— We investigate the wealth evolution in a system of agents that exchange wealth through a disordered network in presence of an additive stochastic Gaussian noise. We show that the resulting wealth distribution is shaped by the degree distribution of the underlying network and in particular we verify that scale free networks generate distributions with power-law tails in the high-income region....

In this paper, we investigate the distribution and growth dynamic of individual producer’s aggregated attention wealth in crowd-sourcing phenomenon by mining data from digg. com. We observe that, the distribution of attention wealth deviates from power-law with a peak near the tail. We interpret the deviation with a stochastic model for attention wealth growth incorporating both promotion to fr...

Household wealth and its distribution are topics of broad public debate and increasing scholarly interest. We compare the relative strength of two of the main data sources used in research on the wealth holdings of U.S. households, the Survey of Consumer Finances (SCF) and the Panel Study of Income Dynamics (PSID), by providing a description and explanation of differences in the level and distr...

We explore a simple game-theoretical betting model where players’ bets influence the outcome of a probabilistic game. We find that the dynamics and equilibrium results for these games are quite simple, but the transitory distribution of wealth is interesting. Most econophysics models of wealth distribution use random exchanges. In our model, in contrast, skill accounts for a majority of the wea...

January 2002 Abstract. A convergence model with wealth accumulation subject to i.i.d. random shocks is examined. The transfer function shows what kt+1 wealth at t + 1 would be, given kt, with no shock. It has a positive slope, but its concavity/convexity is indeterminate. The stationary distribution of wealth satis...es a Fredholm integral equation. This distribution can be examined by direct a...

Disagreements about the optimal level of wealth inequality underlie policy debates ranging from taxation to welfare. We attempt to insert the desires of "regular" Americans into these debates, by asking a nationally representative online panel to estimate the current distribution of wealth in the United States and to "build a better America" by constructing distributions with their ideal level ...