6,331 research outputs found
Number of vortices generated in a rotating Bose-Einstein condensates in two-dimensional optical lattice
In the present paper we calculate the number of vortices generated in a
rotating Bose-Einstein condensate in two-dimensional optical lattice.
Our approach enabled us to parametrize the vortices number in terms of the
thermodynamic potential for the system under consideration. The
thermodynamic potential is calculated using the semiclassical approximation
approach. The finite size and the interatomic interaction effects are
investigated. The calculated results show that the vortices number as a
function of the angular velocity of rotation rate depends on the normalized
temperature, number of particles, interatomic interaction, and optical
potential
DEBT SUSTAINABILIY AND ECONOMIC GROWTH IN EGYPT
The persistence growth of Egypt's public domestic debt has raised concerns regarding its impact on economic growth and fears are being express about the debt sustainability. Utilizing data for the period 1981-2006, the results obtained from cointegration model reveal that the public domestic debt in Egypt has a robust negative impact on growth. The sustainability of debt was examined used some algebra methods. The results suggested that the recent path of debt followed in Egypt was sustainable. For debt to remain sustained in future, substantial fiscal reforms are needed and policies should be adopting to maintain an increasing growth-interest rate differential.Public Domestic Debt; Fiscal Budget; Debt Sustainability; Economic Growth; Cointegration.
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