Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Sadovnikova V"'
Publikováno v:
EPJ Web of Conferences, Vol 66, p 09005 (2014)
We demonstrate that the sum rules of quantum chromodynamics provide a consistent formalism for solving various problems of nuclear physics.
Externí odkaz:
https://doaj.org/article/c15048b7d52a41ce9e8d7e2140065a5a
Autor:
Sadovnikova, V. A.
In isospin symmetric and asymmetric nuclear matter we study the structure functions connected with the zero sound excitations. In the simple model with Landau-Migdal quasiparticle interactions the density response $\Pi^R(\omega,k)$ of the nuclear mat
Externí odkaz:
http://arxiv.org/abs/2004.04971
Autor:
Sadovnikova, V. A.
Results for the frequencies of zero-sound excitations in the isospin asymmetric nuclear matter are presented for the different parameters of asymmetry -1\leq\beta\leq 1. The dispersion equations are constructed within the random phase approximation.
Externí odkaz:
http://arxiv.org/abs/1807.09580
We calculate the nucleon parameters in symmetric nuclear matter employing the QCD sum rules approach. We focus on the average energy per nucleon and study the equilibrium states of the matter. We treat the matter as a relativistic system of interacti
Externí odkaz:
http://arxiv.org/abs/1804.10031
Publikováno v:
Nuclear Physics A 968 (2017)350
We calculate the single-particle nucleon characteristics in symmetric nuclear matter with inclusion of the 3N and 4N interactions. We calculated the contribution of the 3N interactions earlier, now we add that of the 4N ones. The contribution of the
Externí odkaz:
http://arxiv.org/abs/1709.09837
We calculate the single-particle nucleon characteristics in symmetric nuclear matter with inclusion of the 3N interactions. The contribution of the 3N forces to the nucleon self energies are expressed in terms of the nonlocal scalar condensate (d=3)
Externí odkaz:
http://arxiv.org/abs/1605.03699
There was a general believe that the nucleon QCD sum rules which include only the quark loops and thus contain only the condensates of dimension d=3 and d=4 have only a trivial solution. We demonstrate that there is also a nontrivial solution. We sho
Externí odkaz:
http://arxiv.org/abs/1410.6282
Autor:
Ryskin, M. G., Sadovnikova, V. A.
We emphasize the role of the x dependence of the quark condensate <|\bar q(0)q(x)|> originated by the zero fermion modes in the instanton vacuum. The effect is not negligible since the inverse size of the instanton 1/\rho~600MeV is comparable with th
Externí odkaz:
http://arxiv.org/abs/1407.4967
Autor:
Drukarev, E. G., Sadovnikova, V. A.
We calculate the polarization operator of the nucleon current in the instanton medium. The medium (QCD vacuum) is assumed to be a composition of the instantons of large and small sizes. The former are described in terms of the local scalar condensate
Externí odkaz:
http://arxiv.org/abs/1407.2749
We suggest a somewhat indirect method for estimation of the nonlocal scalar quark condensate. The approach is based on analysis of the polarization operator of nucleon current in instanton medium.
Comment: 6 pages, 1 figure; corrected typos
Comment: 6 pages, 1 figure; corrected typos
Externí odkaz:
http://arxiv.org/abs/1405.6828