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Monetary policy for a bubbly world

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Abstract

We propose a model of money, credit and bubbles, and use it to study the role of monetary policy in managing asset bubbles. In this model, bubbles pop up and burst, generating fluctuations in credit, investment and output. Two key insights emerge from the analysis. First, the growth rate of bubbles, which is driven by agents' expectations, can be set in real or in nominal terms. This gives rise to a novel channel of monetary policy, as changes in the in ation rate affect the real growth rate of bubbles and their effect on economic activity. Crucially, this channel does not rely on contract incompleteness or price rigidities. Second, there is a natural limit on monetary policy's ability to control bubbles: the zero-lower bound. When a bubble crashes, the economy may enter into a liquidity trap, a regime in which agents shift their portfolios away from bubbles - and the credit that they sustain - to money, reducing intermediation, investment and growth. We explore the implications of the model for the conduct of "conventional" and "unconventional" monetary policy, and we use the model to provide a broad interpretation of salient macroeconomic facts of the last two decades.

Suggested Citation

  • Vladimir Asriyan & Luca Fornaro & Alberto Martin & Jaume Ventura, 2016. "Monetary policy for a bubbly world," Economics Working Papers 1533, Department of Economics and Business, Universitat Pompeu Fabra.
  • Handle: RePEc:upf:upfgen:1533
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    References listed on IDEAS

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    1. Gianluca Benigno & Luca Fornaro, 2018. "Stagnation Traps," Review of Economic Studies, Oxford University Press, vol. 85(3), pages 1425-1470.
    2. Gauti B. Eggertsson & Neil R. Mehrotra, 2014. "A Model of Secular Stagnation," NBER Working Papers 20574, National Bureau of Economic Research, Inc.
    3. Jordi Galí & Luca Gambetti, 2015. "The Effects of Monetary Policy on Stock Market Bubbles: Some Evidence," American Economic Journal: Macroeconomics, American Economic Association, vol. 7(1), pages 233-257, January.
    4. Philippe Bacchetta & Kenza Benhima & Yannick Kalantzis, 2016. "Money and Capital in a Persistent Liquidity Trap," Cahiers de Recherches Economiques du Département d'Econométrie et d'Economie politique (DEEP) 16.12, Université de Lausanne, Faculté des HEC, DEEP.
    5. Claudio Borio & Craig Furfine & Philip Lowe, 2001. "Procyclicality of the financial system and financial stability: issues and policy options," BIS Papers chapters,in: Bank for International Settlements (ed.), Marrying the macro- and micro-prudential dimensions of financial stability, volume 1, pages 1-57 Bank for International Settlements.
    6. Pierre-Olivier Gourinchas & Hélène Rey, 2016. "Real Interest Rates, Imbalances and the Curse of Regional Safe Asset Providers at the Zero Lower Bound," NBER Working Papers 22618, National Bureau of Economic Research, Inc.
    7. Rachel, Lukasz & Smith, Thomas, 2015. "Secular drivers of the global real interest rate," Bank of England working papers 571, Bank of England.
    8. Michael D. Bordo & Michael J. Dueker & David C. Wheelock, 2008. "Inflation, Monetary Policy and Stock Market Conditions," NBER Working Papers 14019, National Bureau of Economic Research, Inc.
    9. Felipe S. Iachan & Plamen T. Nenov & Alp Simsek, 2015. "The Choice Channel of Financial Innovation," NBER Working Papers 21686, National Bureau of Economic Research, Inc.
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    Blog mentions

    As found by EconAcademics.org, the blog aggregator for Economics research:
    1. Monetary policy for a bubbly world
      by Christian Zimmermann in NEP-DGE blog on 2016-10-21 18:53:58

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    Cited by:

    1. Alberto Martin & Jaume Ventura, 2017. "The macroeconomics of rational bubbles: a user's guide," Economics Working Papers 1581, Department of Economics and Business, Universitat Pompeu Fabra.
    2. Gianluca Benigno & Luca Fornaro, 2018. "Stagnation Traps," Review of Economic Studies, Oxford University Press, vol. 85(3), pages 1425-1470.
    3. Jordi Galí, 2016. "Monetary policy and bubbles in a new Keynesian model with overlapping generations," Economics Working Papers 1561, Department of Economics and Business, Universitat Pompeu Fabra, revised Dec 2017.
    4. Eggertsson, Gauti B. & Mehrotra, Neil & Robbins, Jacob A., 2017. "A Model of Secular Stagnation: Theory and Quantitative Evaluation," Working Papers 742, Federal Reserve Bank of Minneapolis.
    5. Keshav Dogra & Sushant Acharya, 2017. "The Side Effects of Safe Asset Creation," 2017 Meeting Papers 1453, Society for Economic Dynamics.
    6. Pengfei Wang & Jianjun Miao & Feng Dong, 2017. "Asset Bubbles and Monetary Policy," 2017 Meeting Papers 205, Society for Economic Dynamics.
    7. Biswas, Siddhartha & Hanson, Andrew & Phan, Toan, 2018. "Bubbly Recessions," Working Paper 18-5, Federal Reserve Bank of Richmond.
    8. Hanson, Andrew & Phan, Toan, 2017. "Bubbles, wage rigidity, and persistent slumps," Economics Letters, Elsevier, vol. 151(C), pages 66-70.

    More about this item

    Keywords

    bubbles; monetary policy; liquidity traps; financial frictions.;

    JEL classification:

    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • O40 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General

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