22 citations · 63 across the 9 of their papers we have counts for
9 papers
Why SGD is not Brownian Motion: A New Perspective on Stochastic Dynamics
Igor Ignashin, Anna Radovskaya, Andrew Semenov +7
Stochastic Gradient Descent (SGD) is commonly modeled as a Langevin process, assuming that minibatch noise acts as Brownian motion. However, this approximation relies on a continuo…
Local quench within the Keldysh technique
A. A. Radovskaya, A. G. Semenov
The problem of quantum scalar field evolution after an instantaneous local perturbation (quench) is considered. A new approach to descriptions of a quench from an arbitrary initial…
Comment on the paper SciPost Phys. Core 6, 019 (2023) by João F. Melo (arXiv:2112.09119)
Anna Radovskaya, Andrew G. Semenov
In the paper by João F. Melo "The propagator matrix reloaded" (SciPost Phys. Core 6, 019 (2023), arXiv:2112.09119) the author provides a derivation of a formalism which includes in…
Semiclassical Approximation meets Keldysh-Schwinger diagrammatic technique: Scalar
A. A. Radovskaya, A. G. Semenov
We study the evolution of the non-equilibrium quantum fields from a highly excited initial state in two approaches: the standard Keldysh-Schwinger diagram technique and the semicla…
Quantum corrections to the Classical Statistical Approximation for the expanding quantum field
A. V. Leonidov, A. A. Radovskaya
We found the deviation of the equation of state from ultrarelativistic one due to quantum corrections for a nonequilibrium longitudinally expanding scalar field. Relaxation of high…
Applicability of the Wigner functional approach to evolution of quantum fields
Andrey Leonidov, Anna Radovskaya
Evolution of highly excited quantum field is considered in the framework of Keldysh formalism . It is demonstrated that leading order (LO) term of semiclassical approximation appea…
On formation of equation of state of evolving quantum field
A. V. Leonidov, A. A. Radovskaya
Stylized model of evolution of matter created in ultra relativistic heavy ion collisions is considered. Systematic procedure of computing quantum corrections in the framework of Ke…
Scaling laws for the elastic scattering amplitude
I. M. Dremin, A. A. Radovskaya
The partial differential equation for the imaginary part of the elastic scattering amplitude is derived. It is solved in the black disk limit. The asymptotical scaling behavior of…
Radiative corrections to the spectra of heavy particles annihilation into leptons: Dark matter implementation
A. A. Radovskaya, E. A. Kuraev
We calculate the radiative corrections to the annihilation of the Dark Matter particles into leptons. Lepton masses are taken into account. As the Dark Matter particles are conside…