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Complex topological features of reservoirs shape learning performances
in bio-inspired recurrent neural networks: Recurrent networks are a special class of artificial neural systems that use
their internal states to perform computing tasks for machine learning. One of
its state-of-the-art developments, i.e. reservoir... | cond-mat_dis-nn |
Universal Transport Dynamics of Complex Fluids: Thermal motion in complex fluids is a complicated stochastic process but
ubiquitously exhibits initial ballistic, intermediate sub-diffusive, and
long-time non-Gaussian diffusive motion, unless interrupted. Despite its
relevance to numerous dynamical processes of interest... | cond-mat_dis-nn |
Unlearning regularization for Boltzmann Machines: Boltzmann Machines (BMs) are graphical models with interconnected binary
units, employed for the unsupervised modeling of data distributions. When
trained on real data, BMs show the tendency to behave like critical systems,
displaying a high susceptibility of the model ... | cond-mat_dis-nn |
Simplified dynamics for glass model: In spin glass models one can remove minimization of free energy by some order
parameter. One can consider hierarchy of order parameters. It is possible to
divide energy among these parts. We can consider relaxation process in glass
system phenomonologically, as exchange of energy be... | cond-mat_dis-nn |
Anchored advected interfaces, Oslo model, and roughness at depinning: There is a plethora of 1-dimensional advected systems with an absorbing
boundary: the Toom model of anchored interfaces, the directed exclusion process
where in addition to diffusion particles and holes can jump over their right
neighbor, simple diff... | cond-mat_dis-nn |
Effect of Nuclear Quadrupole Interaction on the Relaxation in Amorphous
Solids: Recently it has been experimentally demonstrated that certain glasses display
an unexpected magnetic field dependence of the dielectric constant. In
particular, the echo technique experiments have shown that the echo amplitude
depends on ... | cond-mat_dis-nn |
Understanding spin glass transition as a dynamic phenomenon: Existing theories explain spin glass transition in terms of a phase
transition and order parameters, and assume the existence of a distinct spin
glass phase. In addition to problems related to clarifying the nature of this
phase, the common challenge is to ex... | cond-mat_dis-nn |
Effective transport properties of conformal Voronoi-bounded columns via
recurrent boundary element expansions: Effective transport properties of heterogeneous structures are predicted by
geometric microstructural parameters, but these can be difficult to calculate.
Here, a boundary element code with a recurrent serie... | cond-mat_dis-nn |
Electrodynamics of a Coulomb Glass in n-type Silicon: Optical measurements of the real and imaginary frequency dependent
conductivity of uncompensated n-type silicon are reported. The experiments are
done in the quantum limit, $ \hbar\omega > k_{B}T$, across a broad doping range
on the insulating side of the Metal-Insu... | cond-mat_dis-nn |
Electromagnetic Waves Through Disordered Systems: Comparison Of
Intensity, Transmission And Conductance: We obtain the statistics of the intensity, transmission and conductance for
scalar electromagnetic waves propagating through a disordered collection of
scatterers. Our results show that the probability distributio... | cond-mat_dis-nn |
Correlated Persistent Tunneling Currents in Glasses: Low temperature properties of glasses are derived within a generalized
tunneling model, considering the motion of charged particles on a closed path
in a double-well potential. The presence of a magnetic induction field B
violates the time reversal invariance due to ... | cond-mat_dis-nn |
Continuum Percolation on Disoriented Surfaces: the Problem of Permeable
Disks on a Klein Bottle: The percolation threshold and wrapping probability $R_{\infty}$ for the
two-dimensional problem of continuum percolation on the surface of a Klein
bottle have been calculated by the Monte Carlo method with the Newman--Zif... | cond-mat_dis-nn |
Phase boundary near a magnetic percolation transition: Motivated by recent experimental observations [Phys. Rev. 96, 020407 (2017)]
on hexagonal ferrites, we revisit the phase diagrams of diluted magnets close
to the lattice percolation threshold. We perform large-scale Monte Carlo
simulations of XY and Heisenberg mode... | cond-mat_dis-nn |
Design of one-dimensional Lambertian diffusers of light: We describe a method for designing a one-dimensional random surface that acts
as a Lambertian diffuser. The method is tested by means of rigorous computer
simulations and is shown to yield the desired scattering pattern. | cond-mat_dis-nn |
Evidence for growth of collective excitations in glasses at low
temperatures: We present new data on the nonequilibrium acoustic response of glasses to an
applied dc electric field below 1K. When compared with the analogous dielectric
response of the same material, the acoustic data show, within experimental
precisio... | cond-mat_dis-nn |
Quantum fluctuations in the transverse Ising spin glass model: A field
theory of random quantum spin systems: We develop a mean-field theory for random quantum spin systems using the spin
coherent state path integral representation. After the model is reduced to the
mean field one-body Hamiltonian, the integral is an... | cond-mat_dis-nn |
On the origin of the $λ$-transition in liquid Sulphur: Developing a novel experimental technique, we applied photon correlation
spectroscopy using infrared radiation in liquid Sulphur around $T_\lambda$,
i.e. in the temperature range where an abrupt increase in viscosity by four
orders of magnitude is observed upon hea... | cond-mat_dis-nn |
Magnetoresistance in semiconductor structures with hopping conductivity:
effects of random potential and generalization for the case of acceptor
states: We reconsider the theory of magnetoresistance in hopping semiconductors.
