Boltzmann equation approach to the N-body problem with masses varying according to the Eddington-Jeans law

1994 ◽  
Vol 59 (3) ◽  
pp. 201-208 ◽  
Author(s):  
A. R. Plastino ◽  
J. C. Muzzio
Keyword(s):  
Boltzmann Equation ◽  
Body Problem ◽  
Equation Approach ◽  
N Body Problem

SPIN DIFFUSION COEFFICIENT OF A1-PHASE OF SUPERFLUID 3He AT LOW TEMPERATURES

2009 ◽  
Vol 23 (12) ◽  
pp. 1603-1610 ◽  
Author(s):  
R. AFZALI ◽  
F. PASHAEE
Keyword(s):  
Diffusion Coefficient ◽  
Boltzmann Equation ◽  
Low Temperatures ◽  
Spin Diffusion ◽  
Superfluid 3He ◽  
Total Spin ◽  
Equation Approach ◽  
Fluid Component ◽  
Melting Pressure ◽  
Superfluid Component

The spin diffusion coefficient tensor of the A1-phase of superfluid 3 He at low temperatures and melting pressure is calculated using the Boltzmann equation approach and Pfitzner procedure. Then considering Bogoliubov-normal interaction, we show that the total spin diffusion is proportional to 1/T2, the spin diffusion coefficient of superfluid component [Formula: see text] is proportional to T-2, and the spin diffusion coefficient of super-fluid component [Formula: see text] is independent of temperature. Furthermore, it is seen that superfluid components play an important role in spin diffusion of the A1-phase.

scholarly journals On frequency estimations in phase fitted variational integrators for the general N-body problem

PAMM ◽  
2013 ◽  
Vol 13 (1) ◽  
pp. 33-34
Author(s):  
Odysseas Kosmas ◽  
Sigrid Leyendecker
Keyword(s):  
Body Problem ◽  
Variational Integrators ◽  
N Body Problem
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