This paper investigates the identification, the determinacy and the stability of ad hoc, "quasi-optimal" and optimal policy rules augmented with financial stability indicators (such as asset prices deviations from their fundamental values) and minimizing the volatility of the policy interest...

This paper investigates the identification, the determinacy and the stability of ad hoc, "quasi-optimal" and optimal policy rules augmented with financial stability indicators (such as asset prices deviations from their fundamental values) and minimizing the volatility of the policy interest...

Exploiting a specific sunspot equilibrium in a standard forward-looking New Keynsian model, we present an example of a possible conflict between short-term price stability and financial stability. We find a conflict because the sunspot process consists of a self-fulfilling belief linking the...

The 2007-2009 financial crisis has shown the importance of understanding economic and financial dynamics for the evaluation of systemic risks. In this article, we use classical perturbation theory of dynamical systems to measure the global stability of the financial system. We analyze the...

We build an agent-based dynamical system for the global economy to investigate and analyze financial crises. The agents are large aggregates of a subeconomy, and the global economy is a collection of subeconomies. We use well-known theories of dynamical systems to represent a financial crisis as...

This paper presents a tractable model of non-linear dynamics of market returns using a Langevin approach.Due to non-linearity of an interaction potential, the model admits regimes of both small and large return fluctuations. Langevin dynamics are mapped onto an equivalent quantum mechanical (QM)...

Die Liberalisierung der globalen Finanzmärkte hat ihr Ziel verfehlt, für mehr Stabilität und Wirtschaftswachstum zu sorgen. Stattdessen folgt seit 30 Jahren eine Krise auf die andere. Jetzt werden etliche Bankenreformen diskutiert, um die Finanzmärkte krisensicherer zu machen. Dabei...

The impact of increasing leverage in the economy produces hyperreaction of market participants to variations of their revenues. If the income of banks decreases, they mass-reduce their lendings; if corporations sales drop, and due to existing debt they cannot adjust their liquidities by further...

This paper introduces a bubbly asset to a standard macroeconomic model with heterogeneous agents and borrowing constraints. In this tractable quantitative framework, I show the possibility of a return-preserving bubble that absorbs savings with no good investment opportunities. Analysis of the...

A healthy financial system encourages the efficient allocation of capital and risk. The collapse of the house price bubble led to the financial crisis that started in 2007. There is a large empirical literature concerning the relation between asset price bubbles and financial crises. I evaluate...