First, we have shown that the random potential of the background impurities
affects signif... | cond-mat_dis-nn |
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 |
A numerical study of the overlap probability distribution and its
sample-to-sample fluctuations in a mean-field model: In this paper we study the fluctuations of the probability distributions of
the overlap in mean field spin glasses in the presence of a magnetic field on
the De Almeida-Thouless line. We find that th... | cond-mat_dis-nn |
Spatial correlation functions and dynamical exponents in very large
samples of 4D spin glasses: The study of the low temperature phase of spin glass models by means of Monte
Carlo simulations is a challenging task, because of the very slow dynamics and
the severe finite size effects they show. By exploiting at the be... | cond-mat_dis-nn |
Continuum Percolation on Disoriented Surfaces: the Problem of Permeable
Disks on a Klein Bottle: The percolation threshold and wrapping probability $R_{\infty}$ for the
two-dimensional problem of continuum percolation on the surface of a Klein
bottle have been calculated by the Monte Carlo method with the Newman--Zif... | cond-mat_dis-nn |
Localization crossover and subdiffusive transport in a classical
facilitated network model of a disordered, interacting quantum spin chain: We consider the random-field Heisenberg model, a paradigmatic model for
many-body localization (MBL), and add a Markovian dephasing bath coupled to the
Anderson orbitals of the m... | cond-mat_dis-nn |
Annealed inhomogeneities in random ferromagnets: We consider spin models on complex networks frequently used to model social
and technological systems. We study the annealed ferromagnetic Ising model for
random networks with either independent edges (Erd\H{o}s-R\'enyi), or with
prescribed degree distributions (configur... | cond-mat_dis-nn |
Metal-Insulator-Transition in a Weakly interacting Disordered Electron
System: The interplay of interactions and disorder is studied using the
Anderson-Hubbard model within the typical medium dynamical cluster
approximation. Treating the interacting, non-local cluster self-energy
($\Sigma_c[{\cal \tilde{G}}](i,j\neq ... | cond-mat_dis-nn |
Enhancement of the Magnetocaloric Effect in Geometrically Frustrated
Cluster Spin Glass Systems: In this work, we theoretically demonstrate that a strong enhancement of the
Magnetocaloric Effect is achieved in geometrically frustrated cluster
spin-glass systems just above the freezing temperature. We consider a netwo... | cond-mat_dis-nn |
Calculation of ground states of four-dimensional +or- J Ising spin
glasses: Ground states of four-dimensional (d=4) EA Ising spin glasses are calculated
for sizes up to 7x7x7x7 using a combination of a genetic algorithm and
cluster-exact approximation. The ground-state energy of the infinite system is
extrapolated as... | cond-mat_dis-nn |
Adaptive Density-Matrix Renormalization-Group study of the disordered
antiferromagnetic spin-1/2 Heisenberg chain: Using the recently introduced adaptive density-matrix renormalization-group
method, we study the many spin-spin correlations of the spin-$1/2$
antiferromagnetic Heisenberg chain with random coupling cons... | cond-mat_dis-nn |
Effect of selection on ancestry: an exactly soluble case and its
phenomenological generalization: We consider a family of models describing the evolution under selection of a
population whose dynamics can be related to the propagation of noisy traveling
waves. For one particular model, that we shall call the exponent... | cond-mat_dis-nn |
Efficient Representation of Quantum Many-body States with Deep Neural
Networks: The challenge of quantum many-body problems comes from the difficulty to
represent large-scale quantum states, which in general requires an
exponentially large number of parameters. Recently, a connection has been made
between quantum man... | cond-mat_dis-nn |
Topological phases and Anderson localization in off-diagonal mosaic
lattices: We introduce a one-dimensional lattice model whose hopping amplitudes are
modulated for equally spaced sites. Such mosaic lattice exhibits many
interesting topological and localization phenomena that do not exist in the
regular off-diagonal... | cond-mat_dis-nn |
Enhancement of chaotic subdiffusion in disordered ladders with synthetic
gauge fields: We study spreading wave packets in a disordered nonlinear ladder with broken
time-reversal symmetry induced by synthetic gauge fields. The model describes
the dynamics of interacting bosons in a disordered and driven optical ladder... | cond-mat_dis-nn |
Avalanches and many-body resonances in many-body localized systems: We numerically study both the avalanche instability and many-body resonances
in strongly-disordered spin chains exhibiting many-body localization (MBL). We
distinguish between a finite-size/time MBL regime, and the asymptotic MBL
phase, and identify so... | cond-mat_dis-nn |
