Programs in Physics & Physical Chemistry
|[Licence| Download | New Version Template] aeor_v1_0.tar.gz(698 Kbytes)|
|Manuscript Title: Numerical simulation code for self-gravitating Bose-Einstein condensates|
|Authors: Eniko J. M. Madarassy, Viktor T. Toth|
|Program title: bec3p|
|Catalogue identifier: AEOR_v1_0|
Distribution format: tar.gz
|Journal reference: Comput. Phys. Commun. 184(2013)1339|
|Programming language: C++ or FORTRAN.|
|Computer: PCs or workstations.|
|Operating system: Linux or Windows.|
|Keywords: Gravity, Poisson's equation, Gross-Pitaevskii equation, Dark matter, Galaxy rotation.|
Nature of problem:
Simulation of a self-gravitating Bose-Einstein condensate by simultaneous solution of the Gross-Pitaevskii and Poisson equations in three dimensions.
The Gross-Pitaevskii equation is solved numerically using the Crank-Nicholson method; Poisson's equation is solved using the relaxation method. The time evolution of the system is governed by the Gross-Pitaevskii equation; the solution of Poisson's equation at each time step is used as an initial estimate for the next time step, which dramatically increases the efficiency of the relaxation method.
Depends on the chosen size of the problem. On a typical personal computer, a 100 × 100 × 100 grid can be solved with a time span of 10 Gyr in approx. a day of running time.
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