Abstract A period that lasted from 900-1300 AD has been known as the Medieval Climate Anomaly. This indicated warming of earth’s temperature. However, this phenomenon is still subject debate today, whether global or regional warming. Several studies concluded warm a and an important period, although external forcing mainly similar to present day. climate archives Indonesia i.e. lake sediment, m...

This paper examines the role of carry trade and momentum trading strategies and their implications for the magnitude of the forward premium anomaly. The formal analysis uses a logistic smooth transition regression, with transition variables related to the di¤erent currency trading strategies. The hypothesis of uncovered interest parity is found to hold in an upper regime where carry trades appe...

In models with low-energy supersymmetry breaking, an anomalous Abelian horizontal gauge symmetry can simultaneously explain the fermion mass hierarchy and the values of the μ and B terms. We construct an explicit model where the anomaly is cancelled by the Green-Schwarz mechanism at the string scale. We show that with our charge assignments, the breaking of the horizontal symmetry generates the...

The recently reported measurement of the muon's anomalous magnetic moment differs from the standard model prediction by 2.6 sigma. We examine the implications of this discrepancy for supersymmetry. Deviations of the reported magnitude are generic in supersymmetric theories. Based on the new result, we derive model-independent upper bounds on the masses of observable supersymmetric particles. We...

Gravitational and other anomalies seen repeatedly in connection with solar eclipses have led to speculation about a possible gravitational shielding effect as the cause. Here we show that an unusual phenomenon that occurs only during solar eclipses, rapid air mass movement for the bulk of the atmosphere above normal cloud levels, appears to be a sufficient explanation for both the magnitude and...