Hydrodynamics from Kinetic Models of Conservative Economies

Hydrodynamics from Kinetic Models of Conservative Economies
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保守经济动力学模型中的流体动力学

DOI:
10.1016/j.physa.2007.05.062
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发表时间:
2007
影响因子:
3.3
通讯作者:
G. Toscani
G. Toscani
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
B. Düring;G. Toscani

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在本文中,我们介绍并讨论了保守经济动力学模型的流体动力学方程,其中财富密度取决于其他参数,如投资倾向。在稀薄气体的动力学理论中,封闭依赖于基本动力学模型的均匀稳定财富分布(麦克斯韦)的知识。这里使用的碰撞算符是由J. P. Bouchaud和M. Mezard [Wealth condensation in a simple model of economy,Physica A 282(2000)536-545],最近S.科迪尔湖,澳-地Pareschi和作者之一[S.科尔迪耶湖Pareschi,G. Toscani,On a kinetic model for a simple market economy,J. Stat. 120(2005)253-277]。流体方程的数值模拟,然后提出和分析的各种法律的变化的倾向。
In this paper, we introduce and discuss the passage to hydrodynamic equations for kinetic models of conservative economies, in which the density of wealth depends on additional parameters, like the propensity to invest. As in kinetic theory of rarefied gases, the closure depends on the knowledge of the homogeneous steady wealth distribution (the Maxwellian) of the underlying kinetic model. The collision operator used here is the Fokker–Planck operator introduced by J.P. Bouchaud and M. Mezard [Wealth condensation in a simple model of economy, Physica A 282 (2000) 536–545], which has been recently obtained in a suitable asymptotic of a Boltzmann-like model involving both exchanges between agents and speculative trading by S. Cordier, L. Pareschi and one of the authors [S. Cordier, L. Pareschi, G. Toscani, On a kinetic model for a simple market economy, J. Stat. Phys. 120 (2005) 253–277]. Numerical simulations on the fluid equations are then proposed and analyzed for various laws of variation of the propensity.
DOI: 10.1016/s0378-4371(00)00386-1
发表时间: 2000-12-01
影响因子: 3.3
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