Zobrazeno 1 - 10
of 33
pro vyhledávání: '"G. G. DUSSEL"'
Publikováno v:
International Journal of Modern Physics E. 17:2155-2159
Exactly solvable models have played an important role in helping to elucidate the physics of strongly correlated systems. Recently, we have extended the Richardson-Gaudin (RG) models of SU(2) like particle pairing to higher rank algebras. In particul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35ac7607457ab5f77a62528a89d416f9
https://doi.org/10.1142/s0218301308011264
https://doi.org/10.1142/s0218301308011264
Publikováno v:
Nuclear Physics A. 789:182-200
One- and two-quasi particle states are studied in the complex energy plane. It is found that the pairing interaction does not change the character of the complex state. If a normal state is a physi ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bebd88861fdb3d5b21a93aba715f7d1f
https://doi.org/10.1016/j.nuclphysa.2007.04.005
https://doi.org/10.1016/j.nuclphysa.2007.04.005
Publikováno v:
Physical Review C. 58:2591-2594
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c08a48a92a388d07ad46eb905c9cc37
https://doi.org/10.1103/physrevc.58.2591
https://doi.org/10.1103/physrevc.58.2591
Publikováno v:
Physical Review C. 56:2508-2517
The scaling properties of the exact wave functions in the two-level pairing model are studied and a well-defined limit, when the number of pairs goes to infinity, is found. An approximate method for obtaining the scaled wave functions is discussed. W
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0351cfe787b20e76e4a370a42f6f945f
https://doi.org/10.1103/physrevc.56.2508
https://doi.org/10.1103/physrevc.56.2508
Publikováno v:
Physical Review C. 56:804-811
The relation between Galilei invariance and the energy weighted sum rule for a mass dipole operator is discussed using a monopole pairing interaction. It is found that the energy weighted sum rule for the mass dipole operator changes as much as 18{pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9fa43d78c886653a9ae286931325e8e
https://doi.org/10.1103/physrevc.56.804
https://doi.org/10.1103/physrevc.56.804
Publikováno v:
Physical Review C. 49:1989-1998
We evaluate the spreading width of the giant resonances using the discontinuity in the second derivative of the propagator of the vibrational phonon. This allows us to isolate the processes that contribute to the spreading width in terms of the Feynm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcbf4dc2c35351b944ad01846bc64941
https://doi.org/10.1103/physrevc.49.1989
https://doi.org/10.1103/physrevc.49.1989
Publikováno v:
Physical Review C. 46:558-564
The influence of thermal fluctuations upon escape widths of giant resonances is analyzed within a thermal random phase approximation that includes the effect of the continuum through the use of resonant single-particle states in the basis set of stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96e27def0ad67fd79fbd6858d657c8c7
https://doi.org/10.1103/physrevc.46.558
https://doi.org/10.1103/physrevc.46.558
Publikováno v:
Physical Review C. 80
Pairing (particle-particle) giant resonances are analyzed within a shell-model formalism in the complex energy plane with the aim of understanding why they have not been observed so far. A comparison is made with the equivalent particle-hole mode by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a4c674c192105cf96de3e218fba9e11
https://doi.org/10.1103/physrevc.80.064311
https://doi.org/10.1103/physrevc.80.064311
Publikováno v:
Physical Review C. 44:184-189
A time-dependent mean field approximation is applied to a simple bosonic model that is related to the phase transition from spherical to deformed nuclei. It is shown that this approximation is very appropriate for the detection of this phase transiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a561ac35b0a84b269c028d9c86901b2e
https://doi.org/10.1103/physrevc.44.184
https://doi.org/10.1103/physrevc.44.184
Autor:
H.M. Sofia, G. G. Dussel
Publikováno v:
Physical Review C. 78
The angular momentum decomposition of pairs obtained using Richardson's exact solution of the pairing Hamiltonian for the deformed {sup 174}Yb nucleus are displayed. The probabilities for low angular momenta of the collective pairs are strikingly dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc5984becfbe6661307624129810f2fe
https://doi.org/10.1103/physrevc.78.014316
https://doi.org/10.1103/physrevc.78.014316