Microeconomic structure determines macroeconomic dynamics: Aoki defeats the representative agent

Sorin Solomon1, Nataša Golo1
1Racah Instutute of Physics, The Hebrew University Jerusalem, Jerusalem, Israel

Tóm tắt

Masanao Aoki developed a new methodology for a basic problem of economics: deducing rigorously the macroeconomic dynamics as emerging from the interactions of many individual agents. This includes deduction of the fractal/intermittent fluctuations of macroeconomic quantities from the granularity of the mezo-economic collective objects (large individual wealth, highly productive geographical locations, emergent technologies, emergent economic sectors) in which the micro-economic agents self-organize. In particular, we present some theoretical predictions, which also met extensive validation from empirical data in a wide range of systems: This unification within the same theoretical framework of short term market fluctuations and long term economic cycles offers the perspective of a genuine conceptual synthesis between micro- and macroeconomics. Joining another giant of contemporary science—Phil Anderson 1972—Aoki emphasized the role of rare, large fluctuations in the emergence of macroeconomic phenomena out of microscopic interactions and in particular their non self-averaging, in the language of statistical physics. In this light, we present a simple stochastic multi-sector growth model.

Tài liệu tham khảo

Anderson PW (1972) More is different. Science 177(4047):393–396 Aoki M (2004) New frameworks for macroeconomic modelling: some illustrative examples. UCLA Economics Online Papers Aoki M (1968) Control of large-scale dynamic systems by aggregation. Autom IEEE Trans Autom Control AC–13(3):246–253 Aoki M, Hawkins RJ (2010) Non-self-averaging and the statistical mechanics of endogenous macroeconomic fluctuations. Econ Model 27:1543–1546 Aoki M, Yoshikawa H (1999) Demand creation and economic growth. University of Tokio, Tokio Aoki M, Yoshikawa H (2009) The nature of equilibrium in macroeconomics: a critique of equilibrium search theory. Econ Open-Access Open Assess E J 3(2009–37):1–9 Aoki M, Yoshikawa H (2012) Non-self-averaging in macroeconomic models: a criticism of modern micro-founded macroeconomics. J Econ Interact Coord 7:1–22 Barro RJ, Xavier S-M (1991) Convergence across states and regions. Econ Growth Center Papers Econ Activ 1:107–158 Biham O, Malcai O, Levy M, Solomon S (1998) Generic emergence of power law distributions and Lévy-Stable intermittent fluctuations in discrete logistic systems. Phys Rev E 58(2):1352 Blank A, Solomon S (2000) Power laws in cities population, financial markets and internet sites (scaling in systems with a variable number of components). Phys A Stat Mech Appl 287(1):279–288 Bouchaud J-P, Mézard M (2000) Wealth condensation in a simple model of economy. Phys A Stat Mech Appl 282(3):536–545 Cantono S, Solomon S (2010) When the collective acts on its components: economic crisis autocatalytic percolation. N J Phys 12(7):075038 Challet D, Solomon S, Yaari G (2009) The universal shape of eco-nomic recession and recovery after a shock. Econ Open-Access Open Assess E J 3 (2009-36). http://www.economics-ejournal.org/economics/journalarticles/2009-36 Delli G, Gaffeo E, Gallegati M, Giulioni G, Palestrini A (2008) Emergent macroeconomics: an agent-based approach to business fluctuations. Springer, New York Dosi G (2011) Economic coordination and dynamics: some elements of an alternative ‘Evolutionary’ Paradigm. Institute for New Economic Thinking (downloaded from http://ineteconomics.org/blog/inet/giovanni-dosi-response-john-kay-elements-evolutionary-paradigm on 3 Feb 2012 Dover Y, Moulet S, Solomon S, Yaari G (2009) Do all economies grow equally fast? Risk Decis Anal 1(3):171–185 Gabaix X (2011) The granular origins of aggregate fluctuations. Econometrica 79:733–772 Haim L, Levy M, Solomon S (2000) Microscopic simulation of financial markets: from investor behavior to market phenomena. Academic Press, London Hidalgo CA, Bailey K, Barabási A-L, Hausmann R (2007) The product space conditions the development of nations. Science 317(5837):482–487 Huang Z-F, Solomon S (2001) Finite market size as a source of extreme wealth inequality and market instability. Phys A Stat Mech Appl 294(3):503–513 Huang Z-F, Solomon S (2001) Power, Levy, exponential and Gaussian-like regimes in autocatalytic financial systems. Eur Phys J B Condens Matter Complex Syst 20(4):601–607 