fast-few-body-bayesing matrix element files

These are Hamiltonian and other observable matrix elements in a harmonic oscillator basis for nuclear few-body systems calculated in chiral effective field theory. These were used for eigenvector continuation emulator training for nuclear few-body systems in https://arxiv.org/abs/2104.04441.<br>These include the triton, Helium-3, and Helium-4 Hamiltonians, the point-proton radius of Helium-4, and the E1A operator that allows the calculation of the triton to Helium-3 beta decay half-life.<br>The data contained in this set can be used to reproduce the results in the above reference. Please also see https://github.com/buqeye/fast-few-body-bayesing for the associated code that needs this data.