Using a simple stochastic growth model, this paper demonstrates that the coefficient of variation of aggregate output or GDP does not necessarily go to zero even if the number of sectors or economic agents goes to infinity. This phenomenon known as non-self-averaging implies that even if the...

We show how time-dependent macroeconomic response follows from microeconomic dynamics using linear response theory and a time-correlation formalism. This theory provides a straightforward approach to time-dependent macroeconomic model construction that preserves the heterogeneity and complex...

We show how time-dependent macroeconomic response follows from microeconomic dynamics using linear response theory and a time-correlation formalism. This theory provides a straightforward approach to time-dependent macroeconomic model construction that preserves the heterogeneity and complex...

Introduction to the volume by Alan Kirman -- Part I Finitary methods of statistical equilibrium -- 1.Enrico Scalas, University of Sussex, “Continuum and thermodynamic limits for a wealth -- distribution stylised model” -- 2. Doyn Farmer Oxford University, Mauro Galegatti, Corrado di Guilumi...

This paper presents a new theory of bubbles, or discrepancies between the market clearing price and the fundamental value of an asset. In the authors' setting, Bayesian traders, oriented towards long-term gains, receive private information ("news") and also make inferences from noisy price...