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Quantitative field theory of the glass transition: We develop a full microscopic replica field theory of the dynamical
transition in glasses. By studying the soft modes that appear at the dynamical
temperature we obtain an effective theory for the critical fluctuations. This
analysis leads to several results: we give e... | cond-mat_dis-nn |
Critical indices of Anderson transition: something is wrong with
numerical results: Numerical results for Anderson transition are critically discussed. A simple
procedure to deal with corrections to scaling is suggested. With real
uncertainties taken into account, the raw data are in agreement with a value
$\nu=1$ fo... | cond-mat_dis-nn |
A Generalized Rate Model for Neuronal Ensembles: There has been a long-standing controversy whether information in neuronal
networks is carried by the firing rate code or by the firing temporal code. The
current status of the rivalry between the two codes is briefly reviewed with
the recent studies such as the brain-ma... | cond-mat_dis-nn |
Statistical Properties of Ideal Ensemble of Disordered 1D Steric
Spin-Chains: The statistical properties of ensemble of disordered 1D steric spin-chains
(SSC) of various length are investigated. Using 1D spin-glass type classical
Hamiltonian, the recurrent trigonometrical equations for stationary points and
correspon... | cond-mat_dis-nn |
Mean field treatment of exclusion processes with random-force disorder: The asymmetric simple exclusion process with random-force disorder is studied
within the mean field approximation. The stationary current through a domain
with reversed bias is analyzed and the results are found to be in accordance
with earlier int... | cond-mat_dis-nn |
Statistical Properties of the one dimensional Anderson model relevant
for the Nonlinear Schrödinger Equation in a random potential: The statistical properties of overlap sums of groups of four eigenfunctions
of the Anderson model for localization as well as combinations of four
eigenenergies are computed. Some of the... | cond-mat_dis-nn |
Antiferromagnetic effects in Chaotic Map lattices with a conservation
law: Some results about phase separation in coupled map lattices satisfying a
conservation law are presented. It is shown that this constraint is the origin
of interesting antiferromagnetic effective couplings and allows transitions to
antiferromag... | cond-mat_dis-nn |
Disordered and ordered states of exactly solvable Ising-Heisenberg
planar models with a spatial anisotropy: Ground-state and finite-temperature properties of a special class of exactly
solvable Ising-Heisenberg planar models are examined using the generalized
decoration-iteration and star-triangle mapping transformat... | cond-mat_dis-nn |
Geometrical organization of solutions to random linear Boolean equations: The random XORSAT problem deals with large random linear systems of Boolean
variables. The difficulty of such problems is controlled by the ratio of number
of equations to number of variables. It is known that in some range of values
of this para... | cond-mat_dis-nn |
Random sequential adsorption of shrinking or spreading particles: We present a model of one-dimensional irreversible adsorption in which
particles once adsorbed immediately shrink to a smaller size or expand to a
larger size. Exact solutions for the fill factor and the particle number
variance as a function of the size... | cond-mat_dis-nn |
Anomalous Roughening in Experiments of Interfaces in Hele-Shaw Flows
with Strong Quenched Disorder: We report experimental evidences of anomalous kinetic roughening in the
stable displacement of an oil-air interface in a Hele-Shaw cell with strong
quenched disorder. The disorder consists on a random modulation of the... | cond-mat_dis-nn |
On the mechanical beta relaxation in glass and its relation to the