A pragmatical access to the viscous flow: The paper derives a relation for the viscosity of undercooled liquids on the
basis of the pragmatical model concept of Eshelby relaxations with a finite
lifetime. From accurate shear relaxation data in the literature, one finds that
slightly less than half of the internal stres... | cond-mat_dis-nn |
Monte Carlo studies of the one-dimensional Ising spin glass with
power-law interactions: We present results from Monte Carlo simulations of the one-dimensional Ising
spin glass with power-law interactions at low temperature, using the parallel
tempering Monte Carlo method. For a set of parameters where the long-range... | cond-mat_dis-nn |
Fixed points and their stability in the functional renormalization group
of random field models: We consider the zero-temperature fixed points controlling the critical
behavior of the $d$-dimensional random-field Ising, and more generally $O(N)$,
models. We clarify the nature of these fixed points and their stability... | cond-mat_dis-nn |
Equilibrium valleys in spin glasses at low temperature: We investigate the 3-dimensional Edwards-Anderson spin glass model at low
temperature on simple cubic lattices of sizes up to L=12. Our findings show a
strong continuity among T>0 physical features and those found previously at
T=0, leading to a scenario with emer... | cond-mat_dis-nn |
Density of States near the Anderson Transition in a Four-dimensional
Space. Renormalizable Models: Asymptotically exact results are obtained for the average Green function and
density of states of a disordered system for a renormalizable class of models
(as opposed to the lattice models examined previously [Zh. Eksp.... | cond-mat_dis-nn |
Zero-Temperature Critical Phenomena in Two-Dimensional Spin Glasses: Recent developments in study of two-dimensional spin glass models are
reviewed in light of fractal nature of droplets at zero-temperature. Also
presented are some new results including a new estimate of the stiffness
exponent using a boundary conditio... | cond-mat_dis-nn |
Quasi-long range order in the random anisotropy Heisenberg model: The large distance behaviors of the random field and random anisotropy
Heisenberg models are studied with the functional renormalization group in
$4-\epsilon$ dimensions. The random anisotropy model is found to have a phase
with the infinite correlation ... | cond-mat_dis-nn |
Comment on "Evidence of Non-Mean-Field-Like Low-Temperature Behavior in
the Edwards-Anderson Spin-Glass Model": A recent interesting paper [Yucesoy et al. Phys. Rev. Lett. 109, 177204
(2012), arXiv:1206:0783] compares the low-temperature phase of the 3D
Edwards-Anderson (EA) model to its mean-field counterpart, the
S... | cond-mat_dis-nn |
Solvable model of a polymer in random media with long ranged disorder
correlations: We present an exactly solvable model of a Gaussian (flexible) polymer chain
in a quenched random medium. This is the case when the random medium obeys very
long range quadratic correlations. The model is solved in $d$ spatial
dimensio... | cond-mat_dis-nn |
Metal-insulator transition in hydrogenated graphene as manifestation of
quasiparticle spectrum rearrangement of anomalous type: We demonstrate that the spectrum rearrangement can be considered as a
precursor of the metal-insulator transition observed in graphene dosed with
hydrogen atoms. The Anderson-type transition... | cond-mat_dis-nn |
Virtual Node Graph Neural Network for Full Phonon Prediction: The structure-property relationship plays a central role in materials
science. Understanding the structure-property relationship in solid-state
materials is crucial for structure design with optimized properties. The past
few years witnessed remarkable progr... | cond-mat_dis-nn |
On the Dynamics of Glassy Systems: Glassy systems are disordered systems characterized by extremely slow
dynamics. Examples are supercooled liquids, whose dynamics slow down under
cooling. The specific pattern of slowing-down depends on the material
considered. This dependence is poorly understood, in particular, it re... | cond-mat_dis-nn |
Critical properties of the Anderson localization transition and the high
dimensional limit: In this paper we present a thorough study of transport, spectral and
wave-function properties at the Anderson localization critical point in spatial
dimensions $d = 3$, $4$, $5$, $6$. Our aim is to analyze the dimensional
depe... | cond-mat_dis-nn |
Linear theory of random textures of 3He-A in aerogel: Spacial variation of the orbital part of the order parameter of $^3$He-A in
aerogel is represented as a random walk of the unit vector $\mathbf{l}$ in a
field of random anisotropy produced by the strands of aerogel. For a range of
distances, where variation of $\mat... | cond-mat_dis-nn |
KPZ equation in one dimension and line ensembles: For suitably discretized versions of the Kardar-Parisi-Zhang equation in one
