Romero
vol. 76, février 2026, p. 20–43
The objective of this paper is to assess the heterogeneity of employment multipliers between regions and sectors of distinct complexity levels, segmenting regions into four complexity levels and the economy into two sectors: complex and non-complex. Formal labor market data from 558 Brazilian micro...
Pierre Dubois et Ariel Pakes
n° 26-1729, février 2026, révision mai 2026
Direct-to-consumer advertising (DTCA) of prescription drugs may expand treatment access but also risks promoting overuse and business stealing without generating welfare gains. Among developed nations, only the United States and New Zealand permit DTCA, whereas detailing - promotion aimed at...
Marijn Keijzer, Lukas Erhard, Zarine Kharazian et Manika Lamba
février 2026
The impact of YouTube’s recommendation algorithm has been subject to much debate. Case studies and anecdotal evidence have suggested that algorithmic recommendations may lure the platform’s users into informational ‘rabbit holes’ where they are exposed to biased content and misinformation. However...
Marijn Keijzer, Jan Lorenz et Michał Bojanowski
Springer Cham, février 2026
The emergence of Computational Social Science (CSS) marks a transformative shift in the study of social phenomena, triggered by advancements in computational technology and large-scale collection of (digital) behavioral trace data. CSS promises to provide an accurate and deep understanding of...
This is an open access book. What holds societies together—and what drives them apart? As worry over political polarization and social cohesion intensifies across the globe, this volume explores timely and vital questions of social cohesion and polarization through the lens of Computational Social...
