EMMI Workshop: Light-ion collisions 2026

I give some perspectives on how one can (more) directly constrain coefficients in low-energies of effective theories of QCD from ultrarelativistic collisions of 16O and 20Ne nuclei at the LHC. Using Lattice Effective Field Theory techniques it is possible to generate discrete nuclear configurations, and it has been shown that by using a reweighting method, a single set of configurations can used to explore a significant Hamiltonian parameter space (see Lu, et al., Physics Letters B 797 (2019) 134863). I show that, despite this promise, significant challenges remain due to sign problems and poor convergence. I discuss methods to mitigate these challenges, and comment on current and future possibilities.