double-peak phenomenon in impulse excited vibration at high temperatures: A viscoelastic model is established to reveal the relation between alpha-beta
relaxation of glass and the double-peak phenomenon in the experiments of
impulse excited vibration.... | cond-mat_dis-nn |
Dependence of critical parameters of 2D Ising model on lattice size: For the 2D Ising model, we analyzed dependences of thermodynamic
characteristics on number of spins by means of computer simulations. We
compared experimental data obtained using the Fisher-Kasteleyn algorithm on a
square lattice with $N=l{\times}l$ s... | cond-mat_dis-nn |
k-Core percolation on multiplex networks: We generalize the theory of k-core percolation on complex networks to k-core
percolation on multiplex networks, where k=(k_a, k_b, ...). Multiplex networks
can be defined as networks with a set of vertices but different types of edges,
a, b, ..., representing different types of... | cond-mat_dis-nn |
The replica symmetric region in the Sherrington-Kirkpatrick mean field
spin glass model. The Almeida-Thouless line: In previous work, we have developed a simple method to study the behavior of
the Sherrington-Kirkpatrick mean field spin glass model for high temperatures,
or equivalently for high external fields. The ... | cond-mat_dis-nn |
Liquid markets and market liquids: collective and single-asset dynamics
in financial markets: We characterize the collective phenomena of a liquid market. By interpreting
the behavior of a no-arbitrage N asset market in terms of a particle system
scenario, (thermo)dynamical-like properties can be extracted from the a... | cond-mat_dis-nn |
A Mean-field Approach for an Intercarrier Interference Canceller for
OFDM: The similarity of the mathematical description of random-field spin systems
to orthogonal frequency-division multiplexing (OFDM) scheme for wireless
communication is exploited in an intercarrier-interference (ICI) canceller used
in the demodul... | cond-mat_dis-nn |
Statistical Design of Chaotic Waveforms with Enhanced Targeting
Capabilities: We develop a statistical theory of waveform shaping of incident waves that
aim to efficiently deliver energy at weakly lossy targets which are embedded
inside chaotic enclosures. Our approach utilizes the universal features of
chaotic scatt... | cond-mat_dis-nn |
Critical behavior of a cellular automaton highway traffic model: We derive the critical behavior of a CA traffic flow model using an order
parameter breaking the symmetry of the jam-free phase. Random braking appears
to be the symmetry-breaking field conjugate to the order parameter. For
$v_{\max}=2$, we determine the ... | cond-mat_dis-nn |
Entropy of complex relevant components of Boolean networks: Boolean network models of strongly connected modules are capable of capturing
the high regulatory complexity of many biological gene regulatory circuits. We
study numerically the previously introduced basin entropy, a parameter for the
dynamical uncertainty or... | cond-mat_dis-nn |
The metastable minima of the Heisenberg spin glass in a random magnetic
field: We have studied zero temperature metastable states in classical $m$-vector
component spin glasses in the presence of $m$-component random fields (of
strength $h_{r}$) for a variety of models, including the Sherrington
Kirkpatrick (SK) mode... | cond-mat_dis-nn |
A theoretical model of neuronal population coding of stimuli with both
continuous and discrete dimensions: In a recent study the initial rise of the mutual information between the
firing rates of N neurons and a set of p discrete stimuli has been analytically
evaluated, under the assumption that neurons fire independ... | cond-mat_dis-nn |
Cascading Parity-Check Error-Correcting Codes: A method for improving the performance of sparse-matrix based parity check
codes is proposed, based on insight gained from methods of statistical physics.
