Pregled bibliografske jedinice broj: 439142
Low-lying resonances of 9ΛBe: Faddeev calculation with Padé-approximants
Low-lying resonances of 9ΛBe: Faddeev calculation with Padé-approximants // Nuclear physics. A, 790 (2007), 695c-698c doi:10.1016/j.nuclphysa.2007.03.126 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 439142 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Low-lying resonances of 9ΛBe: Faddeev calculation with Padé-approximants
Autori
Filikhin, I. ; Suslov, V. M. ; Vlahović, Branislav
Izvornik
Nuclear physics. A (0375-9474) 790
(2007);
695c-698c
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
three nucleon problem ; computation in configuration space
Sažetak
Configuration space Faddeev equations are applied to describe the 9ΛBe hypernucleus in the ααΛ cluster model. For calculation of resonance state energies a variant of the method of analytical continuation in coupling constant is used. To realize this method, an auxiliary three-body potential is added to the Hamiltonian of the equations. A proper choice of strength parameter of the potential converts a resonance state into a bound state and an energy trajectory is obtained by variations of this parameter. To fulfill analytical continuation of this trajectory as a function of the strength parameter onto the complex plane, the Padé approximation is used. Spectrum of low-lying resonances is calculated with two αΛ phenomenological potentials. We predict existence of the 0+2 and 4+1 virtual states as well as the 2+2 resonance state near by the ααΛ threshold. The configuration for description of the 9ΛBe ground band is discussed.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
098-0000000-3194 - Nuklearne Interakcije
Ustanove:
Institut "Ruđer Bošković", Zagreb
Profili:
Branislav Vlahovic
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus