English
Related papers

Related papers: Particle-phonon coupling effects within theory of …

200 papers

Recent results of the description of quadrupole moments of odd semi-magic nuclei are briefly reviewed. They are based on the self-consistent theory of finite Fermi systems with account for the phonon-particle coupling (PC) effects. The…

Nuclear Theory · Physics 2018-08-29 E. E. Saperstein , S. Kamerdzhiev , D. S. Krepish , S. V. Tolokonnikov , D. Voitenkov

A method is developed to consider the particle-phonon coupling (PC) effects in the problem of finding odd-even double mass differences (DMD) of magic nuclei within the approach starting from the free $NN$-potential. Three PC effects are…

Nuclear Theory · Physics 2016-12-21 E. E. Saperstein , M. Baldo , N. V. Gnezdilov , S. V. Tolokonnikov

A method is developed to consider the particle-phonon coupling (PC) effects in the calculation of the odd-even double mass differences (DMD) in semi-magic nuclei starting from the free $NN$-potential. The PC correction $\delta \Sigma^{\rm…

Nuclear Theory · Physics 2017-12-12 E. E. Saperstein , M. Baldo , S. S. Pankratov , S. V. Tolokonnikov

A method is presented to evaluate the particle-phonon coupling (PC) corrections to the single-particle energies (SPEs) in semi-magic nuclei. In such nuclei always there is a collective low-lying $2^+$ phonon, and a strong mixture of…

Nuclear Theory · Physics 2017-12-12 E. E. Saperstein , M. Baldo , S. S. Pankratov , S. V. Tolokonnikov

The self-consistent model, developed previously to describe phonon coupling (PC) effects in magnetic moments of odd magic and semi-magic nuclei, is extended to quadrupole moments. It is based on the theory of finite Fermi systems with the…

Nuclear Theory · Physics 2017-12-19 E. E. Saperstein , S. Kamerdzhiev , D. S. Krepish , S. V. Tolokonnikov , D. Voitenkov

A method to evaluate the particle-phonon coupling (PC) corrections to the single-particle energies in semi-magic nuclei, based on a direct solving the Dyson equation with PC corrected mass operator, is used for finding the odd-even mass…

Nuclear Theory · Physics 2017-12-12 E. E. Saperstein , M. Baldo , S. S. Pankratov , S. V. Tolokonnikov

Phonon coupling (PC) corrections to magnetic moments of odd neighbors of magic and semi-magic nuclei are analyzed within the self-consistent Theory of Finite Fermi Systems (TFFS) based on the Energy Density Functional by Fayans et al. The…

Nuclear Theory · Physics 2015-06-15 E. E. Saperstein , O. Achakovskiy , S. Kamerdzhiev , S. Krewald , J. Speth , S. V. Tolokonnikov

A method to evaluate the particle-phonon coupling (PC) corrections to the single-particle energies in semi-magic nuclei, based on the direct solution of the Dyson equation with PC corrected mass operator, is presented. It is used for…

Nuclear Theory · Physics 2018-05-30 E. E. Saperstein , M. Baldo , S. S. Pankratov , S. V. Tolokonnikov

Odd-even double mass differences (DMD) of magic nuclei are found within the approach starting from the free $NN$ interaction with account for particle-phonon coupling (PC) effects. We consider three PC effects: the phonon induced effective…

Nuclear Theory · Physics 2016-12-28 E. E. Saperstein , M. Baldo , N. V. Gnezdilov , S. V. Tolokonnikov

The Green function formalism with a consistent account for phonon coupling (PC), based on the self-consistent theory of finite Fermi-systems, is applied for pygmy- and giant multipole resonances in magic nuclei with the aim to consider…

Nuclear Theory · Physics 2020-03-06 S. Kamerdzhiev , M. Shitov

The self-consistent Theory of Finite Fermi Systems based on the Energy Density Functional by Fayans et al. with the set DF3-a of parameters fixed previously is used to calculate three kinds of quadrupole moments. At first, we examined…

Nuclear Theory · Physics 2015-06-11 S. Kamerdzhiev , S. Krewald , S. Tolokonnikov , E. E. Saperstein , D. Voitenkov

The quadrupole moments of odd neighbors of semi-magic lead and tin isotopes and $N=50,N=82$ isotones are calculated within the self-consistent Theory of Finite Fermi Systems based on the Energy Density Functional by Fayans et al. Two sets…

Nuclear Theory · Physics 2015-06-03 S. V. Tolokonnikov , S. Kamerdzhiev , D. Voitenkov , S. Krewald , E. E. Saperstein

A scheme is presented to find single-particle spectroscopic factors (SF) of magic and semimagic nuclei within the self-consistent theory of finite Fermi systems (TFFS). In addition to the energy dependence of the mass operator $\Sigma$…

Nuclear Theory · Physics 2015-06-22 N. V. Gnezdilov , E. E. Saperstein , S. V. Tolokonnikov

Starting from the quasiparticle random phase approximation based on the Skyrme interaction SLy5, we study the effects of phonon-phonon coupling~(PPC) on the low-energy electric dipole response in $^{40-58}$Ca. Using the same set of…

Nuclear Theory · Physics 2017-05-23 N. N. Arsenyev , A. P. Severyukhin , V. V. Voronov , Nguyen Van Giai

The self-consistent Theory of Finite Fermi Systems (TFFS) is consistently generalized for the case of accounting for phonon coupling (PC) effects in the energy region of pygmy- and giant multipole resonances (PDR and GMR) in magic nuclei…

Nuclear Theory · Physics 2021-03-04 Sergei Kamerdzhiev , Michael Shitov , Dimitri Voitenkov

A survey of some results in the modern microscopic theory of properties of nuclear reactions with gamma-rays is given. First of all, we discuss the impact of phonon coupling (PC) on the photon strength function (PSF) because it represents…

Nuclear Theory · Physics 2016-09-21 Sergei Kamerdzhiev , Oleg Achakovskiy , Alexander Avdeenkov , Stephane Goriely

Ground state quadrupole moments of odd-odd near double magic nuclei are calculated in the approximation of no interaction between odd particles. Under such a simple approximation, the problem is reduced to the calculations of quadrupole…

Nuclear Theory · Physics 2015-06-11 D. Voitenkov , O. Achakovskiy , S. Kamerdzhiev , S. Tolokonnikov

We present a model which describes the properties of odd-even nuclei with one nucleon more, or less, with respect to the magic number. In addition to the effects related to the unpaired nucleon, we consider those produced by the excitation…

Nuclear Theory · Physics 2015-09-16 G. Co' , V. De Donno , M. Anguiano , R. N. Bernard , A. M. Lallena

The properties of single-particle states in the magic nuclei $^{40}$Ca and $^{208}$Pb, in particular the energies, spectroscopic factors and the effective mass, have been studied in a fully self-consistent particle-vibration coupling (PVC)…

Nuclear Theory · Physics 2015-06-18 Li-Gang Cao , G. Colo , H. Sagawa , P. F. Bortignon

In order to analyse the role of the quasiparticle-phonon interaction in the origin of nuclear gap, we applied an approach which is similar to the Eliashberg theory for usual superconductors. We obtained that the averaged contribution of the…

Nuclear Theory · Physics 2017-08-23 A. V. Avdeenkov , S. P. Kamerdzhiev
‹ Prev 1 2 3 10 Next ›