Articole ştiinţifice: Recent submissions

  • LUNGU, Viorelia (IJSSER, 2020)
    Both the society and personality are developing and changing under the influence of education. Whilst the accelerated pace of changes as well as the current issues of the society, confirm the challenges which the 21st ...
  • LUNGU, Viorelia (Universitatea de Stat din Tiraspol, 2020)
    Pentru unele state, se acordă un accent special anticipării competențelor, ca obiectiv politic de a crea un sistem de dezvoltare a competențelor necesar pe piața muncii. Anticiparea abilităților se realizează diferit, ...
  • REPIDA, Tatiana; LUNGU, Viorelia (Universitatea de Stat din Moldova, 2011)
    Today, the graduate education faces a number of problems to engage in employment. These problems can be solved through the involvement / collaboration of both universities and employers. Lack of cooperation that has led ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F. (AIP Publishing LLC, 2015)
    The nonequilibrium theory of strongly correlated systems is proposed theory which is grounded on the generalized Wick theorem. This theorem is employed for calculation of the thermal averages of the contour arranged products ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; CHEBOTAR’, I. D.; DIGOR, D. F. (Springer Nature Switzerland, 2011)
    We investigate the minimal model that takes orbital degrees of freedom into account: the degenerate two-orbital Hubbard model. Our consideration includes the intraatomic Coulomb interaction of two electrons with opposite ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (The Publishing House of the Romanian Academy, 2014)
    We develop a strong-coupling approach to investigate the Anderson-Holstein model with strong repulsion on impurity centers. We derive the relation between electron propagators and correlation functions and prove that for ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (AIP Publishing LLC, 2012)
    Diagrammatic analysis for normal state of Hubbard model proposed in our previous paper is generalized and used to investigate superconducting state of this model. We use the notion of charge quantum number to describe the ...
  • MOSKALENKO, V. A.; ENTEL, P.; DIGOR, D. F.; DOHOTARU, L. A.; CITRO, R. (Cornell Univesity, 2007)
    The strong electron correlations caused by Coulomb interaction of impurity electrons are taken into account. The infinite series of diagrams containing irreducible Green’s functions are summed. For symmetric Anderson model ...
  • MOSKALENKO, V. A.; ENTEL, P.; DIGOR, D. F.; DOHOTARU, L. A.; CITRO, R. (Cornell Univesity, 2007)
    The diagrammatic theory is proposed for the strongly correlated impurity Anderson model. The strongly correlated impurity electrons are hybridized with free conduction electrons. For this system the new diagrammatic approach ...
  • COJOCARU, S.; DOHOTARU, L. A.; MOSKALENKO, V. A. (American Scientific Publishers, 2012)
    The temperature dependence of the spontaneous magnetization in rectangular ferromagnetic nanostructures is derived in the framework of a quantum microscopic approach taking into account discreetness of excitation spectrum. ...
  • COJOCARU, S.; DOHOTARU, L. A.; MOSCALENCO, V. A. (Editura Academiei Române, 2013)
    We critically discuss the existing phenomenological description of experimental and numerical simulation data on temperature dependence of nanoparticle and nanocluster magnetization in the context of the recently proposed ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (Springer Nature Switzerland, 2014)
    We investigate the Anderson-Holstein model with strong repulsion of impurity electrons using a strongcoupling approximation. The strong electron-phonon interaction determines the formation of polarons with heavy clouds of ...
  • MOSKALENKO, V. A.; ENTEL, P.; DOHOTARU, L. A.; CITRO, R. (Springer Nature Switzerland, 2009)
    We propose a diagrammatic theory around the atomic limit for the normal state of the Anderson impurity model. The new diagram method is based on Wick’s theorem for conduction electrons and a generalized Wick’s theorem for ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A. (Springer Nature Switzerland, 2010)
    Diagrammatic theory for Periodic Anderson Model has been developed, supposing the Coulomb repulsion of f — localized electrons as a main parameter of the theory. f-Electrons are strongly correlated and c-conduction electrons ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A. (Springer Nature Switzerland, 2010)
    Diagrammatic approach proposed many years ago for strong correlated Hubbard model is developed for analyzing of the thermodynamic potential properties. The new exact relation between such renormalized quantities as ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (Cornell Univesity, 2010)
    Diagrammatic analysis for normal state of Hubbard model proposed in our previous paper[1] is generalized and used to investigate superconducting state of this model. We use the notion of charge quantum number to describe ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; DIGOR, D. F.; CEBOTARI, I. D. (Springer Nature Switzerland, 2014)
    We develop a diagram technique for investigating the twofold-degenerate Anderson impurity model in the normal state with the strong electronic correlations of d electrons of the impurity ion taken into account. We discuss ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; CITRO, R. (Springer Nature Switzerland, 2010)
    We develop a diagram theory for the periodic Anderson model assuming that the Coulomb repulsion of localized f electrons is the main parameter of the theory. The f electrons are strongly correlated and the c conduction ...
  • MOSKALENKO, V. A.; DOHOTARU, L. A.; CEBOTARI, I. D. (Springer Nature Switzerland, 2010)
    The diagram approach proposed many years ago for the strongly correlated Hubbard model is developed with the aim to analyze the thermodynamic potential properties. A new exact relation between renormalized quantities such ...
  • MOSKALENKO, V. A.; ENTEL, P.; DIGOR, D. F.; DOHOTARU, L. A. (Taylor & Francis, 2005)
    A special diagram technique recently proposed for strongly correlated electron systems is used to study the pecularities of a spindensity-wave (SDW) in competition with superconductivity. This method allows to formulate ...

Search DSpace


Advanced Search

Browse

My Account