Double roller quenching of Li2B204(0.9)-LiFe5Og(0.1) has been performed with various melt temperatures and roller • speeds .The changes in physical properties or in the devitrification process of the amorphous samples are shown to be related to the LiFejOg content variations or to the Fe^ appearance but not to structural changes of the amorphous state due to preparation processes

The interaction between an atom and a one mode external driving field is an ubiquitous problem in many branches of physics and is often modeled using the Rabi Hamiltonian. In this paper we present a series of analytically solvable Hamiltonians that approximate the Rabi Hamiltonian and compare our results to the Jaynes-Cummings model which neglects the so-called counter-rotating term in the Rabi...

The local physical properties of an isolated quantum statistical system in the stationary state reached long after a quench are generically described by the Gibbs ensemble, which involves only its Hamiltonian and the temperature as a parameter. If the system is instead integrable, additional quantities conserved by the dynamics intervene in the description of the stationary state. The resulting...

The Paris area is strongly urbanized and is exposed to atmospheric pollution events. To understand the chemical and physical processes that are taking place in this area it is necessary to describe correctly the atmospheric boundary-layer (ABL) dynamics and the ABL height evolution. During the winter of 1994-1995, within the framework of the Etude de la Couche Limite Atmosphérique en Agglomérat...

One of the difficulties in interpreting experimental results is in assessing the uncertainty to be associated with the theoretical calculation. This is particularly true in QCD where the coupling is quite strong and one expects higher order corrections to be significant. Typically, one characterizes theoretical uncertainty by the dependence on the renormalization scale μ. Since we don’t actuall...

We derive some physical properties of ideal assemblies of identical particles obeying generalized exclusion statistics. We discuss fluctuations, and in this connection point out a fundamental contrast to conventional quantum statistics. We demonstrate a duality relating the distribution of particles at statistics g to the distribution of holes at statistics 1/g. We suggest applications to Mott ...

Introduction Conclusions References

People constantly make snap judgments about objects encountered in the environment. Such rapid judgments must be based on the physical properties of the targets, but the nature of these properties is yet unknown. We hypothesized that sharp transitions in contour might convey a sense of threat, and therefore trigger a negative bias. Our results were consistent with this hypothesis. The type of c...