On the extraction of tensor force from lattice QCD

The finite volume spectrum of the two-nucleon system in 3S1-3D1 channel not only gives access to the nucleon-nucleon scattering phase shifts but also to the S-D mixing parameter of this channel. By studying the finite volume energy quantization condition of the two-nucleon system with non-zero center of mass momenta, I will introduce a spectral quantity that is sensitive to the S-D mixing in the deuteron channel. I will discuss the implication of the results presented for the extraction of the tensor force in future lattice QCD calculations.