Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Lucivjansky, T."'
Publikováno v:
Theor Math Phys 216, 1349-1359 (2023)
By means of the field-theoretic renormalization group, we study the damping of the viscosity coefficient near the superfluid phase transition. We utilize the fact that in the infrared region, the complex model used to describe the phase transition be
Externí odkaz:
http://arxiv.org/abs/2305.10094
Publikováno v:
Acta Phys. Pol. A 137(5), 628 (2020)
An effective-field theory based on the single-spin cluster has been used to study of a diluted spin-$1/2$ Ising antiferromagnet on the Kagome lattice with nearest-neighbor interactions. We observe five plateaus in the magnetization curve of the dilut
Externí odkaz:
http://arxiv.org/abs/1905.07274
Publikováno v:
Theor. Math. Phys. 200, (2019) 1335
The paradigmatic model of the directed percolation process is studied near its second order phase transition between an absorbing and an active state. The model is first expressed in a form of Langevin equation and later rewritten into a field-theore
Externí odkaz:
http://arxiv.org/abs/1905.01237
Publikováno v:
Theor. Math. Phys. 200, (2019), 1294
Advection-diffusion problems of magnetic field and tracer field are analyzed using the field theoretic perturbative renormalization group. Both advected fields are considered to be passive, i.e., without any influence on the turbulent environment, an
Externí odkaz:
http://arxiv.org/abs/1904.08711
A model of fully developed turbulence of a compressible fluid is briefly reviewed. It is assumed that fluid dynamics is governed by a stochastic version of Navier-Stokes equation. We show how corresponding field theoretic-model can be obtained and fu
Externí odkaz:
http://arxiv.org/abs/1810.03462
Publikováno v:
Eur. Phys. J. B (2018) 91: 269
Motivated by the ubiquity of turbulent flows in realistic conditions, effects of turbulent advection on two models of classical non-linear systems are investigated. In particular, we analyze model A (according to the Hohenberg-Halperin classification
Externí odkaz:
http://arxiv.org/abs/1809.03781
Publikováno v:
Phys. Rev. E 97, 022123 (2018)
Universal behavior is a typical emergent feature of critical systems. A paramount model of the non-equilibrium critical behavior is the directed bond percolation process that exhibits an active- to-absorbing state phase transition in the vicinity of
Externí odkaz:
http://arxiv.org/abs/1802.02036
Publikováno v:
EPJ Web of Conferences 164, 07044 (2017)
The renormalization group approach and the operator product expansion technique are applied to the model of a tracer field advected by the Navier-Stokes velocity ensemble for a compressible fluid. The model is considered in the vicinity of the specif
Externí odkaz:
http://arxiv.org/abs/1710.03648
Publikováno v:
EPJ Web of Conferences 137, 1000 3 (2017)
The field theoretic renormalization group (RG) and the operator product expansion (OPE) are applied to the model of a density field advected by a random turbulent velocity field. The latter is governed by the stochastic Navier-Stokes equation for a c
Externí odkaz:
http://arxiv.org/abs/1611.03708
Publikováno v:
EPJ Web of Conferences {\bf 125}, 05006 (2016)
We study scaling properties of the model of fully developed turbulence for a compressible fluid, based on the stochastic Navier-Stokes equation, by means of the field theoretic renormalization group (RG). The scaling properties in this approach are r
Externí odkaz:
http://arxiv.org/abs/1611.01302