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Des modèles de transition de phase en économie ?

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  • Irène Hors

Abstract

[fre] Ce travail propose une réflexion sur les applications économiques des modè­les de transition de phase, modèles qui permettent d'établir un lien entre phéno­mènes collectifs et comportements individuels au travers d'un jeu d'interaction. Dans ce but, le mécanisme invoqué est exposé simplement mais précisément, à l'aide des formalismes utilisés, révélant les hypothèses nécessaires sur les comportements individuels qui lui sont fondamentales. Ces hypothèses apparais­sent alors plus ou moins justifiées selon les contextes d'application, remettant parfois en cause la pertinence de ces modèles à l'égard des problèmes étudiés. Nous évoquons ensuite le risque de recours trop hâtif à ces modèles et nous suggérons enfin des modalités d'exploitation trop peu développées. [eng] Transition phase models in economics ?. . This paper deals with the economic application of phase transition models, models which relate collective phenomena to individuel behaviours, through a process of interaction. For this purpose, the mechanism in question is exposed in a simple but precise way, in reference to the different formalisation tools which are used, revealing the necessary underlying assumptions on individual behaviour. These assumptions turn out to be more or less easy to justify according to the economic context, putting into question the appropriateness of these models to the considered problems. Then, we mention the risk of refering too quickly to these models and we finally propose on the contrary some possibilities of development that should be further explored.

Suggested Citation

  • Irène Hors, 1995. "Des modèles de transition de phase en économie ?," Revue Économique, Programme National Persée, vol. 46(3), pages 817-826.
  • Handle: RePEc:prs:reveco:reco_0035-2764_1995_num_46_3_409693
    DOI: 10.3406/reco.1995.409693
    Note: DOI:10.3406/reco.1995.409693
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    References listed on IDEAS

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    1. Steven N. Durlauf, 1993. "Nonergodic Economic Growth," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 60(2), pages 349-366.
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    1. Kosfeld, Michael, 2005. "Rumours and markets," Journal of Mathematical Economics, Elsevier, vol. 41(6), pages 646-664, September.
    2. Jérome VICENTE (GRES-LEREPS), 2003. "From interaction economics to economic geography : theories and evidences (In French)," Cahiers du GRES (2002-2009) 2003-02, Groupement de Recherches Economiques et Sociales.

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