scholarly journals Bose Gas in Classical Environment at Low Temperatures

2020 ◽  
Vol 65 (11) ◽  
pp. 1002
Author(s):  
V. Pastukhov
Keyword(s):  
Perturbation Theory ◽  
Ground State ◽  
Low Temperatures ◽  
Bose Gas ◽  
Quenched Disorder ◽  
Interacting Particles ◽  
Dilute Bose Gas ◽  
Infinite Mass ◽  
Non Gaussian ◽  
The Impact

The properties of a dilute Bose gas with the non-Gaussian quenched disorder are analyzed. Being more specific, we have considered a system of bosons immersed in the classical bath consisting of the non-interacting particles with infinite mass. Making use of perturbation theory up to the second order, we have studied the impact of environment on the ground-state thermodynamic and superfluid characteristics of the Bose component.

scholarly journals WAVE FUNCTION AND PAIR DISTRIBUTION FUNCTION OF A DILUTE BOSE GAS

2009 ◽  
Vol 23 (15) ◽  
pp. 1843-1845
Author(s):  
BO-BO WEI
Keyword(s):  
Wave Function ◽  
Distribution Function ◽  
Low Temperatures ◽  
Hard Sphere ◽  
Pair Distribution Function ◽  
Bose Gas ◽  
Dilute Bose Gas

The wave function of a dilute hard sphere Bose gas at low temperatures is revisited. Errors in an early 1957 paper are corrected. The pair distribution function is calculated for two values of [Formula: see text].

PATH INTEGRAL DERIVATION OF THE GROUND STATE ENERGY OF THE INTERACTING PARTICLES IN A HARMONIC TRAP

2003 ◽  
Vol 17 (31n32) ◽  
pp. 5983-5989
Author(s):  
KOBCHAI TAYANASANTI ◽  
VIRULH SA-YAKANIT
Keyword(s):  
Density Matrix ◽  
Path Integral ◽  
Ground State Energy ◽  
Ground State ◽  
Path Integration ◽  
State Energy ◽  
Bose Gas ◽  
Pitaevskii Equation ◽  
Interacting Particles ◽  
Analytical Result

We show within the framework of Variational Path Integration that the density matrix and the ground state energy of the trapped Bose gas can be obtained in a simple way and it is in agreement with the result obtained by the variational Gross–Pitaevskii equation. The advantage of this method is the analytical result can be found for various forms of interaction between particles.

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