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Neural networks and logical reasoning systems. A translation table: A correspondence is established between the elements of logic reasoning
systems (knowledge bases, rules, inference and queries) and the hardware and
dynamical operations of neural networks. The correspondence is framed as a
general translation dictiona... | cond-mat_dis-nn |
Disorder-Induced Vibrational Localization: The vibrational equivalent of the Anderson tight-binding Hamiltonian has been
studied, with particular focus on the properties of the eigenstates at the
transition from extended to localized states. The critical energy has been
found approximately for several degrees of force-... | cond-mat_dis-nn |
Energy statistics in disordered systems: The local REM conjecture and
beyond: Recently, Bauke and Mertens conjectured that the local statistics of energies
in random spin systems with discrete spin space should in most circumstances be
the same as in the random energy model. Here we give necessary conditions for
this... | cond-mat_dis-nn |
Two Interacting Electrons in a Quasiperiodic Chain: We study numerically the effect of on-site Hubbard interaction U between two
electrons in the quasiperiodic Harper's equation. In the periodic chain limit
by mapping the problem to that of one electron in two dimensions with a
diagonal line of impurities of strength U... | cond-mat_dis-nn |
Significance of the Hyperfine Interactions in the Phase Diagram of ${\rm
LiHo_xY_{1-x}F_4}$: We consider the quantum magnet $\rm LiHo_xY_{1-x}F_4$ at $x = 0.167$.
Experimentally the spin glass to paramagnet transition in this system was
studied as a function of the transverse magnetic field and temperature, showing
p... | cond-mat_dis-nn |
Resilience to damage of graphs with degree correlations: The existence or not of a percolation threshold on power law correlated
graphs is a fundamental question for which a general criterion is lacking. In
this work we investigate the problems of site and bond percolation on graphs
with degree correlations and their c... | cond-mat_dis-nn |
Effect of second-rank random anisotropy on critical phenomena of random
field O(N) spin model in the large N limit: We study the critical behavior of a random field O($N$) spin model with a
second-rank random anisotropy term in spatial dimensions $4<d<6$, by means of
the replica method and the 1/N expansion. We obtai... | cond-mat_dis-nn |
Are Bosonic Replicas Faulty?: Motivated by the ongoing discussion about a seeming asymmetry in the
performance of fermionic and bosonic replicas, we present an exact,
nonperturbative approach to zero-dimensional replica field theories belonging
to the broadly interpreted "beta=2" Dyson symmetry class. We then utilise t... | cond-mat_dis-nn |
Linearized spectral decimation in fractals: In this article we study the energy level spectrum of fractals which have
block-hierarchical structures. We develop a method to study the spectral
properties in terms of linearization of spectral decimation procedure and
verify it numerically. Our approach provides qualitativ... | cond-mat_dis-nn |
Disorder driven phase transitions in weak AIII topological insulators: The tenfold classification of topological phases enumerates all strong
topological phases for both clean and disordered systems. These strong
topological phases are connected to the existence of robust edge states.
However, in addition to the strong... | 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 |
Molecular dynamics computer simulation of amorphous silica under high
pressure: The structural and dynamic properties of silica melts under high pressure are
studied using molecular dynamics (MD) computer simulation. The interactions
between the ions are modeled by a pairwise-additive potential, the so-called
CHIK po... | cond-mat_dis-nn |
Renormalization Group Approach to Spin Glass Systems: A renormalization group transformation suitable for spin glass models and,
more generally, for disordered models, is presented. The procedure is
non-standard in both the nature of the additional interactions and the coarse
graining transformation, that is performed ... | cond-mat_dis-nn |
Mobility edge and intermediate phase in one-dimensional incommensurate
lattice potentials: We study theoretically the localization properties of two distinct
one-dimensional quasiperiodic lattice models with a single-particle mobility
edge (SPME) separating extended and localized states in the energy spectrum.
The fi... | cond-mat_dis-nn |
Odor recognition and segmentation by a model olfactory bulb and cortex: We present a model of an olfactory system that performs odor segmentation.
