78 citations · 734 across the 44 of their papers we have counts for
30 papers · 1 filter
Activated dynamics in the quantum random field Ising model
Ivan Balog, Lovro Šaravanja, Andrei A. Fedorenko
We study the critical dynamics of the quantum random-field Ising model using the nonperturbative functional renormalization group (NP-FRG). The static critical behavior is found to…
Surface quantum critical phenomena in disordered Dirac semimetals
Eric Brillaux, Andrei A. Fedorenko, Ilya A. Gruzberg
We study a non-Anderson disorder driven quantum phase transition in a semi-infinite Dirac semimetal with a flat boundary. The conformally invariant boundary conditions, which inclu…
Possibility of a continuous phase transition in random-anisotropy magnets with ageneric random-axis distribution
Dmytro Shapoval, Maxym Dudka, Andrei A. Fedorenko +1
We reconsider the problem of the critical behavior of a three-dimensional symmetric magnetic system in the presence of random anisotropy disorder with a generic trimodal ran…
Depinning transition of charge-density waves: mapping onto symmetric theory with and loop-erased random walks
Kay Joerg Wiese, Andrei A. Fedorenko
Driven periodic elastic systems such as charge-density waves (CDWs) pinned by impurities show a non-trivial, glassy dynamical critical behavior. Their proper theoretical descriptio…
Multifractality at the Weyl semimetal-diffusive metal transition for generic disorder
Eric Brillaux, David Carpentier, Andrei A. Fedorenko
A Weyl semimetal is a three dimensional topological gapless phase. In the presence of strong enough disorder it undergoes a quantum transition towards a diffusive metal phase whose…
Disorder-driven quantum transition in relativistic semimetals: functional renormalization via the porous medium equation
Ivan Balog, David Carpentier, Andrei A. Fedorenko
In the presence of randomness, a relativistic semimetal undergoes a quantum transition towards a diffusive phase. A standard approach relates this transition to the Gross-Ne…
Wave function correlations and the AC conductivity of disordered wires beyond the Mott-Berezinskii law
G. M. Falco, Andrei A. Fedorenko, Ilya A. Gruzberg
In one-dimensional disordered wires electronic states are localized at any energy. Correlations of the states at close positive energies and the AC conductivity in the limit…
Emergent universal critical behavior of the 2D -color Ashkin-Teller model in the presence of correlated disorder
M. Dudka, A. A. Fedorenko
We study the critical behavior of the 2D -color Ashkin-Teller model in the presence of random bond disorder whose correlations decays with the distance as a power-law $r^{-a…
On functional determinants of matrix differential operators with multiple zero modes
G. M. Falco, Andrei A. Fedorenko, Ilya A. Gruzberg
We generalize the method of computing functional determinants with a single excluded zero eigenvalue developed by McKane and Tarlie to differential operators with multiple zero eig…
On the disorder-driven quantum transition in three-dimensional relativistic metals
Thibaud Louvet, David Carpentier, Andrei A. Fedorenko
The Weyl semimetals are topologically protected from a gap opening against weak disorder in three dimensions. However, a strong disorder drives this relativistic semimetal through…
Critical behavior of the 2D Ising model with long-range correlated disorder
Maxym Dudka, Andrei A. Fedorenko, Viktoria Blavatska +1
We study critical behavior of the diluted 2D Ising model in the presence of disorder correlations which decay algebraically with distance as . Mapping the problem onto…
Instanton theory for bosons in disordered speckle potential
G. M. Falco, Andrei A. Fedorenko
We study the tail of the spectrum for non-interacting bosons in a blue-detuned random speckle potential. Using an instanton approach we derive the asymptotic behavior of the densit…
Localization of spin waves in disordered quantum rotors
Alexei Andreanov, Andrei A. Fedorenko
We study the dynamics of excitations in a system of quantum rotors in the presence of random fields and random anisotropies. Below the lower critical dimension $d_{\mathrm{l…
Non-Gaussian effects and multifractality in the Bragg glass
Andrei A. Fedorenko, Pierre Le Doussal, Kay Joerg Wiese
We study, beyond the Gaussian approximation, the decay of the translational order correlation function for a d-dimensional scalar periodic elastic system in a disordered environmen…
Random field and random anisotropy O(N) spin systems with a free surface
Andrei A. Fedorenko
We study the surface scaling behavior of a semi-infinite -dimensional O(N) spin system in the presence of quenched random field and random anisotropy disorders. It is known that…
Density of states in an optical speckle potential
G. M. Falco, Andrei A. Fedorenko, Jacopo Giacomelli +1
We study the single particle density of states of a one-dimensional speckle potential, which is correlated and non-Gaussian. We consider both the repulsive and the attractive cases…
Non-linear sigma model study of magnetic dephasing in a mesoscopic spin glass
Andrei A. Fedorenko, David Carpentier
We propose a nonlinear sigma model for the description of quantum transport in a mesoscopic metallic conductor with magnetic impurities frozen in a spin glass phase. It accounts fo…
A functional renormalization group approach to systems with long-range correlated disorder
Andrei A. Fedorenko
We studied the statics and dynamics of elastic manifolds in disordered media with long-range correlated disorder using functional renormalization group (FRG). We identified differe…
Field theory conjecture for loop-erased random walks
Andrei A. Fedorenko, Pierre Le Doussal, Kay Joerg Wiese
We give evidence that the functional renormalization group (FRG), developed to study disordered systems, may provide a field theoretic description for the loop-erased random walk (…
Elastic systems with correlated disorder: Response to tilt and application to surface growth
Andrei A. Fedorenko
We study elastic systems such as interfaces or lattices pinned by correlated quenched disorder considering two different types of correlations: generalized columnar disorder and qu…
Long-range correlated random field and random anisotropy O(N) models: A functional renormalization group study
Andrei A. Fedorenko, Florian Kühnel
We study the long-distance behavior of the O(N) model in the presence of random fields and random anisotropies correlated as ~1/x^{d-sigma} for large separation x using the functio…
Statics and dynamics of elastic manifolds in media with long-range correlated disorder
Andrei A. Fedorenko, Pierre Le Doussal, Kay Joerg Wiese
We study the statics and dynamics of an elastic manifold in a disordered medium with quenched defects correlated as r^{-a} for large separation r. We derive the functional renormal…
Universal distribution of threshold forces at the depinning transition
Andrei A. Fedorenko, Pierre Le Doussal, Kay Joerg Wiese
We study the distribution of threshold forces at the depinning transition for an elastic system of finite size, driven by an external force in a disordered medium at zero temperatu…
Nonequilibrium critical relaxation in the presence of extended defects
Andrei A. Fedorenko
We study nonequilibrium critical relaxation properties of systems with quenched extended defects, correlated in dimensions and randomly distributed in the remaining d…