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- N V Antonov, J Honkonen
- Physical review. E, Statistical, nonlinear, and…
- 2001

The problem of the effects of compressibility and large-scale anisotropy on anomalous scaling behavior is considered for two models describing passive advection of scalar density and tracer fields. The advecting velocity field is Gaussian, delta correlated in time, and scales with a positive exponent epsilon. Explicit inertial-range expressions for the… (More)

- N V Antonov, Juha Honkonen
- Physical review. E, Statistical, nonlinear, and…
- 2002

This paper is an attempt to relate two vast areas of the applicability of the renormalization group (RG): field-theoretic models and partial differential equations. It is shown that the Green function of a nonlinear diffusion equation can be viewed as a correlation function in a field-theoretic model with an ultralocal term, concentrated at a space-time… (More)

- N V Antonov, Michal Hnatich, Juha Honkonen, Marian Jurcisin
- Physical review. E, Statistical, nonlinear, and…
- 2003

The field theoretic renormalization group (RG) and the operator-product expansion are applied to the model of a transverse (divergence-free) vector quantity, passively advected by the "synthetic" turbulent flow with a finite (and not small) correlation time. The vector field is described by the stochastic advection-diffusion equation with the most general… (More)

- L Ts Adzhemyan, J Honkonen, M V Kompaniets, A N Vasil'ev
- Physical review. E, Statistical, nonlinear, and…
- 2005

An improved epsilon expansion in the d -dimensional (d > 2) stochastic theory of turbulence is constructed at two-loop order, which incorporates the effect of pole singularities at d--> 2 in coefficients of the epsilon expansion of universal quantities. For a proper account of the effect of these singularities, two different approaches to the… (More)

- Michal Hnatic, Juha Honkonen, Tomás Lucivjanský
- MMCP
- 2011

- Juha Honkonen
- 2004

Instanton analysis is applied to models B—H of critical dynamics. It is shown that the static instanton of the massless φ4 model determines the large-order asymptotes of the perturbation expansion of these near-equilibrium dynamic models leading to factorial growth with the order of perturbation theory.

- L Ts Adzhemyan, N V Antonov, J Honkonen, T L Kim
- Physical review. E, Statistical, nonlinear, and…
- 2005

The field theoretic renormalization group and operator-product expansion are applied to the model of a passive scalar quantity advected by a non-Gaussian velocity field with finite correlation time. The velocity is governed by the Navier-Stokes equation, subject to an external random stirring force with the correlation function proportional to delta(t-… (More)

- Juha Honkonen
- MMCP
- 2011

- Juha Honkonen
- 2004

Instanton analysis is applied to model A of critical dynamics. It is shown that the static instanton of the massless φ4 model determines the large-order asymptotes of the perturbation expansion of the dynamic model.

- L Ts Adzhemyan, N V Antonov, J Honkonen
- Physical review. E, Statistical, nonlinear, and…
- 2002

The renormalization group and operator product expansion are applied to the model of a passive scalar quantity advected by the Gaussian self-similar velocity field with finite, and not small, correlation time. The inertial-range energy spectrum of the velocity is chosen in the form E(k) proportional, variant k(1-2 epsilon ), and the correlation time at the… (More)