The advantages of the new approach are demonstrated on an existing
encoding/decoding paradigm suggested by Sourlas. We... | cond-mat_dis-nn |
Absorbing phase transitions in a non-conserving sandpile model: We introduce and study a non-conserving sandpile model, the autonomously
adapting sandpile (AAS) model, for which a site topples whenever it has two or
more grains, distributing three or two grains randomly on its neighboring
sites, respectively with proba... | cond-mat_dis-nn |
Single crystal growth and study of the magnetic properties of the mixed
spin-dimer system Ba$_{3-x}$Sr$_{x}$Cr$_{2}$O$_{8}$: The compounds Sr$_{3}$Cr$_{2}$O$_{8}$ and Ba$_{3}$Cr$_{2}$O$_{8}$ are
insulating dimerized antiferromagnets with Cr$^{5+}$ magnetic ions. These
spin-$\frac{1}{2}$ ions form hexagonal bilayers w... | cond-mat_dis-nn |
Selberg integrals in 1D random Euclidean optimization problems: We consider a set of Euclidean optimization problems in one dimension, where
the cost function associated to the couple of points $x$ and $y$ is the
Euclidean distance between them to an arbitrary power $p\ge1$, and the points
are chosen at random with fla... | cond-mat_dis-nn |
Inflation versus projection sets in aperiodic systems: The role of the
window in averaging and diffraction: Tilings based on the cut and project method are key model systems for the
description of aperiodic solids. Typically, quantities of interest in
crystallography involve averaging over large patches, and are well... | cond-mat_dis-nn |
The complex dynamics of memristive circuits: analytical results and
universal slow relaxation: Networks with memristive elements (resistors with memory) are being explored
for a variety of applications ranging from unconventional computing to models
of the brain. However, analytical results that highlight the role of... | cond-mat_dis-nn |
Spin Glasses: An introduction and overview is given of the theory of spin glasses and its
application. | cond-mat_dis-nn |
Spatio-temporal correlations in Wigner molecules: The dynamical response of Coulomb-interacting particles in nano-clusters are
analyzed at different temperatures characterizing their solid- and liquid-like
behavior. Depending on the trap-symmetry, both the spatial and temporal
correlations undergo slow, stretched expon... | cond-mat_dis-nn |
Phase Ordering and Onset of Collective Behavior in Chaotic Coupled Map
Lattices: The phase ordering properties of lattices of band-chaotic maps coupled
diffusively with some coupling strength $g$ are studied in order to determine
the limit value $g_e$ beyond which multistability disappears and non-trivial
collective ... | cond-mat_dis-nn |
Fate of Quadratic Band Crossing under quasiperiodic modulation: We study the fate of two-dimensional quadratic band crossing topological
phases under a one-dimensional quasiperiodic modulation. By employing
numerically exact methods, we fully characterize the phase diagram of the model
in terms of spectral, localizatio... | cond-mat_dis-nn |
Quantum Annealing: from Viewpoints of Statistical Physics, Condensed
Matter Physics, and Computational Physics: In this paper, we review some features of quantum annealing and related
topics from viewpoints of statistical physics, condensed matter physics, and
computational physics. We can obtain a better solution of... | cond-mat_dis-nn |
Power law hopping of single particles in one-dimensional non-Hermitian
quasicrystals: In this paper, a non-Hermitian Aubry-Andr\'e-Harper model with power-law
hoppings ($1/s^{a}$) and quasiperiodic parameter $\beta$ is studied, where $a$
is the power-law index, $s$ is the hopping distance, and $\beta$ is a member of
... | cond-mat_dis-nn |
Universal spectral form factor for many-body localization: We theoretically study correlations present deep in the spectrum of
many-body-localized systems. An exact analytical expression for the spectral
form factor of Poisson spectra can be obtained and is shown to agree well with
numerical results on two models exhib... | cond-mat_dis-nn |
Wannier band transitions in disordered $π$-flux ladders: Boundary obstructed topological insulators are an unusual class of
higher-order topological insulators with topological characteristics determined
by the so-called Wannier bands. Boundary obstructed phases can harbor
hinge/corner modes, but these modes can often ... | cond-mat_dis-nn |
Criticality and Chaos in Systems of Communities: We consider a simple model of communities interacting via bilinear terms.
