title: Probing Resonances of the Dirac Equation with Complex Momentum Representation.
abstract: Resonance plays critical roles in the formation of many physical phenomena, and several methods have been developed for the exploration of resonance. In this work, we propose a new scheme for resonance by solving the Dirac equation in the complex momentum representation, in which the resonant states are exposed clearly in the complex momentum plane and the resonance parameters can be determined precisely without imposing unphysical parameters. Combined with the relativistic mean-field theory, this method is applied to probe the resonances in ^{120}Sn with the energies, widths, and wave functions being obtained. Compared to other methods, this method is not only very effective for narrow resonances, but also can be reliably applied to broad resonances.
authors.affiliation: School of Physics and Materials Science, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Niu
authors.initials: N
authors.lastname: Li
authors.affiliation: School of Physics and Materials Science, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Shi
authors.affiliation: School of Physics and Materials Science, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Jian-You
authors.initials: JY
authors.lastname: Guo
authors.affiliation: School of Physics and Materials Science, Anhui University, Hefei 230601, People's Republic of China.
authors.forename: Zhong-Ming
authors.initials: ZM
authors.lastname: Niu
authors.affiliation: RIKEN Nishina Center, Wako 351-0198, Japan.|Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan.
authors.forename: Haozhao
authors.initials: H
authors.lastname: Liang