Karl P (1976) Unended quest: an intellectual autobiography. Open Court, LaSalle Kesten H, Sidoravicius V (2003) Branching random walk with catalysts. Electron J Probab 8:1–51 Kirman AP (1992) Whom or what does the representative individual represent? J Econ Perspect 6(2): 117–136 Klass OS, Biham O, Levy M, Malcai O, Solomon S (2006) The Forbes 400 and the Pareto wealth distribution. Econ Lett 90(2):290–295 Klass OS, Biham O, Levy M, Malcai O, Solomon S (2007) The Forbes 400, the Pareto power-law and efficient markets. Eur Phys J B 55(2):143–147 Lee K, Hashem PM, Smith RP (1997) Growth and convergence in a multi-country empirical stochastic Solow model. J Appl Econ 12(4):357–392 Leontief W (1947) Introduction to a theory of the internal structure of functional relationships. Econ J Econ Soc 15(4):361–373 Louzoun Y, Solomon S, Goldenberg J, Mazursky D (2003) World-size global markets lead to economic instability. Artif Life 9(4):357–370 Louzoun Y, Shnerb NM, Solomon S (2007) Microscopic noise, adaptation and survival in hostile environments. Eur Phys J B 56(2):141–148 Malcai O, Biham O, Solomon S (1999) Power-law distributions and Levy-stable intermittent fluctuations in stochastic systems of many autocatalytic elements. Phys Rev E 60(2):1299 Malthus T (1798) An essay on the principle of population as it affects the future improvement of society, with remarks on the apeculations of Mr. Godwin, M. Condorcet, and Other Writers 1798. J. Johnson, in St. Paul’s Church-yard, London Mandelbrot BB (1982) The fractal geometry of nature. W. H. Freeman, New York Mankiw GN (2006) Principles of economics, 4th edn. South-Western College Pub. ISBN 0-324-22472-9 Mantegna RN, Stanley EH (1999) Introduction to econophysics: correlations and complexity in finance. Cambridge University Press, Cambridge Marsili M, Maslov S, Zhang Y-C (1998) Dynamical optimization theory of a diversified portfolio. Phys A Stat Mech Appl 253(1):403–418 Montroll EW (1978) Social dynamics and the quantifying of social forces. Proc Natl Acad Sci 75(10):4633–4637 Pammolli F (2013) On innovation, instability, and growth. A review and an interpretative framework economia Politica, n. 1. In: Originally presented at the Fondazione Centesimus Annus—Pro Pontifice, 20th Anniversary international conference: rethinking solidarity for employment: the challenges of the twenty-first century, Rome and The Vatican, May 23–25 Philippe A, Howitt PW (1997) The economics of growth The MIT Press, Cambridge Romer PM (1968) Increasing returns and long-run growth. IEEE Trans J Polit Control 13(3):246–253 (Economy 1986:1002–1037) Romer PM (1989) Endogenous technological change. No. w3210. National Bureau of Economic Research, working paper Romer PM (1990) Endogenous technological change. J Polit Econ 98(5):S71–S102 Schumpeter JA (1936) The theory of economic development. Harvard University Press, Cambridge Shnerb NM, Louzoun Y, Bettelheim E, Solomon S (2000) The importance of being discrete: life always wins on the surface. Proc Natl Acad Sci 97(19):10322–10324 Solomon S (1998) Stochastic Lotka-Volterra systems of competing auto-catalytic agents lead generically to truncated pareto power wealth distribution, Truncated Levy-Stable Intermittent market returns, clustered volatility, booms and crashes. In Decision Technologies for Computational Finance. Springer, USA, pp 73–86 Solomon S, Golo N (2013) Minsky financial instability, interscale feedback, percolation and Marshall-Walras disequilibrium. Acc Econ Law 3(3):167–260 Solomon S, Levy M (1996) Spontaneous scaling emergence in generic stochastic systems. Int J Modern Phys C 7(05):745–751 Solomon S, Levy M (2003) Pioneers on a new continent: on physics and economics. Quant Financ 3(1):c12–c15 Solomon S, Richmond P (2001) Power laws of wealth, market order volumes and market returns. Phys A Stat Mech Appl 299(1):188–197 Solow RM (1956) A contribution to the theory of economic growth. Quart J Econ 70(1):65–94 Verhulst P-F (1838) Notice sur la loi que la population poursuit dans son accroissement. Correspondance mathématique et physique 10:113–121 Von Hayek, Friedrich A (1937) Economics and knowledge. Economica 4(13):33–54 Yaari G, Nowak A, Rakocy K, Solomon S (2008) Microscopic study reveals the singular origins of growth. Eur Phys J B Condens Matter Complex Syst 62(4):505–513 Zel’Dovich YAB, Molchanov SA, Ruzmaĭkin AA, Dmitrii D. Sokolov ((1987)) Intermittency in random media. Soviet Phys Uspekhi 30(5):353