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Nonlinear Phenomena in a Growing Economy with Convex Adjustment Costs

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  • Pedro de Mendonça

Abstract

We discuss the implications of nonlinear dynamic phenomena for policy definition in a growing economy. De- parting from the hypothesis that local analysis of economic systems focus the definition of policy on short run outcomes, we propose that to have a clearer perspective on long run outcomes, we have to focus the analysis on the study of local bifurcations and global dynamics instead. This approach, in our opinion, provides a better insight on complex macroeconomic phenomena and allows for a better definition of policy rules in a long run horizon. To demonstrate this hypothesis, we set up a representative agent economy based on neoclassical assumptions, where agents face convex risk premium and investment adjustment costs. This economy describes an endogenous opti- mal growth model, that has solutions given by a nonlinear three-dimensional dynamical system. To evaluate this system, we resort to qualitative analysis methods and show the existence of fold (saddle-node), hopf and fold-hopf bifurcations, in a multiple equilibria environment. Numerical results suggest the absence of local stable solutions for a wide range of parameter values. We then focus our analysis on the complex organization of the economy phase-space and evaluate several conjectures related to the existence of complex nonlinear phenomena in the vicinity of fold-hopf bifurcation points. We relate these conjectures with the hypothesis of endogenous structural change and discuss the implications of complex global dynamic phenomena for long run policy definition.

Suggested Citation

  • Pedro de Mendonça, 2013. "Nonlinear Phenomena in a Growing Economy with Convex Adjustment Costs," EERI Research Paper Series EERI RP 2013/05, Economics and Econometrics Research Institute (EERI), Brussels.
  • Handle: RePEc:eei:rpaper:eeri_rp_2013_05
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    References listed on IDEAS

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    Keywords

    Nonlinear Growth Dynamics; Financial Instability; Fold-Hopf Bifurcation.;

    JEL classification:

    • O16 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Financial Markets; Saving and Capital Investment; Corporate Finance and Governance
    • O47 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - Empirical Studies of Economic Growth; Aggregate Productivity; Cross-Country Output Convergence
    • G23 - Financial Economics - - Financial Institutions and Services - - - Non-bank Financial Institutions; Financial Instruments; Institutional Investors

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