Disorder-induced superfluidity

We use quantum Monte Carlo simulations to study the phase diagram of hard-core bosons with short-ranged {\it attractive} interactions, in the presence of uniform diagonal disorder. It is shown that moderate disorder stabilizes a glassy superfluid phase in a range of values of the attractive interaction for which the system is a Mott insulator, in the absence of disorder. A transition to an insulating Bose glass phase occurs as the strength of the disorder or interactions increases.Comment: 5 pages, 6 figure

TRAINING MANNERS FOR RESERVE HUMAN RESOURCES OF BASKETBALL PLAYERS FOR OVERSEAS AND VIETNAM

Training sport athletes, improving the source of reserve talents Basketball athletes are an urgent need for the training of young athletes. Through theoretical and practical basis, the forms of fostering reserve basketball athletes (second line) of countries with development and development models. The dissertation initially identified the forms of fostering talents for Basketball talents similar to Viet Nam reality. Since then, the dissertation proposes some forms of retraining and training of Basketball reserve talents in Vietnam in the current time.  Article visualizations

Electromgnetic-gravitational cross-sections in external elctromagnetic fields

The classical processes: the conversion of photons into gravitons in the static electromagnetic fields are considered by using Feynman perturbation techniques. The differential cross sections are presented for the conversion in the electric field of the flat condesor and the magnetic field of the selenoid. A numerical evaluation shows that the cross sections may have the observable value in the present technical scenario.Comment: 11 pages, LATEX, no figure