Pregled bibliografske jedinice broj: 6418
A rearrangement of the Feenberg perturbation formula and elementary excitation interactions in bose fluids
A rearrangement of the Feenberg perturbation formula and elementary excitation interactions in bose fluids // Zeitschrift für Physik b, 101 (1996), 109-119 doi:10.1007/s002570050188 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 6418 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
A rearrangement of the Feenberg perturbation formula and elementary excitation interactions in bose fluids
Autori
Kilić, Srećko ; Campbell, Charles
Izvornik
Zeitschrift für Physik b (0722-3277) 101
(1996);
109-119
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
generalized Feenberg perturbation method; ladder state diagrams; roton interaction
(generalized Feenberg perturbation method; ladder state diagrams; roton interactions)
Sažetak
Feenberg perturbation energy for two quasiparticles is rearranged to be valid in many-boson systems up to the fifth order. Double excited states in many particle boson systems are studied using Feenberg perturbation theory. The effective interaction energy between quasiparticles is obtained. It is shown that in this case the interaction energy depends on density (pressure) and changes its sign when density increases if the bare two-body potential qualitatively has short range repulsion and longer range attraction
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Scopus
