Showing papers by "Arnab Chatterjee published in 2004"
TL;DR: In this article, the authors have numerically simulated the ideal-gas models of trading markets, where each agent is identified with a gas molecule and each trading as an elastic or money-conserving two-body collision.
Abstract: We have numerically simulated the ideal-gas models of trading markets, where each agent is identified with a gas molecule and each trading as an elastic or money-conserving two-body collision. Unlike in the ideal gas, we introduce (quenched) saving propensity of the agents, distributed widely between the agents (0⩽λ
297 citations
TL;DR: In this article, the authors considered the ideal gas model of trading markets, where each agent is identified with a gas molecule and each trading an as alastic or money-conserving (two-body) collision.
Abstract: We consider the ideal-gas models of trading markets. where each agent is identified with a gas molecule and each trading an as alastic or money-conserving (two-body) collision. Unlike in the ideal gas. we introduce saving propensity λ of agents, such that each agents saves a fraction λ of its money and trades with the rest. We show the steady-state money or wealth distribution in a market is Gibbs-like for λ=0, has got a non-vanishing most-probable value for λ≠0 and Pareto-like when λ is widely distributed among the agents. Wr compare these results with observations on wealth distributions of various countries
25 citations
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TL;DR: In this paper, the authors have numerically simulated the ideal-gas models of trading markets, where each agent is identified with a gas molecule and each trading as an elastic or money-conserving two-body collision.
Abstract: We have numerically simulated the ideal-gas models of trading markets, where each agent is identified with a gas molecule and each trading as an elastic or money-conserving two-body collision. Unlike in the ideal gas, we introduce (quenched) saving propensity of the agents, distributed widely between the agents ($0 \le \lambda
23 citations
TL;DR: In this paper, the authors discuss dynamic magnetization-reversal phenomena in the Ising model under a finite-duration external magnetic field, which competes with the existing order for.
Abstract: We discuss dynamic magnetization-reversal phenomena in the Ising model under a finite-duration external magnetic field, which competes with the existing order for . The nature of the phase boundary is estimated from the mean-field (MF) equation of motion. The susceptibility and relaxation time diverge at the MF phase boundary. A Monte Carlo study also shows divergence of the relaxation time and order-parameter fluctuations at the phase boundary. The fourth-order cumulant shows two distinct behaviors. For low temperatures and pulse durations, the value of the cumulant at the crossing point for different system sizes is far less than that for the static transition in the same dimension. This suggests a new universality class for the dynamic transition. For higher temperatures and pulse durations, the transition falls in a MF-like weak-singularity universality class.
15 citations