Baby Bubbles

Bubbles In Tehran Stock Exchange

The Baby Boom and Baby Bust

The fertility of American women over the last 200 years has two salient features, portrayed in Figure 1. First, it has declined drastically. The average white woman bore 7 children in 1800. By 1990 this had dropped to just 2. This decline in fertility ran unabated during the 140-year period between 1800 and 1940. Second, fertility showed a surprising recovery between the mid1940s and mid-1960s....

Recalcitrant bubbles

We demonstrate that thermocapillary forces may drive bubbles against liquid flow in 'anomalous' mixtures. Unlike 'ordinary' liquids, in which bubbles migrate towards higher temperatures, we have observed vapour bubbles migrating towards lower temperatures, therefore against the flow. This unusual behaviour may be explained by the temperature dependence of surface tension of these binary mixture...

Financial Bubbles, Real Estate bubbles, Derivative Bubbles, and the Financial and Economic Crisis

The financial crisis of 2008, which started with an initially well-defined epicenter focused on mortgage backed securities (MBS), has been cascading into a global economic recession, whose increasing severity and uncertain duration has led and is continuing to lead to massive losses and damage for billions of people. Heavy central bank interventions and government spending programs have been la...

Quiet bubbles

Classic speculative bubbles are loud – price is high and so are price volatility and share turnover. The credit bubble of 2003-2007 is quiet – price is high but price volatility and share turnover are low. We develop a model, based on investor disagreement and short-sales constraints, that explains why credit bubbles are quieter than equity ones. Since debt up-side payoffs are bounded, debt is ...