The project supported by National Natural Science Foundation under Grant Nos. 10574022 and 10575022 and the Natural Science Foundation of Fujian Province under Grant Nos. Z0512006 and A0210014.
<正> Based on an iterative method for solving the groundstate of Schrdinger equation,it is found that a kind ofgeneralized Sombrero-shaped potentials in N-dimen
<正>Current universe (assumed here to be normal matter on the brane) is pressureless from observations.In this case the energy condition is ρ_0≥0 and p0=0.By