After analyzing the thermal equilibrium case, which can be described by an
Hamiltonian, we introduce the dynamics that, for Ising-like variables, reduces
to a Glauber-like dynamics. We analyze and ... | cond-mat_dis-nn |
Simulation of multi-shell fullerenes using Machine-Learning Gaussian
Approximation Potential: Multi-shell fullerenes "buckyonions" were simulated, starting from initially
random configurations, using a density-functional-theory (DFT)-trained
machine-learning carbon potential within the Gaussian Approximation Potentia... | cond-mat_dis-nn |
Context-dependent representation in recurrent neural networks: In order to assess the short-term memory performance of non-linear random
neural networks, we introduce a measure to quantify the dependence of a neural
representation upon the past context. We study this measure both numerically
and theoretically using the... | cond-mat_dis-nn |
Signatures of Many-Body Localization in the Dynamics of Two-Level
Systems in Glasses: We investigate the quantum dynamics of Two-Level Systems (TLS) in glasses at
low temperatures (1 K and below). We study an ensemble of TLSs coupled to
phonons. By integrating out the phonons within the framework of the
Gorini-Kossak... | cond-mat_dis-nn |
Critical properties of the measurement-induced transition in random
quantum circuits: We numerically study the measurement-driven quantum phase transition of
Haar-random quantum circuits in $1+1$ dimensions. By analyzing the tripartite
mutual information we are able to make a precise estimate of the critical
measurem... | cond-mat_dis-nn |
On the Effects of Changing the Boundary Conditions on the Ground State
of Ising Spin Glasses: We compute and analyze couples of ground states of 3D spin glass systems with
the same quenched noise but periodic and anti-periodic boundary conditions for
different lattice sizes. We discuss the possible different behavior... | cond-mat_dis-nn |
Comment on ``Both site and link overlap distributions are non trivial in
3-dimensional Ising spin glasses'', cond-mat/0608535v2: We comment on recent numerical experiments by G.Hed and E.Domany
[cond-mat/0608535v2] on the quenched equilibrium state of the Edwards-Anderson
spin glass model. The rigorous proof of overl... | cond-mat_dis-nn |
Intermittency of dynamical phases in a quantum spin glass: Answering the question of existence of efficient quantum algorithms for
NP-hard problems require deep theoretical understanding of the properties of
the low-energy eigenstates and long-time coherent dynamics in quantum spin
glasses. We discovered and described ... | cond-mat_dis-nn |
Infinite-disorder critical points of models with stretched exponential
interactions: We show that an interaction decaying as a stretched exponential function of
the distance, $J(l)\sim e^{-cl^a}$, is able to alter the universality class of
short-range systems having an infinite-disorder critical point. To do so, we
s... | cond-mat_dis-nn |
Fractal dimension of domain walls in two-dimensional Ising spin glasses: We study domain walls in 2d Ising spin glasses in terms of a minimum-weight
path problem. Using this approach, large systems can be treated exactly. Our
focus is on the fractal dimension $d_f$ of domain walls, which describes via
$<\ell >\simL^{d_... | cond-mat_dis-nn |
Information propagation in isolated quantum systems: Entanglement growth and out-of-time-order correlators (OTOC) are used to
assess the propagation of information in isolated quantum systems. In this
work, using large scale exact time-evolution we show that for weakly disordered
nonintegrable systems information propa... | cond-mat_dis-nn |
The unreasonable effectiveness of tree-based theory for networks with
clustering: We demonstrate that a tree-based theory for various dynamical processes
yields extremely accurate results for several networks with high levels of
clustering. We find that such a theory works well as long as the mean
intervertex distanc... | cond-mat_dis-nn |
Energy transport in a disordered spin chain with broken U(1) symmetry:
Diffusion, subdiffusion, and many-body localization: We explore the physics of the disordered XYZ spin chain using two
complementary numerical techniques: exact diagonalization (ED) on chains of up
to 17 spins, and time-evolving block decimation (... | cond-mat_dis-nn |
Competitive cluster growth in complex networks: Understanding the process by which the individuals of a society make up their
minds and reach opinions about different issues can be of fundamental
importance. In this work we propose an idealized model for competitive cluster
growth in complex networks. Each cluster can ... | cond-mat_dis-nn |
Classical magnetotransport of inhomogeneous conductors: We present a model of magnetotransport of inhomogeneous conductors based on
