Zobrazeno 1 - 10
of 141
pro vyhledávání: '"Gruemmer, F."'
The magnitude and density-dependence of the non-spin dependent Landau-Migdal parameters are derived from Skyrme energy functionals and compared with the phenomenological ones. We perform RPA calculations with various approximations for the Landau-Mig
Externí odkaz:
http://arxiv.org/abs/1402.3249
We review the application of Migdal's "Theory of Finite Fermi System" to the structure of deformed nuclei, approaches beyond the conventional linear response, and microscopic calculations of the Migdal-parameters.
Comment: 28 pages, 12 figures
Comment: 28 pages, 12 figures
Externí odkaz:
http://arxiv.org/abs/1207.2896
Publikováno v:
Phys. Rev. Lett. 109, 092502 (2012)
While bulk properties of stable nuclei are successfully reproduced by mean-field theories employing effective interactions, the dependence of the centroid energy of the electric giant dipole resonance on the nucleon number A is not. This problem is c
Externí odkaz:
http://arxiv.org/abs/1207.0664
We compare correlations and coherent structures in nuclei and financial markets. In the nuclear physics part we review giant resonances which can be interpreted as a coherent structure embedded in chaos. With similar methods we investigate the financ
Externí odkaz:
http://arxiv.org/abs/0910.4348
Autor:
Avdeenkov, A., Gruemmer, F., Kamerdzhiev, S., Krewald, S., Litvinova, E., Lyutorovich, N., Speth, J., Tselyaev, V.
We have calculated the strength distributions of the giant monopole resonance in the even-A tin isotopes (A = 112-124) which were recently measured in inelastic $\alpha$-scattering. The calculations were performed within two microscopic models: the q
Externí odkaz:
http://arxiv.org/abs/0808.0478
Autor:
Lyutorovich, N., Speth, J., Avdeenkov, A., Gruemmer, F., Kamerdzhiev, S., Krewald, S., Tselyaev, V. I.
Publikováno v:
Eur.Phys.J.A37:381-386,2008
The Green's function method in the \emph{Quasiparticle Time Blocking Approximation} is applied to nuclear excitations in $^{132}$Sn and $^{208}$Pb. The calculations are performed self-consistently using a Skyrme interaction. The method combines the c
Externí odkaz:
http://arxiv.org/abs/0806.2813
Publikováno v:
Phys.Lett.B653:196-201,2007
The Extended Theory of Finite Fermi Systems(ETFFS) describes nuclear excitations considering phonons and pairing degrees of freedom, using experimental single particle energies and the effective Landau-Migdal interaction. Here we use the Skyrme inter
Externí odkaz:
http://arxiv.org/abs/0706.2764
Autor:
Tselyaev, V., Speth, J., Gruemmer, F., Krewald, S., Avdeenkov, A., Litvinova, E., Tertychny, G.
Publikováno v:
Phys.Rev.C75:014315,2007
The Extended Theory of Finite Fermi Systems is based on the conventional Landau-Migdal theory and includes the coupling to the low-lying phonons in a consistent way. The phonons give rise to a fragmentation of the single-particle strength and to a co
Externí odkaz:
http://arxiv.org/abs/nucl-th/0612064
Autor:
Tertychny, G., Tselyaev, V., Kamerdzhiev, S., Gruemmer, F., Krewald, S., Speth, J., Avdeenkov, A., Litvinova, E.
Publikováno v:
Physics Letters B647 (2007) 104
The properties of the pygmy (PDR) and giant dipole resonance (GDR)in the stable $^{40}Ca$,$^{44}Ca$ and $^{48}Ca$ isotopes have been calculated within the \emph{Extended Theory of Finite Fermi Systems}(ETFFS). This approach is based on the random pha
Externí odkaz:
http://arxiv.org/abs/nucl-th/0603051
A phenomenon of the financial log-periodicity is discussed and the characteristics that amplify its predictive potential are elaborated. The principal one is self-similarity that obeys across all the time scales. Furthermore the same preferred scalin
Externí odkaz:
http://arxiv.org/abs/physics/0503006