We calculate the energy levels corresponding to the Roper resonance based on a two-flavor chiral effective Lagrangian for pions,nucleons,deltas,and the Roper resonance at the leading one-loop order.We show that the Ro...We calculate the energy levels corresponding to the Roper resonance based on a two-flavor chiral effective Lagrangian for pions,nucleons,deltas,and the Roper resonance at the leading one-loop order.We show that the Roper mass can be extracted from these levels for lattice volumes of moderate size.展开更多
基金DFG and NSFC through funds provided to the Sino-German CRC 110’Symmetries and the Emergence of Structure in QCD’(NSFC Grant No.11621131001,DFG Grant No.TRR110)Volkswagen Stiftung(Grant no.93562)the CAS President’s International Fellowship Initiative(PIFI)(Grant No.2018DM0034)。
文摘We calculate the energy levels corresponding to the Roper resonance based on a two-flavor chiral effective Lagrangian for pions,nucleons,deltas,and the Roper resonance at the leading one-loop order.We show that the Roper mass can be extracted from these levels for lattice volumes of moderate size.