an array of coupled four-terminal elements. We show that this model generically
yields non-saturating magnetoresistance at large fields. We also discuss how
this approach simplifies finite... | cond-mat_dis-nn |
Phase Diagram of mixed bond Ising systems by use of Monte Carlo and the
effective-field theory: The phase transition of a random mixed-bond Ising ferromagnet on a cubic
lattice model is studied both numerically and analytically. In this work, we
use the Cluster algorithms of Wolff and Glauber to simulate the dynamics... | cond-mat_dis-nn |
Statistics of energy levels and eigenfunctions in disordered and chaotic
systems: Supersymmetry approach: The supersymmetry method has proven to be a very powerful tool of study of
the statistical properties of energy levels and eigenfunctions in disordered
and chaotic systems. The aim of these lectures is to present... | cond-mat_dis-nn |
Improved algorithm for neuronal ensemble inference by Monte Carlo method: Neuronal ensemble inference is one of the significant problems in the study
of biological neural networks. Various methods have been proposed for ensemble
inference from their activity data taken experimentally. Here we focus on
Bayesian inferenc... | cond-mat_dis-nn |
Molecular neuron based on the Franck-Condon blockade: Electronic realizations of neurons are of great interest as building blocks
for neuromorphic computation. Electronic neurons should send signals into the
input and output lines when subject to an input signal exceeding a given
threshold, in such a way that they may ... | cond-mat_dis-nn |
Apparent slow dynamics in the ergodic phase of a driven many-body
localized system without extensive conserved quantities: We numerically study the dynamics on the ergodic side of the many-body
localization transition in a periodically driven Floquet model with no global
conservation laws. We describe and employ a nu... | cond-mat_dis-nn |
One step replica symmetry breaking and overlaps between two temperatures: We obtain an exact analytic expression for the average distribution, in the
thermodynamic limit, of overlaps between two copies of the same random energy
model (REM) at different temperatures. We quantify the non-self averaging
effects and provid... | cond-mat_dis-nn |
A conjectured scenario for order-parameter fluctuations in spin glasses: We study order-parameter fluctuations (OPF) in disordered systems by
considering the behavior of some recently introduced paramaters $G,G_c$ which
have proven very useful to locate phase transitions. We prove that both
parameters G (for disconnect... | cond-mat_dis-nn |
Experimental study of the effect of disorder on subcritical crack growth
dynamics: The growth dynamics of a single crack in a heterogeneous material under
subcritical loading is an intermittent process; and many features of this
dynamics have been shown to agree with simple models of thermally activated
rupture. In o... | cond-mat_dis-nn |
A statistical-mechanical approach to CDMA multiuser detection:
propagating beliefs in a densely connected graph: The task of CDMA multiuser detection is to simultaneously estimate binary
symbols of $K$ synchronous users from the received $N$ base-band CDMA signals.
Mathematically, this can be formulated as an inferen... | cond-mat_dis-nn |
Chemical order lifetimes in liquids in the energy landscape paradigm: Recent efforts to deal with the complexities of the liquid state,
particularly those of glassforming systems, have focused on the "energy
landscape" as a means of dealing with the collective variables problem [1]. The
"basins of attraction" that cons... | cond-mat_dis-nn |
Analytic Solution to Clustering Coefficients on Weighted Networks: Clustering coefficient is an important topological feature of complex
networks. It is, however, an open question to give out its analytic expression
on weighted networks yet. Here we applied an extended mean-field approach to
investigate clustering coef... | cond-mat_dis-nn |
Water Droplet Avalanches: We analyze the statistics of water droplet avalanches in a continuously
driven system. Distributions are obtained for avalanche size, lifetime, and
time between successive avalanches, along with power spectra and return maps.
For low flow rates and different water viscosities, we observe a pow... | cond-mat_dis-nn |
Structural and Energetic Heterogeneity in Protein Folding: A general theoretical framework is developed using free energy functional
methods to understand the effects of heterogeneity in the folding of a
well-designed protein. Native energetic heterogeneity arising from
non-uniformity in native stability, as well as en... | cond-mat_dis-nn |
Spin-charge separation and many-body localization: We study many-body localization for a disordered chain of spin 1/2 fermions.