Based on the anatomy and physiology of natural olfactory systems, it consists
of a pair of coupled modules, bulb and cortex. The bulb encodes the odor inputs
as oscillating ... | 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 |
Comment on "Collective dynamics in liquid lithium, sodium, and aluminum": In a recent paper, S. Singh and K. Tankeshwar (ST), [Phys. Rev. E
\textbf{67}, 012201 (2003)], proposed a new interpretation of the collective
dynamics in liquid metals, and, in particular, of the relaxation mechanisms
ruling the density fluctuat... | cond-mat_dis-nn |
Breakdown of Dynamical Scale Invariance in the Coarsening of Fractal
Clusters: We extend a previous analysis [PRL {\bf 80}, 4693 (1998)] of breakdown of
dynamical scale invariance in the coarsening of two-dimensional DLAs
(diffusion-limited aggregates) as described by the Cahn-Hilliard equation.
Existence of a second... | cond-mat_dis-nn |
Exact new mobility edges between critical and localized states: The disorder systems host three types of fundamental quantum states, known as
the extended, localized, and critical states, of which the critical states
remain being much less explored. Here we propose a class of exactly solvable
models which host a novel ... | cond-mat_dis-nn |
Critical exponents in Ising spin glasses: We determine accurate values of ordering temperatures and critical exponents
for Ising Spin Glass transitions in dimension 4, using a combination of finite
size scaling and non-equilibrium scaling techniques. We find that the exponents
$\eta$ and $z$ vary with the form of the i... | cond-mat_dis-nn |
On the fragility of the mean-field scenario of structural glasses for
finite-dimensional disordered spin models: At the mean-field level, on fully connected lattices, several disordered spin
models have been shown to belong to the universality class of "structural
glasses", with a "random first-order transition" (RFO... | cond-mat_dis-nn |
Circumventing spin glass traps by microcanonical spontaneous symmetry
breaking: The planted p-spin interaction model is a paradigm of random-graph systems
possessing both a ferromagnetic phase and a disordered phase with the latter
splitting into many spin glass states at low temperatures. Conventional
simulated anne... | cond-mat_dis-nn |
Dynamics of fractal dimension during phase ordering of a geometrical
multifractal: A simple multifractal coarsening model is suggested that can explain the
observed dynamical behavior of the fractal dimension in a wide range of
coarsening fractal systems. It is assumed that the minority phase (an ensemble
of droplets... | cond-mat_dis-nn |
Atomic structure of the continuous random network of amorphous
C[(C6H4)2]2, PAF-1: We demonstrate that the amorphous material PAF-1, C[(C6H4)2]2, forms a
continuous random network in which tetrahedral carbon sites are connected by
4,4'-biphenyl linkers. Experimental neutron total scattering measurements on
deuterated... | cond-mat_dis-nn |
Finite size effects in the microscopic critical properties of jammed
configurations: A comprehensive study of the effects of different types of
disorder: Jamming criticality defines a universality class that includes systems as
diverse as glasses, colloids, foams, amorphous solids, constraint satisfaction
problems,... | cond-mat_dis-nn |
Rayleigh anomalies and disorder-induced mixing of polarizations at
nanoscale in amorphous solids. Testing 1-octyl-3-methylimidazolium chloride
glass: Acoustic excitations in topologically disordered media at mesoscale present
anomalous features with respect to the Debye's theory. In a three-dimensional
medium an ac... | cond-mat_dis-nn |
Mott, Floquet, and the response of periodically driven Anderson
insulators: We consider periodically driven Anderson insulators. The short time behavior
for weak, monochromatic, uniform electric fields is given by linear response
theory and was famously derived by Mott. We go beyond this to consider both
long times--... | cond-mat_dis-nn |
Phase Transition in a Random Minima Model: Mean Field Theory and Exact
Solution on the Bethe Lattice: We consider the number and distribution of minima in random landscapes
defined on non-Euclidean lattices. Using an ensemble where random landscapes
are reweighted by a fugacity factor $z$ for each minimum they contai... | cond-mat_dis-nn |
Logarithmically Slow Relaxation in Quasi-Periodically Driven Random Spin
Chains: We simulate the dynamics of a disordered interacting spin chain subject to a
quasi-periodic time-dependent drive, corresponding to a stroboscopic Fibonacci
sequence of two distinct Hamiltonians. Exploiting the recursive drive
structure, ... | cond-mat_dis-nn |
Comment on "Explicit Analytical Solution for Random Close Packing in d=2
and d=3", Physical Review Letters {\bf 128}, 028002 (2022): The method, proposed in \cite{Za22} to derive the densest packing fraction of
random disc and sphere packings, is shown to yield in two dimensions too high a
value that (i) violates the... | cond-mat_dis-nn |
Fluctuations in photon local delay time and their relation to phase
spectra in random media: The temporal evolution of microwave pulses transmitted through random
dielectric samples is obtained from the Fourier transform of field spectra.
