24 citations · 176 across the 41 of their papers we have counts for
41 papers
Statistical analysis of the drying pattern of coffee
J. Cheraghalizadeh, S. Tizdast, N. Valizadeh +2
In this study, we experimentally study the dried pattern droplets of coffee with and without sugar. We statistically analyze the rough surface formed after the stain becomes dried.…
Sandpiles Subjected to Sinusoidal Drive
J. Cheraghalizadeh, M. A. Seifi MirJafarlou, M. N. Najafi
This paper considers a sandpile model subjected to a sinusoidal external drive with the time period . We develop a theoretical model for the Green function in a large limit,…
Mapping cumulus clouds to scale invariant rough surfaces
J. Cheraghalizadeh, S. Tizdast, H. Mohammadzade +1
Motivated by a recent observation on the self-organized criticality of cumulus clouds (Phys. Rev E 103, 052106, 2021) we study their connection to self-similar rough surfaces, in w…
Universal logarithmic correction to Rényi (Shannon) entropy in generic systems of critical quadratic fermions
Babak Tarighi, Reyhaneh Khasseh, M. N. Najafi +1
The Rényi (Shannon) entropy, i.e. , of the ground state of quantum systems in local bases normally show a volume-law behavior. For a subsystem of quantum chains at critic…
The Visibility Graphs of Correlated Time Series Violate the Barthelemy's Conjecture for Degree and Betweenness Centralities
H. Masoomy, M. N. Najafi
The problem of betweenness centrality remains a fundamental unsolved problem in complex networks. After a pioneering work by Barthelemy, it has been well-accepted that the maximal…
Multifractal analysis of Earthquakes in Central Alborz, Iran; A phenomenological self-organized critical Model
M. Rahimi-Majd, T. Shirzad, M. N. Najafi
This paper is devoted to a phenomenological study of the earthquakes in central Alborz, Iran. Using three observational quantities, namely weight function, quality factor, and velo…
Self-Repelling Bi-Exploration Process
H. Dashti N., M. N. Najafi, Hyunggyu Park
Self-repelling two-leg (biped) spider walk is considered where the local stochastic movements are governed by two independent control parameters and , so that the for…
Edwards-Wilkinson Depinning Transition in the Background of Random Coulomb Potential
N. Valizadeh, M. Samadpour, H. Hamzehpour +1
The Edwards-Wilkinson (EW) growth of interface is considered in the background of the correlated random noise. We use random Coulomb potential as the background long-range co…
Invasion percolation in short-range and long-range disorder background
M. N. Najafi, S. Tizdast, J. Cheraghalizadeh +1
In this paper, we investigate the invasion percolation (IP) in imperfect support in which the configuration of imperfections is considered to be correlated. Three lattice models we…
Self-similar but not conformally invariant traces obtained by modified Loewner forces
S. Tizdast, Z. Ebadi, J. Cheraghalizadeh +3
The two-dimensional Loewner exploration process is generalized to the case where the random force is self-similar with positively correlated increments. We model this random force…
Persistent Homology of Fractional Gaussian Noise
H. Masoomy, B. Askari, M. N. Najafi +1
In this paper, we employ the persistent homology (PH) technique to examine the topological properties of fractional Gaussian noise (fGn). We develop the weighted natural visibility…
Local and Non-local Fractional Porous Media Equations
Fatemeh Gharari, Karina Arias-Calluari, Fernando Alonso-Marroquin +1
Recently it was observed that the probability distribution of the price return in S\&P500 can be modeled by -Gaussian distributions, where various phases (weak, strong super dif…
Self-organized criticality in cumulus clouds
M. N. Najafi, J. Cheraghalizadeh, H. J. Herrmann
The shape of clouds has proven to be essential for classifying them. Our analysis of images from fair weather cumulus clouds reveals that, besides by turbulence they are driven by…
The intermediate fermionic species created by rotation in the representation of the Dirac equation
H. Moaiery, M. N. Najafi
The question of how does the Dirac equation depend on the choice of the matrices has partially been addressed and explored in the literature. In this paper we focus on this que…
Some Properties of Sandpile Models as Prototype of Self-Organized Critical Systems
M. N. Najafi, S. Tizdast, J. Cheraghalizadeh
This paper is devoted to the recent advances in self-organized criticality (SOC), and the concepts. The paper contains three parts; in the first part we present some examples of SO…
Two temperature Ising Model
J. Cheraghalizadeh, M. Seifi, Z. Ebadi +2
We introduce a two-temperature Ising model as a prototype of superstatistic critical phenomena. The model is described by two temperatures () in zero magnetic field. To pr…
Invasion Sandpile Model
M. N. Najafi, Z. Moghaddam, M. Samadpour +1
Motivated by multiphase flow in reservoirs, we propose and study a two-species sandpile model in two dimensions. A pile of particles becomes unstable and topples if, at least one o…
Dynamical Crossover in Invasion Percolation
S. Tizdast, N. Ahadpour, M. N. Najafi +2
The dynamical properties of the invasion percolation on the square lattice are investigated with emphasis on the geometrical properties on the growing cluster of infected sites. Th…
Deformed Boson Condensate as a Model of Dark Matter
Mahnaz Maleki, Hosein Mohammadzadeh, Zahra Ebadi +1
We consider the condensate of -deformed bosons as a model of dark matter. Our observations demonstrate that for all values, the system condenses below a -dependent critic…
Avalanches on the Complex Network of Rigan Earthquake, Virtual Seismometer Technique, Criticality and Seismic Cycle
M. N. Najafi, M. Rahimi-Majd, T. Shirzad
We base our study on the statistical analysis of the Rigan earthquake 2010 December 20, which consists of estimating the earthquake network by means of virtual seismometer techniqu…
Formation probabilities and statistics of observables as defect problems in the free fermions and the quantum spin chains
M. N. Najafi, M. A. Rajabpour
We show that the computation of formation probabilities (FP) in the configuration basis and the full counting statistics (FCS) of observables in the quadratic fermionic Hamiltonian…
Geometry-induced non-equilibrium phase transition in sandpiles
M. N. Najafi, J. Cheraghalizadeh, M. Lukovic +1
We study the sandpile model on three-dimensional spanning Ising clusters with the temperature treated as the control parameter. By analyzing the three dimensional avalanches an…
Stationarity of the detrended price return in stock markets
Karina Arias-Calluari, Morteza. N. Najafi, Michael S. Harré +1
This paper proposes a governing equation for stock market indexes that accounts for non-stationary effects. This is a linear Fokker-Planck equation (FPE) that describes the time ev…
Q-Gaussian diffusion in stock markets
Alonso-Marroquin Fernando, Arias-Calluari Karina, Harre Michael +2
We analyze the Standard & Poor's 500 stock market index from the last 22 years. The probability density function of price returns exhibits two well-distinguished regimes with self-…