We outline a martingale duality method for determining the minimal entropy martingale measure in a general continuous semimartingale model, and provide the relevant verification results. This method is illustrated by a detailed case study of the Stein and Stein stochastic volatility model driven...

Asset prices discounted by a tradable numeraire N should be (local) martingales under some measure Q that is equivalent to the original probability measure P. Instead of studying the set of equivalent martingale measures with respect to a prespecified numeraire, we will look for a tradable...

We focus on two particular aspects of model risk: the inability of a chosen model to fit observed market prices at a given point in time (calibration error) and the model risk due to the recalibration of model parameters (in contradiction to the model assumptions). In this context, we use...

We focus on two particular aspects of model risk: the inability of a chosen model to fit observed market prices at a given point in time (calibration error) and the model risk due to the recalibration of model parameters (in contradiction to the model assumptions). In this context, we use...

Academic economists today are caught in a Publication Impossibility Theorem System" or PITS. To further their careers, they are required to publish in A-journals, but this is impossible for the vast majority because there are few slots open in such journals. Such academic competition is held to...

The paper reviews the necessary reforms of Germany and also addresses the question whether the reforms need a big bang or whether they can be accomplished by a piece meal approach.

This paper examines the post-War Summer and Winter Olympic Games in order to determine the economic and political determinants of national participation, of female participation in particular, and of success at the Games (i.e., medal counts). Compared to the Summer Games, Winter participation...

Studies of the relationship between religion and economics can be divided into three major lines of research: behavioural economics of religion (microeconomic approach), macroeconomic consequences of religion and religious explanations of economic phenomena. Except for the third line strong...