107 citations · 389 across the 13 of their papers we have counts for
13 papers
Geometry of rare regions behind Griffiths singularities in random quantum magnets
István A. Kovács, Ferenc Iglói
In many-body systems with quenched disorder, dynamical observables can be singular not only at the critical point, but in an extended region of the paramagnetic phase as well. Thes…
Correlated clusters of closed reaction centers during induction of intact cells of photosynthetic bacteria
Peter Maroti, Istvan A. Kovacs, Mariann Kis +2
Antenna systems serve to absorb light and to transmit excitation energy to the reaction center (RC) in photosynthetic organisms. As the emitted (bacterio)chlorophyll fluorescence c…
Scaling of local persistence in the disordered contact process
Róbert Juhász, István A. Kovács
We study the time-dependence of the local persistence probability during a non-stationary time evolution in the disordered contact process in , and dimensions. We presen…
Long-range epidemic spreading in a random environment
R. Juhász, I. A. Kovács, F. Iglói
Modeling long-range epidemic spreading in a random environment, we consider a quenched disordered, -dimensional contact process with infection rates decaying with the distance a…
Excess entropy and central charge of the two-dimensional random-bond Potts model in the large-Q limit
István A. Kovács, Jean-Christian Anglès d'Auriac, Ferenc Iglói
We consider the random-bond Potts model in the large- limit and calculate the excess entropy, , of a contour, , which is given by the mean number of Fortuin-Kasteleyn cl…
Corner contribution to percolation cluster numbers in three dimensions
Istvan A. Kovacs, Ferenc Igloi
In three-dimensional critical percolation we study numerically the number of clusters, , which intersect a given subset of bonds, . If represents the interface between…
Infinite randomness critical behavior of the contact process on networks with long-range connections
R. Juhász, I. A. Kovács
The contact process and the slightly different susceptible-infected-susceptible model are studied on long-range connected networks in the presence of random transition rates by mea…
Renormalization group study of random quantum magnets
István A. Kovács, Ferenc Iglói
We have developed a very efficient numerical algorithm of the strong disorder renormalization group method to study the critical behaviour of the random transverse-field Ising mode…
Infinite disorder scaling of random quantum magnets in three and higher dimensions
Istvan A. Kovacs, Ferenc Igloi
Using a very efficient numerical algorithm of the strong disorder renormalization group method we have extended the investigations about the critical behavior of the random transve…
Renormalization group study of the two-dimensional random transverse-field Ising model
Istvan A. Kovacs, Ferenc Igloi
The infinite disorder fixed point of the random transverse-field Ising model is expected to control the critical behavior of a large class of random quantum and stochastic systems…
Critical behavior and entanglement of the random transverse-field Ising model between one and two dimensions
Istvan A. Kovacs, Ferenc Igloi
We consider disordered ladders of the transverse-field Ising model and study their critical properties and entanglement entropy for varying width, , by numerical applicat…
Density of critical clusters in strips of strongly disordered systems
M. Karsai, I. A. Kovacs, J-Ch. Angles d'Auriac +1
We consider two models with disorder dominated critical points and study the distribution of clusters which are confined in strips and touch one or both boundaries. For the classic…
The Random-bond Potts model in the large-q limit
Robert Juhasz, Heiko Rieger, Ferenc Igloi
We study the critical behavior of the q-state Potts model with random ferromagnetic couplings. Working with the cluster representation the partition sum of the model in the large-q…