The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances . the consistency of rrpa calculations requires two aspects : first , it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian . second , the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states 自洽的相對論無規(guī)位相近似理論的自洽性要求有兩方面的內(nèi)容:第一,描述原子核的激發(fā)態(tài)性質(zhì)和基態(tài)性質(zhì)時必須從同一個有效的拉矢量出發(fā);第二,相對論無規(guī)位相近似計算,不但要考慮正能的粒子-空穴組態(tài)的貢獻(xiàn),而且還要考慮從fermi海核子態(tài)到dirac海負(fù)能核子態(tài)形成的對激發(fā)的貢獻(xiàn)。
The random phase approximation (RPA) is an approximation method in condensed matter physics and in nuclear physics. It was first introduced by David Bohm and David Pines as an important result in a series of seminal papers of 1952 and 1953.