In [Phys. Rev. B \textbf{94}, 241104 (2016)], when both down and up components
are exposed to the same strong disorder, the authors observe a power law growth
of the entanglement entropy that ... | cond-mat_dis-nn |
Stretched Exponential Relaxation on the Hypercube and the Glass
Transition: We study random walks on the dilute hypercube using an exact enumeration
Master equation technique, which is much more efficient than Monte Carlo
methods for this problem. For each dilution $p$ the form of the relaxation of
the memory functio... | cond-mat_dis-nn |
Exciton Dephasing and Thermal Line Broadening in Molecular Aggregates: Using a model of Frenkel excitons coupled to a bath of acoustic phonons in
the host medium, we study the temperature dependence of the dephasing rates and
homogeneous line width in linear molecular aggregates. The model includes
localization by diso... | cond-mat_dis-nn |
Aging dynamics of ferromagnetic and reentrant spin glass phases in
stage-2 Cu$_{0.80}$C$_{0.20}$Cl$_{2}$ graphite intercalation compound: Aging dynamics of a reentrant ferromagnet stage-2
Cu$_{0.8}$Co$_{0.2}$Cl$_{2}$ graphite intercalation compound has been studied
using DC magnetic susceptibility. This compound unde... | cond-mat_dis-nn |
A Mutual Attraction Model for Both Assortative and Disassortative
Weighted Networks: In most networks, the connection between a pair of nodes is the result of
their mutual affinity and attachment. In this letter, we will propose a Mutual
Attraction Model to characterize weighted evolving networks. By introducing the
... | cond-mat_dis-nn |
Langevin description of speckle dynamics in nonlinear disordered media: We formulate a Langevin description of dynamics of a speckle pattern
resulting from the multiple scattering of a coherent wave in a nonlinear
disordered medium. The speckle pattern exhibits instability with respect to
periodic excitations at freque... | cond-mat_dis-nn |
Specific-Heat Exponent of Random-Field Systems via Ground-State
Calculations: Exact ground states of three-dimensional random field Ising magnets (RFIM)
with Gaussian distribution of the disorder are calculated using
graph-theoretical algorithms. Systems for different strengths h of the random
fields and sizes up to ... | cond-mat_dis-nn |
Machine learning the dynamics of quantum kicked rotor: Using the multilayer convolutional neural network (CNN), we can detect the
quantum phases in random electron systems, and phase diagrams of two and higher
dimensional Anderson transitions and quantum percolations as well as disordered
topological systems have been ... | cond-mat_dis-nn |
Flat-band-based multifractality in the all-band-flat diamond chain: We study the effect of quasiperiodic Aubry-Andr\'e disorder on the energy
spectrum and eigenstates of a one-dimensional all-bands-flat (ABF) diamond
chain. The ABF diamond chain possesses three dispersionless flat bands with all
the eigenstates compact... | cond-mat_dis-nn |
Sznajd Complex Networks: The Sznajd cellular automata corresponds to one of the simplest and yet most
interesting models of complex systems. While the traditional two-dimensional
Sznajd model tends to a consensus state (pro or cons), the assignment of the
contrary to the dominant opinion to some of its cells during the... | cond-mat_dis-nn |
Renormalization group analysis of the random first order transition: We consider the approach describing glass formation in liquids as a
progressive trapping in an exponentially large number of metastable states. To
go beyond the mean-field setting, we provide a real-space renormalization group
(RG) analysis of the ass... | cond-mat_dis-nn |
Particle size effects in the antiferromagnetic spinel CoRh$_2$O$_4$: We report the particle size dependent magnetic behaviour in the
antiferromagnetic spinel CoRh2O4. The nanoparticles were obtained by mechanical
milling of bulk material, prepared under sintering method. The XRD spectra show
that the samples are retain... | cond-mat_dis-nn |
Landau-Zener transition driven by a slow noise: The effect of a slow noise in non-diagonal matrix element, J(t), that
describes the diabatic level coupling, on the probability of the Landau-Zener
transition is studied. For slow noise, the correlation time, \tau_c, of J(t) is
much longer than the characteristic time of ... | cond-mat_dis-nn |
A New Method to Calculate the Spin-Glass Order Parameter of the
Two-Dimensional +/-J Ising Model: A new method to numerically calculate the $n$th moment of the spin overlap of