space dimension exact scaling functions are available, amongst them the
stationary two-point function. We explain one central piece from the technology
through which such results are obtained, ... | cond-mat_dis-nn |
Structure and Time-Evolution of an Internet Dating Community: We present statistics for the structure and time-evolution of a network
constructed from user activity in an Internet community. The vastness and
precise time resolution of an Internet community offers unique possibilities to
monitor social network formation... | cond-mat_dis-nn |
Epidemic spread in weighted networks: We study the detailed epidemic spreading process in scale-free networks with
weight that denote familiarity between two people or computers. The result
shows that spreading velocity reaches a peak quickly then decays representing
power-law time behavior, and comparing to non-weight... | cond-mat_dis-nn |
Structural Probe of a Glass Forming Liquid: Generalized Compressibility: We introduce a new quantity to probe the glass transition. This quantity is a
linear generalized compressibility which depends solely on the positions of the
particles. We have performed a molecular dynamics simulation on a glass forming
liquid co... | cond-mat_dis-nn |
Validity of the zero-thermodynamic law in off-equilibrium coupled
harmonic oscillators: In order to describe the thermodynamics of the glassy systems it has been
recently introduced an extra parameter also called effective temperature which
generalizes the fluctuation-dissipation theorem (FDT) to systems
off-equilibr... | cond-mat_dis-nn |
Crystal-like Order Stabilizing Glasses: Structural Origin of
Ultra-stable Metallic Glasses: Glasses are featured with a disordered amorphous structure, being opposite to
crystals that are constituted by periodic lattices. In this study we report
that the exceptional thermodynamic and kinetic stability of an ultra-sta... | cond-mat_dis-nn |
Origin of the Growing Length Scale in M-p-Spin Glass Models: Two versions of the M-p-spin glass model have been studied with the
Migdal-Kadanoff renormalization group approximation. The model with p=3 and M=3
has at mean-field level the ideal glass transition at the Kauzmann temperature
and at lower temperatures still ... | cond-mat_dis-nn |
Universality and Deviations in Disordered Systems: We compute the probability of positive large deviations of the free energy
per spin in mean-field Spin-Glass models. The probability vanishes in the
thermodynamic limit as $P(\Delta f) \propto \exp[-N^2 L_2(\Delta f)]$. For the
Sherrington-Kirkpatrick model we find $L_... | cond-mat_dis-nn |
On the Paramagnetic Impurity Concentration of Silicate Glasses from
Low-Temperature Physics: The concentration of paramagnetic trace impurities in glasses can be
determined via precise SQUID measurements of the sample's magnetization in a
magnetic field. However the existence of quasi-ordered structural
inhomogeneiti... | cond-mat_dis-nn |
Large-scale dynamical simulations of the three-dimensional XY spin glass: Large-scale simulations have been performed in the current-driven
three-dimensional XY spin glass with resistively-shunted junction dynamics for
sample sizes up to $64^3$. It is observed that the linear resistivity at low
temperatures tends to ze... | cond-mat_dis-nn |
$1/f^α$ noise and generalized diffusion in random Heisenberg spin
systems: We study the `flux noise' spectrum of random-bond quantum Heisenberg spin
systems using a real-space renormalization group (RSRG) procedure that accounts
for both the renormalization of the system Hamiltonian and of a generic probe
that measur... | cond-mat_dis-nn |
Percolation of optical excitation mediated by near-field interactions: Optical excitation transfer in nanostructured matter has been intensively
studied in various material systems for versatile applications. Herein, we
discuss the percolation of optical excitations in randomly organized
nanostructures caused by optica... | cond-mat_dis-nn |
From particles to spins: Eulerian formulation of supercooled liquids and
glasses: The dynamics of supercooled liquid and glassy systems are usually studied
within the Lagrangian representation, in which the positions and velocities of
distinguishable interacting particles are followed. Within this representation,
how... | cond-mat_dis-nn |
Electronic properties of the 1D Frenkel-Kontorova model: The energy spectra and quantum diffusion of an electron in a 1D
incommensurate Frenkel-Kontorova (FK) model are studied numerically. We found
that the spectral and dynamical properties of electron display quite different
behaviors in invariance circle regime and ... | cond-mat_dis-nn |
Dense Hebbian neural networks: a replica symmetric picture of
unsupervised learning: We consider dense, associative neural-networks trained with no supervision
and we investigate their computational capabilities analytically, via a
statistical-mechanics approach, and numerically, via Monte Carlo simulations.
