Arbitrary initial conditions and the dimension of indeterminacy in linear rational expectations models

Marco Sorge

Decisions in Economics and Finance, 2020, vol. 43, issue 1, No 18, 363-372

Abstract: Abstract Indeterminate equilibrium rational expectations (RE) models are ubiquitous in both theoretical and applied work in dynamic macroeconomics. The issue of characterizing the exact dimension of indeterminacy—i.e. of deriving the full set of causal and stable solutions to linear RE models—has only recently been addressed in the context of general and multivariate settings. This paper complements existing results by identifying bounds on the observable dimension of indeterminacy of linear RE models in the presence of arbitrary initial conditions. Implications for the estimation of indeterminate equilibrium RE models are discussed.

Keywords: Rational expectations; Indeterminacy; Initial conditions (search for similar items in EconPapers)
JEL-codes: C62 E00 (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1007/s10203-019-00269-4

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