the two-dimensional $\pm J$ Ising model is developed using the identity derived
by one of the authors (HK) several years ago. By using the met... | cond-mat_dis-nn |
Replica Cluster Variational Method: the Replica Symmetric solution for
the 2D random bond Ising model: We present and solve the Replica Symmetric equations in the context of the
Replica Cluster Variational Method for the 2D random bond Ising model
(including the 2D Edwards-Anderson spin glass model). First we solve a... | cond-mat_dis-nn |
The interpretation of broad diffuse maxima using superspace
crystallography: Single crystal diffuse scattering is generally interpreted using correlation
parameters that describe probabilities for certain configurations on a local
scale. In this paper we present a novel interpretation of diffuse maxima using
a disord... | cond-mat_dis-nn |
Exact Dynamical Equations for Kinetically-Constrained-Models: The mean-field theory of Kinetically-Constrained-Models is developed by
considering the Fredrickson-Andersen model on the Bethe lattice. Using certain
properties of the dynamics observed in actual numerical experiments we derive
asymptotic dynamical equation... | cond-mat_dis-nn |
Scaling the Temperature-dependent Boson Peak of Vitreous Silica with the
high-frequency Bulk Modulus derived from Brillouin Scattering Data: The position and strength of the boson peak in silica glass vary considerably
with temperature $T$. Such variations cannot be explained solely with changes
in the Debye energy. ... | cond-mat_dis-nn |
From Inherent Structures Deformation to Elastic Heterogeneities: Using a well defined soft model glass in the framework of Molecular Dynamics
simulations, the inherent structures are probed by means of a recently
developed deformation protocol that aims to capture the Dynamical
Heterogeneities (DH), as well as by the u... | cond-mat_dis-nn |
Perturbative instability of non-ergodic phases in non-Abelian quantum
chains: An important challenge in the field of many-body quantum dynamics is to
identify non-ergodic states of matter beyond many-body localization (MBL).
Strongly disordered spin chains with non-Abelian symmetry and chains of
non-Abelian anyons ar... | cond-mat_dis-nn |
Scaling form of zero-field-cooled and field-cooled susceptibility in
superparamagnet: The scaling form of the normalized ZFC and FC susceptibility of
superparamagnets (SPM's) is presented as a function of the normalized
temperature $y$ ($=k_{B}T/K_{u}< V>$), normalized magnetic field $h$
($=H/H_{K}$), and the width $... | cond-mat_dis-nn |
Population spiking and bursting in next generation neural masses with
spike-frequency adaptation: Spike-frequency adaptation (SFA) is a fundamental neuronal mechanism taking
into account the fatigue due to spike emissions and the consequent reduction of
the firing activity. We have studied the effect of this adaptati... | cond-mat_dis-nn |
Algorithms for 3D rigidity analysis and a first order percolation
transition: A fast computer algorithm, the pebble game, has been used successfully to
study rigidity percolation on 2D elastic networks, as well as on a special
class of 3D networks, the bond-bending networks. Application of the pebble game
approach to... | cond-mat_dis-nn |
Spanning avalanches in the three-dimensional Gaussian Random Field Ising
Model with metastable dynamics: field dependence and geometrical properties: Spanning avalanches in the 3D Gaussian Random Field Ising Model (3D-GRFIM)
with metastable dynamics at T=0 have been studied. Statistical analysis of the
field values f... | cond-mat_dis-nn |
1/f Noise in Electron Glasses: We show that 1/f noise is produced in a 3D electron glass by charge
fluctuations due to electrons hopping between isolated sites and a percolating
network at low temperatures. The low frequency noise spectrum goes as
\omega^{-\alpha} with \alpha slightly larger than 1. This result togethe... | cond-mat_dis-nn |
Nonequilibrium localization and the interplay between disorder and
interactions: We study the nonequilibrium interplay between disorder and interactions in a
closed quantum system. We base our analysis on the notion of dynamical
state-space localization, calculated via the Loschmidt echo. Although
real-space and stat... | cond-mat_dis-nn |
Vitrification of a monatomic 2D simple liquid: A monatomic simple liquid in two dimensions, where atoms interact
isotropically through the Lennard-Jones-Gauss potential [M. Engel and H.-R.
