MicrOMEGAs

MicrOMEGAs is a package to calculate the relic density of a stable massive particle in a generic model. It also computes the rates for direct and indirect detection of dark matter. The generation of the squared matrix elements is done via CalcHEP which permits an easy extension to other models than the MSSM. Because it is not intended as a SUSY spectrum generator, in our implementation, the whole spectrum is passed from SoftSusy through the Supersymmetry Les Houches Accord . The current implementation of MicrOMEGAs in SuperBayeS does not support yet dark matter direct and indirect quantities computation.

In order to keep the MPI structure of SuperBayeS we have done an MPI implementation of MicrOMEGAS. The basic idea consists in creating temporary tagged directories (tmp and results) and dynamic libraries generated at run time, for each of the processors at work. To those are added the node number and the rank of the processor associated (ie. tmp_node_rank). For single procesor scans the process ID associated is added as suffix. In this way we avoid interferences in the writing process. For details on how CalcHEP works see the manual. Once the scans have finished we recomend to remove all of the temporary directories/files created through make clean_micromegas_work in SB_root/source.