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ESBies: safety in the tranches

Brunnermeier, Markus K. and Langfield, Sam and Pagano, Marco and Reis, Ricardo and Nieuwerburgh, Stijn Van and Vayanos, Dimitri (2016) ESBies: safety in the tranches. CFM discussion paper series, CFM-DP2016-27. Centre For Macroeconomics, London, UK.

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Abstract

It is well known that rational bubbles can be sustained in balanced growth path of a deterministic economy when the return to capital r is equal to the growth rate g. When there is a lack of stores of value, bubbles can implement an e¢ cient allocation. This paper considers a world where r áuctuates over time due to shocks to the marginal productivity of capital. Then, bubbles further e¢ ciency, though they cannot implement Örst best. While bubbles can only be sustained when r = g in a deterministic economy, r > g "on average" in a stochastic economy. Fiscal policy improves welfare by adding an extra asset. Where only the elderly contribute to shifting resources between investment and consumption in a bubbly economy, Öscal policy allows part of that burden to be shifted to the young. Contrary to common wisdom, trade in bubbly assets implements intergenerational transfers, while Öscal policy implements intragenerational transfers. Hence, while bubbles and Öscal policy are perfect substitutes in the deterministic economy, Öscal policy dominates bubbles in a stochastic economy. For plausible parameter values, a higher degree of dynamic ine¢ ciency should lead to a higher sovereign debt.

Item Type: Monograph (Discussion Paper)
Official URL: http://www.centreformacroeconomics.ac.uk/Home.aspx
Additional Information: © 2016 The Authors
Subjects: H Social Sciences > HB Economic Theory
Sets: Research centres and groups > Centre for Macroeconomics
Date Deposited: 12 Dec 2017 14:29
Last Modified: 13 Dec 2017 15:32
URI: http://eprints.lse.ac.uk/id/eprint/86221

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