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Information × Registration Number 0214U008698, 0111U009549 , R & D reports Title The development of methods of statistical physics and quantum field theory for the study of problems of condensed and gaseous media and field dynamics and supersymmetric elongated objects popup.stage_title Head Slyusarenko Yuri Viktorovych, Доктор фізико-математичних наук Registration Date 13-08-2014 Organization National Science Center "Kharkiv Institute of Physics & Technology" popup.description2 The pure and mixed quantum states of magnets with the spin s=1 are studied, for which the polarization density matrix is entered. The uniaxial and biaxial spin-quadrupolar orderings corresponding to a net magnetic states are obtained and the degree of polarization is calculated. The algebras of the Poisson brackets of the magnetic degrees of freedom are obtained and the types of organizing normal and degenerate equilibrium states associated with the existence of subalgebras in the Poisson brackets are clarified. The nonlinear dynamical equations of magnets with the spin s=1 for normal and degenerate nonequilibrium states with SU(3) symmetry Hamiltonian generalizing the equation of Landau-Lifshitz are derived. The spectra of collective magnetic excitations taking into account the damping is calculated. It is shown that the constructed Hamiltonian mechanics of high-spin magnetics is closely associated with the Fermi - and Bose - liquid description of such quantum objects. The spectrum of the elementary excitations in the Bose-systems with arbitrary values of wave numbers that have form of the Landau spectrum in superfluid helium is obtained. We studied the influence of interparticle attraction on the form of the dispersion curve. The influence of non-local effects on the structure of vortex filament in superfluid Bose gas is studied. Product Description popup.authors Іванченко Євген Олександрович Івашин Анатолій Петрович Водяницький Олександр Андрійович Гершун Віктор Дмитрович Желтухін Олександр Олександрович Ковалевський Михайло Юрійович Литвиненко Дмитро Михайлович Мариненко Олена Дмитрівна Мацкевич Валентина Тадеушівна Ніколаєнко Сергій Олександрович Пелетминский Олександр Сергійович Пелетминський Сергій Володимирович Слюсаренко Юрій Вікторович Тарасов Олександр Миколайович Уваров Дмитро В'ячеславович Шульга Сергій Миколайович popup.nrat_date 2020-04-02 Close