Effective Width and Expansion Energy of the Interacting Condensed 87Rb Bose Gas with Finite Size Effects

Ahmed S. HASSAN; Azza M. EL-BADRY

Article Details

Effective Width and Expansion Energy of the Interacting Condensed 87Rb Bose Gas with Finite Size Effects

Authors:

Ahmed S. HASSAN | Azza M. EL-BADRY

Publisher:

TUBITAK

Journal:

Turkish Journal of Physics 2009 Vol.33 Issue 1, pp.21-30

Document Type:

Article

Publication Date:

12/2008

Document Language:

Turkish

Document ID (Org No.):

2000760859

Frequency:

Bimonthly

eISSN:

1303-6122

pISSN:

1300-0101

Keywords:

Interacting Bose gas; Thermodynamical properties for BEC; Semiclassical approach.

Abstract:

 

This work is devoted to study the temperature dependence of  the effective width and expansion energy on the finite size and  interaction effects (repulsive interactions).  It is found that the  effective size , and expansion energy in the radial direction Ey of a Bose gas follow a characteristic temperature dependence, i.e. , Ey \propto (T/T0)4 if T0  T. Our results show that these two parameters increases with the number of atoms, and with increasing repulsive interaction strength at temperature less than the transition temperature, (T  To).  The obtained results are compared with the available experimental data for 87Rb directly, full agreement is obtained.

 

This work is devoted to study the temperature dependence of  the effective width and expansion energy on the finite size and  interaction effects (repulsive interactions).  It is found that the  effective size , and expansion energy in the radial direction Ey of a Bose gas follow a characteristic temperature dependence, i.e. , Ey \propto (T/T0)4 if T0  T. Our results show that these two parameters increases with the number of atoms, and with increasing repulsive interaction strength at temperature less than the transition temperature, (T  To).  The obtained results are compared with the available experimental data for 87Rb directly, full agreement is obtained.

Article Details

Effective Width and Expansion Energy of the Interacting Condensed 87Rb Bose Gas with Finite Size Effects

Authors: Ahmed S. HASSAN | Azza M. EL-BADRY

Publisher: TUBITAK

Journal: Turkish Journal of Physics 2009 Vol.33 Issue 1, pp.21-30

Document Type: Article

Publication Date: 12/2008

Document Language: Turkish

Document ID (Org No.): 2000760859

Frequency: Bimonthly

eISSN: 1303-6122

pISSN: 1300-0101

Interacting Bose gas; Thermodynamical properties for BEC; Semiclassical approach.

Issues

Authors:

Ahmed S. HASSAN | Azza M. EL-BADRY

Publisher:

TUBITAK

Journal:

Turkish Journal of Physics 2009 Vol.33 Issue 1, pp.21-30

Document Type:

Article

Publication Date:

12/2008

Document Language:

Turkish

Document ID (Org No.):

2000760859

Frequency:

Bimonthly

eISSN:

1303-6122

pISSN:

1300-0101