In parti... | cond-mat_dis-nn |
Modal makeup of transmission eigenchannels: Transmission eigenchannels and quasi-normal modes are powerful bases for
describing wave transport and controlling transmission and energy storage in
disordered media. Here we elucidate the connection between these approaches by
expressing the transmission matrix (TM) at a pa... | cond-mat_dis-nn |
A Wavelet Analysis of Transient Spike Trains of Hodgkin-Huxley Neurons: Transient spike trains consisting of $M$ (= 1 - 5) pulses generated by single
Hodgkin-Huxley (HH) neurons, have been analyzed by using both the continuous
and discrete wavelet transformations (WT). We have studied effects of
variations in the inter... | cond-mat_dis-nn |
Study of longitudinal fluctuations of the Sherrington-Kirkpatrick model: We study finite-size corrections to the free energy of the
Sherrington-Kirkpatrick spin glass in the low temperature phase. We investigate
the role of longitudinal fluctuations in these corrections, neglecting the
transverse contribution. In parti... | cond-mat_dis-nn |
Thermodynamics of the Lévy spin glass: We investigate the L\'evy glass, a mean-field spin glass model with power-law
distributed couplings characterized by a divergent second moment. By combining
extensively many small couplings with a spare random backbone of strong bonds
the model is intermediate between the Sherring... | cond-mat_dis-nn |
Bosons in Disordered Optical Potentials: In this work we systematically investigate the condensate properties,
superfluid properties and quantum phase transitions in interacting Bose gases
trapped in disordered optical potentials. We numerically solve the Bose-Hubbard
Hamiltonian exactly for different: (a) types of dis... | cond-mat_dis-nn |
Diffusion of a particle in the Gaussian random energy landscape:
Einstein relation and analytical properties of average velocity and
diffusivity as functions of driving force: We demonstrate that the Einstein relation for the diffusion of a particle in
the random energy landscape with the Gaussian density of states... | cond-mat_dis-nn |
Interaction-Driven Instabilities in the Random-Field XXZ Chain: Despite enormous efforts devoted to the study of the many-body localization
(MBL) phenomenon, the nature of the high-energy behavior of the Heisenberg spin
chain in a strong random magnetic field is lacking consensus. Here, we take a
step back by exploring... | cond-mat_dis-nn |
Statistical properties of localisation--delocalisation transition in one
dimension: We study a one-dimensional model of disordered electrons (also relevant for
random spin chains), which exhibits a delocalisation transition at
half-filling. Exact probability distribution functions for the Wigner time and
transmission... | cond-mat_dis-nn |
Finite-size scaling with respect to interaction and disorder strength at
the many-body localization transition: We present a finite-size scaling for both interaction and disorder strengths
in the critical regime of the many-body localization (MBL) transition for a
spin-1/2 XXZ spin chain with a random field by studyi... | cond-mat_dis-nn |
Rare regions and avoided quantum criticality in disordered Weyl
semimetals and superconductors: Disorder in Weyl semimetals and superconductors is surprisingly subtle,
attracting attention and competing theories in recent years. In this brief
review, we discuss the current theoretical understanding of the effects of
... | cond-mat_dis-nn |
One step RSB scheme for the rate distortion function: We apply statistical mechanics to an inverse problem of linear mapping to
