6533b861fe1ef96bd12c56ab

RESEARCH PRODUCT

The Random-Phase Approximation

Jouni Suhonen

subject

PhysicsGeneral Relativity and Quantum CosmologyMuffin-tin approximationAstrophysics::High Energy Astrophysical PhenomenaQuantum mechanicsExcited stateNuclear TheoryBorn–Huang approximationDiscrete dipole approximation codesSpouge's approximationGround stateRandom phase approximationEikonal approximation

description

In this chapter we extend the TDA particle-hole formalism of Chap. 9 to include correlations in the nuclear ground state. This sophisticated particle-hole formalism is called the random-phase approximation (RPA). In this description the simple Hartree-Fock particle-hole vacuum is replaced by a correlated ground state involving many-particle-many-hole excitations of the simple particle-hole vacuum. The resulting configuration mixing in excited states is more involved in the RPA than it is in the TDA. The ground-state correlations induce both particle-hole and hole-particle components in the RPA wave function.

yearjournalcountryeditionlanguage
2007-01-01
https://doi.org/10.1007/978-3-540-48861-3_11