Trebin, Phys. Rev. Lett. 98, 225505 (2007)], is vitrified by the use of a rapid
cooling technique in a molecular dynamics simulatio... | cond-mat_dis-nn |
Hamiltonian equation of motion and depinning phase transition in
two-dimensional magnets: Based on the Hamiltonian equation of motion of the $\phi^4$ theory with
quenched disorder, we investigate the depinning phase transition of the
domain-wall motion in two-dimensional magnets. With the short-time dynamic
approach,... | cond-mat_dis-nn |
Phase Singularity Diffusion: We follow the trajectories of phase singularities at nulls of intensity in
the speckle pattern of waves transmitted through random media as the frequency
of the incident radiation is scanned in microwave experiments and numerical
simulations. Phase singularities are observed to diffuse with... | cond-mat_dis-nn |
Thermal conductivity of molecular crystals with self-organizing disorder: The thermal conductivity of some orientational glasses of protonated C2H5OH
and deuterated C2D5OD ethanol, cyclic substances (cyclohexanol C6H11OH,
cyanocyclohexane C6H11CN, cyclohexene C6H10), and freon 112 (CFCl2)2 have been
analyzed in the tem... | cond-mat_dis-nn |
Critical Networks Exhibit Maximal Information Diversity in
Structure-Dynamics Relationships: Network structure strongly constrains the range of dynamic behaviors
available to a complex system. These system dynamics can be classified based on
their response to perturbations over time into two distinct regimes, ordered... | cond-mat_dis-nn |
The plasmon-polariton mirroring due to strong fluctuations of the
surface impedance: Scattering of TM-polarized surface plasmon-polariton waves (PPW) by a finite
segment of the metal-vacuum interface with randomly fluctuating surface
impedance is examined. Solution of the integral equation relating the scattered
fiel... | cond-mat_dis-nn |
Multifractal structure of Barkhausen noise: A signature of collective
dynamics at hysteresis loop: The field-driven magnetisation reversal processes in disordered systems
exhibit a collective behaviour that is manifested in the scale-invariance of
avalanches, closely related to underlying dynamical mechanisms. Using ... | cond-mat_dis-nn |
Replacing neural networks by optimal analytical predictors for the
detection of phase transitions: Identifying phase transitions and classifying phases of matter is central to
understanding the properties and behavior of a broad range of material systems.
In recent years, machine-learning (ML) techniques have been su... | cond-mat_dis-nn |
Universal spectral form factor for many-body localization: We theoretically study correlations present deep in the spectrum of
many-body-localized systems. An exact analytical expression for the spectral
form factor of Poisson spectra can be obtained and is shown to agree well with
numerical results on two models exhib... | cond-mat_dis-nn |
Chaos and residual correlations in pinned disordered systems: We study, using functional renormalization (FRG), two copies of an elastic
system pinned by mutually correlated random potentials. Short scale
decorrelation depend on a non trivial boundary layer regime with (possibly
multiple) chaos exponents. Large scale m... | cond-mat_dis-nn |
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