Alternatyvi energija / Alternative Energy

In this work we present a FORTRAN code for the calculation of the matrix of the orbital fractional parentage coefficients for five particles (5HOB) in a translationally invariant basis. Our code calculates the 5HOB eigenvector matrix M and the diagonal eigenvalue matrix F. The full 5HOB matrix is obtained from these matrices.

This is a new version of the HOTB code designed to calculate three and four particle harmonic oscillator (HO) transformation brackets and their matrices. The new version uses the OpenMP parallel communication standard for calculations of harmonic oscillator transformation brackets. A package of fortran code is presented. Calculation time of large matrices, orthogonality conditions and array of coefficients can be significantly reduced using effective parallel code. Other functionalities of the original code (for example calculation of single harmonic oscillator brackets) have not been modified.