investigate the physics of the irreversible compression. We use the replica
symmetry breaking (RSB) technique with a toy model to demonstrate the Shannon's
result. The rate distortion function... | cond-mat_dis-nn |
On reducing Terrorism Power: A Hint from Physics: The September 11 attack on the US has revealed an unprecedented terrorism
worldwide range of destruction. Recently, it has been related to the
percolation of worldwide spread passive supporters. This scheme puts the
suppression of the percolation effect as the major str... | cond-mat_dis-nn |
Finite-size relaxational dynamics of a spike random matrix spherical
model: We present a thorough numerical analysis of the relaxational dynamics of the
Sherrington-Kirkpatrick spherical model with an additive non-disordered
perturbation for large but finite sizes $N$. In the thermodynamic limit and at
low temperatur... | cond-mat_dis-nn |
Slow oscillating dynamics of a two-level system subject to a fast
telegraph noise: beyond the NIBA approximation: We study the dynamics of a two-site model in which the tunneling amplitude
between the sites is not constant but rather a high-frequency noise. Obviously,
the population imbalance in this model decays exp... | cond-mat_dis-nn |
Correlation-induced localization: A new paradigm of Anderson localization caused by correlations in the
long-range hopping along with uncorrelated on-site disorder is considered which
requires a more precise formulation of the basic localization-delocalization
principles. A new class of random Hamiltonians with transla... | cond-mat_dis-nn |
Theory of Non-linear Susceptibility and Correlation Length in Glasses
and Liquids: Within the framework of the effective potential theory of the structural
glass transition, we calculate for the p-spin model a static nonlinear
susceptibility related to a four-point density correlation function, and show
that it grows... | cond-mat_dis-nn |
Magetoresistance of RuO_2-based resistance thermometers below 0.3 K: We have determined the magnetoresistance of RuO_2-based resistors (Scientific
Instruments RO-600) between 0.05 K and 0.3 K in magnetic fields up to 8 T. The
magnetoresistance is negative around 0.5 T and then becomes positive at larger
fields. The mag... | cond-mat_dis-nn |
Dipolar Interactions and Origin of Spin Ice in Ising Pyrochlore Magnets: Recent experiments suggest that the Ising pyrochlore magnets ${\rm
Ho_{2}Ti_{2}O_{7}}$ and ${\rm Dy_{2}Ti_{2}O_{7}}$ display qualitative
properties of the spin ice model proposed by Harris {\it et al.} \prl {\bf 79},
2554 (1997). We discuss the di... | cond-mat_dis-nn |
Dynamics at the Many-Body Localization Transition: The isolated one-dimensional Heisenberg model with static random magnetic
fields has become paradigmatic for the analysis of many-body localization.
Here, we study the dynamics of this system initially prepared in a
highly-excited nonstationary state. Our focus is on t... | cond-mat_dis-nn |
How genealogies are affected by the speed of evolution: In a series of recent works it has been shown that a class of simple models
of evolving populations under selection leads to genealogical trees whose
statistics are given by the Bolthausen-Sznitman coalescent rather than by the
well known Kingman coalescent in the... | cond-mat_dis-nn |
Conserved Dynamics and Interface Roughening in Spontaneous Imbibition :
A Phase Field Model: The propagation and roughening of a fluid-gas interface through a disordered
medium in the case of capillary driven spontaneous imbibition is considered.