Large fluctuations are found in the local or single channel delay time, which
i... | cond-mat_dis-nn |
Order Parameter Criticality of the d=3 Random-Field Ising
Antiferromagnet Fe(0.85)Zn(0.15)F2: The critical exponent beta =0.16 +- 0.02 for the random-field Ising model
order parameter is determined using extinction-free magnetic x-ray scattering
for Fe(0.85)Zn(0.15)F2 in magnetic fields of 10 and 11 T. The observed v... | cond-mat_dis-nn |
Non-perturbative results for level correlations from the replica
nonlinear sigma model: We show that for all the three standard symmetry classes (unitary, orthogonal
and symplectic), the conventional replica nonlinear sigma model gives the
correct non-perturbative result for the two-level correlation functions
R_2(\o... | cond-mat_dis-nn |
Phase transitions in the $q$-coloring of random hypergraphs: We study in this paper the structure of solutions in the random hypergraph
coloring problem and the phase transitions they undergo when the density of
constraints is varied. Hypergraph coloring is a constraint satisfaction problem
where each constraint includ... | cond-mat_dis-nn |
Dynamic mean-field and cavity methods for diluted Ising systems: We compare dynamic mean-field and dynamic cavity as methods to describe the
stationary states of dilute kinetic Ising models. We compute dynamic mean-field
theory by expanding in interaction strength to third order, and compare to the
exact dynamic mean-f... | cond-mat_dis-nn |
Breakdown of self-averaging in the Bose glass: We study the square-lattice Bose-Hubbard model with bounded random on-site
energies at zero temperature. Starting from a dual representation obtained from
a strong-coupling expansion around the atomic limit, we employ a real-space
block decimation scheme. This approach is ... | cond-mat_dis-nn |
Dynamics of quantum information in many-body localized systems: We characterize the information dynamics of strongly disordered systems using
a combination of analytics, exact diagonalization, and matrix product operator
simulations. More specifically, we study the spreading of quantum information
in three different sc... | cond-mat_dis-nn |
Comment on "Collective dynamics in liquid lithium, sodium, and aluminum": In a recent paper, S. Singh and K. Tankeshwar (ST), [Phys. Rev. E
\textbf{67}, 012201 (2003)], proposed a new interpretation of the collective
dynamics in liquid metals, and, in particular, of the relaxation mechanisms
ruling the density fluctuat... | cond-mat_dis-nn |
Many-body localization as a large family of localized ground states: Many-body localization (MBL) addresses the absence of thermalization in
interacting quantum systems, with non-ergodic high-energy eigenstates behaving
as ground states, only area-law entangled. However, computing highly excited
many-body eigenstates u... | cond-mat_dis-nn |
Exact results and new insights for models defined over small-world
networks. First and second order phase transitions. I: General result: We present, as a very general method, an effective field theory to analyze
models defined over small-world networks. Even if the exactness of the method
is limited to the paramagne... | cond-mat_dis-nn |
Lack of Evidence for a Singlet Crystal Field Ground State in the
Tb2Ti2O7 Magnetic Pyrochlore: We present new high resolution inelastic neutron scattering data on the
candidate spin liquid Tb2Ti2O7. We find that there is no evidence for a zero
field splitting of the ground state doublet within the 0.2 K resolution of... | cond-mat_dis-nn |
Jamming and replica symmetry breaking of weakly disordered crystals: We discuss the physics of crystals with small polydispersity near the jamming
transition point. For this purpose, we introduce an effective single-particle
model taking into account the nearest neighbor structure of crystals. The model
can be solved a... | cond-mat_dis-nn |
Universal scaling of distances in complex networks: Universal scaling of distances between vertices of Erdos-Renyi random graphs,
scale-free Barabasi-Albert models, science collaboration networks, biological
networks, Internet Autonomous Systems and public transport networks are
observed. A mean distance between two no... | cond-mat_dis-nn |
