In this thesis it is analyzed if promoting product market competition can help to to fight unemployment in Europe. We have used a general equilibrium model in order to study how reducing mark-ups and increasing productivity in one sector affect aggregate unemployment for an exogenously given...

Das Thema Immigration steht auf europäischer Ebene immer wieder auf der politischen Agenda. Häufig stand bei der Diskussion die illegale Immigration an den Außengrenzen der EU im Mittelpunkt. Der bisher umgesetzte Ansatz der Europäischen Union mit illegalen Flüchtlingsströmen umzugehen,...

The focus of my research is dynamic political economy in macroeconomics. The first chapter of my dissertation studies the fact that Countries in the Organization of Economic Co-operation and Development (OECD) vary widely in their ratio of capital tax rates to labor tax rates. This chapter’s...

We develop an overlapping generations model with retradeable paper assets and capital accumulation to analyze the interaction between the real economy and an international asset market. The world consists of two homogeneous countries, which differ only in their initial levels of capital. Two...

The aim of this paper is to investigate the spillover effects through an endogenous world interest rate on the inequality of nations. The model of K. Matsuyama (Econometrica 72 (2004)) is explored under the alternative assumption that the world economy consists of two countries, instead of a...

In this paper we develop a spatial Cournot trade model with two unequally sized countries, using the geographical interpretation of the Hotelling line. We analyze the trade and welfare effects of international trade between these two countries. The welfare analysis indicates that in this...

Diese Arbeit beschäftigt sich mit der Integration unfreiwilliger Arbeitslosigkeit in allgemeine Gleichgewichtsmodelle offener Volkswirtschaften. Das Walras oder Arrow-Debreu allgemeine Gleichgewichtskonzept wird im Licht unfreiwilliger Arbeitslosigkeit neu bewertet, und mit dem allgemeinen...

We consider misconceptions about the functioning of the economy as one possible explanation for the emergence of crises in democracies. Furthermore, we study a political process which may lead to successful reform. First of all, we show that voters can make inefficient decisions concerning...

Economics

General financial models have become workhorse models in the fields of macroeconomics and finance. These models have been developed and extensively studied by general equilibrium theorists. What makes them so applicable for macroeconomics and finance is the well accepted fact that models with a...