This software computes the quantization determinant involving the box matrix B and the Ktilde matrix which relates two-particle interaction energies in finite volume to the scattering matrix. An overview of this software is given in the paper below:

@article{Morningstar:2017spu,
      author         = {Morningstar, Colin and Bulava, John and Singha, Bijit and
                        Brett, Ruair\'i and Fallica, Jacob and Hanlon, Andrew and
                        H\"orz, Ben},
      title          = {Estimating the two-particle $K$-matrix 
                        for multiple partial waves and decay channels 
                        from finite-volume energies},
      journal        = "Nucl. Phys. B",
      volume         = "924",
      year           = "2017",
      pages          = "477--507",
      doi            = "10.1016/j.nuclphysb.2017.09.014"
}