The system is described by a conserved (model B) phase-field model, wit... | cond-mat_dis-nn |
More than two equally probable variants of signal in Kauffman networks
as an important overlooked case, negative feedbacks allow life in chaos: There are three main aims of this paper. 1- I explain reasons why I await
life to lie significantly deeper in chaos than Kauffman approach does, however
still in boundary are... | cond-mat_dis-nn |
Bias driven coherent carrier dynamics in a two-dimensional aperiodic
potential: We study the dynamics of an electron wave-packet in a two-dimensional square
lattice with an aperiodic site potential in the presence of an external uniform
electric field. The aperiodicity is described by $\epsilon_{\bf m} =
V\cos{(\pi\a... | cond-mat_dis-nn |
Unraveling the nature of carrier mediated ferromagnetism in diluted
magnetic semiconductors: After more than a decade of intensive research in the field of diluted
magnetic semiconductors (DMS), the nature and origin of ferromagnetism,
especially in III-V compounds is still controversial. Many questions and open
issu... | cond-mat_dis-nn |
Absorption spectrum of a one-dimensional chain with Frenkel's exciton
under diagonal disorder represented by hyperbolic defects: A method is proposed for calculating the absorption spectrum of a long
one-dimensional closed-into-a-ring chain with Frenkel's exciton under diagonal
disorder. This disorder is represented ... | cond-mat_dis-nn |
Disorder Induced Anomalous Hall Effect in Type-I Weyl Metals: Connection
between the Kubo-Streda Formula in the Spin and Chiral basis: We study the anomalous Hall effect (AHE) in tilted Weyl metals with weak
Gaussian disorder under the Kubo-Streda formalism in this work. To separate the
three different contributions,... | cond-mat_dis-nn |
Energy-Efficient and Robust Associative Computing with Electrically
Coupled Dual Pillar Spin-Torque Oscillators: Dynamics of coupled spin-torque oscillators can be exploited for non-Boolean
information processing. However, the feasibility of coupling large number of
STOs with energy-efficiency and sufficient robustne... | cond-mat_dis-nn |
The integrated density of states of the random graph Laplacian: We analyse the density of states of the random graph Laplacian in the
percolating regime. A symmetry argument and knowledge of the density of states
in the nonpercolating regime allows us to isolate the density of states of the
percolating cluster (DSPC) a... | cond-mat_dis-nn |
Localized Modes in Open One-Dimensional Dissipative Random Systems: We consider, both theoretically and experimentally, the excitation and
detection of the localized quasi-modes (resonances) in an open dissipative 1D
random system. We show that even though the amplitude of transmission drops
dramatically so that it can... | cond-mat_dis-nn |
Level spacing distribution of localized phases induced by quasiperiodic
potentials: Level statistics is a crucial tool in the exploration of localization
physics. The level spacing distribution of the disordered localized phase
follows Poisson statistics, and many studies naturally apply it to the
quasiperiodic local... | cond-mat_dis-nn |
Geometry, Topology and Simplicial Synchronization: Simplicial synchronization reveals the role that topology and geometry have
in determining the dynamical properties of simplicial complexes. Simplicial
network geometry and topology are naturally encoded in the spectral properties
of the graph Laplacian and of the high... | cond-mat_dis-nn |
Many-Body Localization: Transitions in Spin Models: We study the transitions between ergodic and many-body localized phases in
spin systems, subject to quenched disorder, including the Heisenberg chain and
the central spin model. In both cases systems with common spin lengths $1/2$
and $1$ are investigated via exact nu... | cond-mat_dis-nn |
Full solution for the storage of correlated memories in an
autoassociative memory: We complement our previous work [arxiv: 0707.0565] with the full (non
diluted) solution describing the stable states of an attractor network that
stores correlated patterns of activity. The new solution provides a good fit of
simulatio... | cond-mat_dis-nn |
Generic Modeling of Chemotactic Based Self-Wiring of Neural Networks: The proper functioning of the nervous system depends critically on the
intricate network of synaptic connections that are generated during the system
development. During the network formation, the growth cones migrate through the
embryonic environmen... | cond-mat_dis-nn |
Surface properties at the Kosterlitz-Thouless transition: Monte Carlo simulations of the two-dimensional XY model are performed in a
square geometry with free and mixed fixed-free boundary conditions. Using a
Schwarz-Christoffel conformal mapping, we deduce the exponent eta of the order
parameter correlation function a... | cond-mat_dis-nn |
Application of Polynomial Algorithms to a Random Elastic Medium: A randomly pinned elastic medium in two dimensions is modeled by a disordered
fully-packed loop model. The energetics of disorder-induced dislocations is
studied using exact and polynomial algorithms from combinatorial optimization.
Dislocations are found... | cond-mat_dis-nn |
Broken Replica Symmetry Bounds in the Mean Field Spin Glass Model: By using a simple interpolation argument, in previous work we have proven the
existence of the thermodynamic limit, for mean field disordered models,
including the Sherrington-Kirkpatrick model, and the Derrida p-spin model. Here
we extend this argument... | cond-mat_dis-nn |
Quantized Repetitions of the Cuprate Pseudogap Line: The cuprate superconductors display several characteristic temperatures which
decrease as the material composition is doped, tracing lines across the
temperature-doping phase diagram. Foremost among these is the pseudogap
transition. At a higher temperature a peak is... | cond-mat_dis-nn |
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