Closed-form Brückner G-matrix and nuclear matter in EFT(π̸)

Ting-Wei Pan, Ji-Feng Yang
2021 Physics Letters B  
The closed-form Brückner G matrix for nuclear matter is computed in the 1 S 0 channel of EFT(/ π ) and renormalized in nonperturbative context. The nuclear medium environment yields additional constraints that are consistent with off-shell T matrix renormalization, keeping the power counting intact and simplifying the running behaviors of the EFT couplings. With the G obtained we computed the energy per particle for neutron and symmetric nuclear matter to demonstrate the physical relevance of
more » ... ical relevance of certain 'physical' parameters that arise from nonperturbative renormalization. We also explored the pairing phenomenon in 1 S 0 channel by examining the poles of the closed-form G matrix with a given density, where again the physical relevance of the same set of physical parameters are clearly illustrated.
doi:10.1016/j.physletb.2021.136302 fatcat:i4olix6opra7bmuhibsav6brjq