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- National Academy of Sciences of UkraineUA230 papers
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14 papers · 1 filter
Thermodynamic relation for the systems with inhomogeneous distribution of particles
A. P. Rebesh, B. I. Lev, A. G. Zagorodny
For the system with inhomogeneous distribution of macroscopic parameters we obtain thermodynamic relation which depends on the spatial point (coordinate). In our approach, to obtai…
Scaling behavior and phases of nonlinear sigma model on real Stiefel manifolds near two dimensions
A. M. Gavrilik, A. V. Nazarenko
For a quasi-two-dimensional nonlinear sigma model on the real Stiefel manifolds with a generalized (anisotropic) metric, the equations of a two-charge renormalization group (RG) fo…
On the Dynamics of Free-Fermionic Tau-Functions at Finite Temperature
Daniel Chernowitz, Oleksandr Gamayun
In this work we explore an instance of the -function of vertex type operators, specified in terms of a constant phase shift in a free-fermionic basis. From the physical point of…
Effective free-fermionic form factors and the XY spin chain
O. Gamayun, N. Iorgov, Yu. Zhuravlev
We introduce effective form factors for one-dimensional lattice fermions with arbitrary phase shifts. We study tau functions defined as series of these form factors. On the one han…
Electromagnetic field energy in an absorptive medium with temporal and spatial dispersion
A. G. Zagorodny, S. A. Trigger, A. I. Momot
General relations for electromagnetic field energy outside the transparency domain are proposed. It is shown that charged particle contribution to the energy of electromagnetic per…
Ultrasonic waves in classical gases
A. G. Magner, M. I. Gorenstein, U. V. Grygoriev
The velocity and absorption coefficient for the plane sound waves in a classical gas are obtained by solving the Boltzmann kinetic equation, which describes the reaction of the sin…