作者: D.O. RISKA
DOI: 10.1016/B978-0-444-86979-1.50042-9
关键词: Physics 、 Isospin 、 Isovector 、 Meson 、 Operator (computer programming) 、 Particle physics 、 Exchange interaction 、 Nuclear force 、 Pion 、 Quantum electrodynamics 、 Observable
摘要: Publisher Summary This chapter highlights the nuclear force and electromagnetic current operator. It discusses relation between operator nucleon–nucleon interaction. The describes assumptions needed for construction of two-body directly from isospin- velocity-dependent components interaction potential observable consequences exchange constructed operators that are associated with give rise to large corrections in few body-systems, their effects nuclei usually relatively small. isovector tensor small but non-negligible contributions magnetic form factors throughout periodic system already being at intermediate values momentum transfer improve agreement empirical values. In a dense medium, meson will be modified both by self-energy propagators describe propagating medium reduction meson–nucleon coupling strength caused quasiparticle screening nucleons. There is tendency cancellation these two effects, which most notable case pion exchange. polarization may used as an—albeit only qualitative—justification common practice employing bare models calculation properties nuclei.