IDEAS home Printed from
   My bibliography  Save this paper

An Alternative Approach to the Existence of Sunspot Equilibria


  • Haim Abraham


This paper offers an alternative approach to the existence of sunspot equilibria. The economy has a single perishable good and fiat money within an overlapping generations framework with two possible extraneous events. The analysis uses the dynamic adjustment of market prices during voluntary trade to establish paths of current spot prices whose limit points are rational expectations equilibria. The paper shows that there is a sub-set of paths whose limit points are self-fulfilling if they are perfectly correlated with extraneous events. It is this sub-set that constitutes sunspot equilibria. Two implications of this approach follow: (a) the likelihood of this existence is generally low; and (b) adding an asset (or a commodity) to the economy invalidates the demonstration of existence.

Suggested Citation

  • Haim Abraham, 2005. "An Alternative Approach to the Existence of Sunspot Equilibria," Working Papers 34, Economic Research Southern Africa.
  • Handle: RePEc:rza:wpaper:34

    Download full text from publisher

    File URL:
    Download Restriction: no

    References listed on IDEAS

    1. Bernheim, B Douglas, 1984. "Rationalizable Strategic Behavior," Econometrica, Econometric Society, vol. 52(4), pages 1007-1028, July.
    2. Vives, Xavier, 1990. "Nash equilibrium with strategic complementarities," Journal of Mathematical Economics, Elsevier, vol. 19(3), pages 305-321.
    3. Bulow, Jeremy I & Geanakoplos, John D & Klemperer, Paul D, 1985. "Multimarket Oligopoly: Strategic Substitutes and Complements," Journal of Political Economy, University of Chicago Press, vol. 93(3), pages 488-511, June.
    4. Vives, Xavier, 2004. "Complementarities and Games: New Developments," CEPR Discussion Papers 4742, C.E.P.R. Discussion Papers.
    Full references (including those not matched with items on IDEAS)

    More about this item


    Sunspot equilibria; extrinsic uncertainty; dynamic stability;

    JEL classification:

    • D00 - Microeconomics - - General - - - General
    • D50 - Microeconomics - - General Equilibrium and Disequilibrium - - - General
    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:rza:wpaper:34. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Charles Tanton). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.