Utility Maximization with Addictive Consumption Habit Formation in Incomplete Semimartingale Markets
AbstractThis paper studies the problem of continuous time expected utility maximization of consumption together with addictive habit formation in general incomplete semimartingale markets. Introducing the set of auxiliary state processes and the modified dual space, we embed our original problem into an abstract time-separable utility maximization problem with a shadow random endowment on the product space. We establish existence and uniqueness of the optimal solution using convex duality by defining the primal value function as depending on two variables, i.e., the initial wealth and the initial standard of living. We also provide market independent sufficient conditions both on the stochastic discounting processes and on the utility function for the well-posedness of our original optimization problem. Under the same assumptions, we can carefully modify the classical proofs in the approach of convex duality analysis when the auxiliary dual process is not necessarily integrable.
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Bibliographic InfoPaper provided by arXiv.org in its series Papers with number 1112.2940.
Date of creation: Dec 2011
Date of revision: Jul 2012
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Web page: http://arxiv.org/
This paper has been announced in the following NEP Reports:
- NEP-ALL-2011-12-19 (All new papers)
- NEP-MIC-2011-12-19 (Microeconomics)
- NEP-UPT-2011-12-19 (Utility Models & Prospect Theory)
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