Two-nucleon scattering amplitudes at light quark masses from lattice QCD
We present a lattice-QCD determination of nucleon-nucleon scattering amplitudes at pion masses of $M_\pi \approx 200$ MeV and $M_\pi \approx 280$ MeV at a single lattice spacing $a \approx 0.064$ fm on two CLS ensembles. The finite-volume energy spectra are extracted from large Hermitian correlation matrices constructe...