sisi4s
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Coupled Cluster For Solids (SISI4S) is is a parallel quantum chemistry package built on the Cyclops Tensor Framework which provides high-performance structured tensor operations. SISI4S is primarily focused on iterative CC methods such as CCD, CCSD, and CCSD(T) for periodic systems in a plane-wave basis. The code is currently interfaced to the Vienna Ab-inition Simulation Package.
The software is available on https://github.com/alejandrogallo/sisi4s and maybe obtained via the command