Computer Physics Communications Program LibraryPrograms in Physics & Physical Chemistry |

[Licence| Download | New Version Template] aefq_v2_0.tar.gz(63 Kbytes) | ||
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Manuscript Title: The four-particle harmonic-oscillator brackets: compact expressions and updated Fortran program | ||

Authors: S. Mickevicius, E. Brazauskas, D. Germanas, R.K. Kalinauskas | ||

Program title: HOTB | ||

Catalogue identifier: AEFQ_v2_0Distribution format: tar.gz | ||

Journal reference: Comput. Phys. Commun. 182(2011)1377 | ||

Programming language: Fortran 90. | ||

Computer: Any computer with FORTRAN 90 compiler. | ||

Operating system: Windows, Linux, FreeBSD, True64 Unix. | ||

RAM: 8 MB | ||

Keywords: mathematical methods in physics, algebraic methods, nuclear shell model. | ||

PACS: 03.65.Fd 21.60.Cs. | ||

Classification: 17.17. | ||

Does the new version supersede the previous version?: Yes | ||

Nature of problem:Calculation of the four-particle harmonic-oscillator transformation brackets for cases of mass-ratio parameters d = 0, d → ∞ and d = 0._{1} | ||

Solution method:The method is based on compact expressions of the four-particle harmonics oscillator brackets, presented in [1] and its simplifications presented in this paper. | ||

Reasons for new version:We simplified the four-particle harmonic-oscillator transformation brackets expressions in cases d = 0, d → ∞ and d = 0. It gives shorter calculation times and the possibility of calculating the four-particle harmonics oscillator brackets in these cases, which was not possible in the previous version of the program._{1} | ||

Summary of revisions:New subroutines for the calculation of the harmonic-oscillator transformation brackets in cases d = 0, d → ∞ and d = 0. In case _{1}d = 0 subroutine HOB4_d_0(e1, l1, e2, l2, l12, e3, l3, e1s, l1s, e2s, l2s, l12s, e3s, l3s, l) is used. In this case e_{2} = e^{′}_{2} and l_{2} = l^{′}_{2}. In case d → ∞ subroutine HOB4_d_infinity(e1, l1, e2, l2, l12, e3, l3, e1s, l1s, e2s, l2s, l12s, e3s, l3s, l) is used. In this case e_{1} = e^{′}_{1} and l_{1} = l^{′}_{1}. In case d_{1} = 0 subroutine HOB4_d1_0(e1, l1, e2, l2, l12, e3, l3, e1s, l1s, e2s, l2s, l12s, e3s, l3s, l) is used. For theoretical issues of the revision see section 'Theoretical aspects'. | ||

Restrictions:The four-particle harmonic-oscillator transformation brackets up to e = 28. | ||

Running time:Less than one second for the single harmonic-oscillator transformation bracket. | ||

References: | ||

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

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