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[Licence| Download | New Version Template] aefq_v3_0.tar.gz(17 Kbytes)
Manuscript Title: Revised calculation of four-particle harmonic-oscillator transformation brackets matrix
Authors: S. Mickevicius, D. Germanas, R.K. Kalinauskas
Program title: HOTB_M
Catalogue identifier: AEFQ_v3_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 184(2013)409
Programming language: Fortran 90.
Computer: Any computer with Fortran 90 compiler.
Operating system: Windows, Linux, FreeBSD, True64 Unix.
RAM: Up to few Gigabytes (see Table 1 and Table 2 included in the distribution package)
Keywords: Mathematical methods in physics, Algebraic methods, Nuclear shell model.
PACS: 03.65.Fd 21.60.Cs.
Classification: 17.16, 17.17.

Does the new version supersede the previous version?: Yes

Nature of problem:
Calculation of the matrix of 4HOB in a more effective way, which allows us to calculate matrix of the brackets up to a few hundred times more rapidly than in a previous version.

Solution method:
The method is based on compact expressions of 4HOB, presented in [1] and its simplifications presented in this paper.

Reasons for new version:
We facilitated the calculation of the 4HOB, based on the method, presented in section 'Theoretical aspects'. The new program version gives shorter calculation times for the 4HOB matrices calculations.

Summary of revisions:
New subroutines for calculation of the matrix of 4HOB. For theoretical issues of revision see section 'Theoretical aspects'.

Restrictions:
The 4HOB matrices up to e = 28.

Running time:
Depends on the dimension of 4HOB matrix (see Table 1 and Table 2 included in the distribution file.).

References:
[1] D. Germanas, S. Mickevicius, R.K. Kalinauskas, Calculation of four- particle harmonic-oscillator transformation brackets, Computer Physics Communications 181, 420?425 (2010).