Application of a multi-site mean-field theory to the disordered
Bose-Hubbard model: We present a multi-site formulation of mean-field theory applied to the
disordered Bose-Hubbard model. In this approach the lattice is partitioned into
clusters, each isolated cluster being treated exactly, with inter-cluster
hopping ... | cond-mat_dis-nn |
Millisecond Electron-Phonon Relaxation in Ultrathin Disordered Metal
Films at Millikelvin Temperatures: We have measured directly the thermal conductance between electrons and
phonons in ultra-thin Hf and Ti films at millikelvin temperatures. The
experimental data indicate that electron-phonon coupling in these films... | cond-mat_dis-nn |
Relation of the thermodynamic parameter of disordering with the width of
structure factor and defect concentration in a metallic glass: In this work, we show that above the glass transition there exists a strong
unique interrelationship between the thermodynamic parameter of disorder of a
metallic glass derived using... | cond-mat_dis-nn |
A method of effective potentials for calculating the frequency spectrum
of eccentrically layered spherical cavity resonators: A novel method for the calculation of eigenfrequencies of non-uniformly
filled spherical cavity resonators is developed. The impact of the system
symmetry on the electromagnetic field distribu... | cond-mat_dis-nn |
Long-range influence of manipulating disordered-insulators locally: Localization of wavefunctions is arguably the most familiar effect of
disorder in quantum systems. It has been recently argued [[V. Khemani, R.
Nandkishore, and S. L. Sondhi, Nature Physics, 11, 560 (2015)] that, contrary
to naive expectation, manipula... | cond-mat_dis-nn |
On the shape of invading population in oriented environments: We analyze the properties of population spreading in environments with
spatial anisotropy within the frames of a lattice model of asymmetric (biased)
random walkers. The expressions for the universal shape characteristics of the
instantaneous configuration o... | cond-mat_dis-nn |
Carrier induced ferromagnetism in diluted local-moment systems: The electronic and magnetic properties of concentrated and diluted
ferromagnetic semiconductors are investigated by using the Kondo lattice model,
which describes an interband exchange coupling between itinerant conduction
electrons and localized magnetic ... | cond-mat_dis-nn |
Instability of speckle patterns in random media with noninstantaneous
Kerr nonlinearity: Onset of the instability of a multiple-scattering speckle pattern in a random
medium with Kerr nonlinearity is significantly affected by the noninstantaneous
character of the nonlinear medium response. The fundamental time scale ... | cond-mat_dis-nn |
Comment on "Evidence for nontrivial ground-state structure of 3d +/- J
spin glasses": In a recent Letter [Europhys. Lett. 40, 429 (1997)], Hartmann presented
results for the structure of the degenerate ground states of the
three-dimensional +/- J spin glass model obtained using a genetic algorithm. In
this Comment, I... | cond-mat_dis-nn |
Phase Transition in Multiprocessor Scheduling: The problem of distributing the workload on a parallel computer to minimize
the overall runtime is known as Multiprocessor Scheduling Problem. It is
NP-hard, but like many other NP-hard problems, the average hardness of random
instances displays an ``easy-hard'' phase tran... | cond-mat_dis-nn |
Simple models of small world networks with directed links: We investigate the effect of directed short and long range connections in a
simple model of small world network. Our model is such that we can determine
many quantities of interest by an exact analytical method. We calculate the
function $V(T)$, defined as the ... | cond-mat_dis-nn |
Potts Glass on Random Graphs: We solve the q-state Potts model with anti-ferromagnetic interactions on
large random lattices of finite coordination. Due to the frustration induced by
the large loops and to the local tree-like structure of the lattice this model
behaves as a mean field spin glass. We use the cavity meth... | cond-mat_dis-nn |
Depinning in a two-layer model of plastic flow: We study a model of two layers, each consisting of a d-dimensional elastic
object driven over a random substrate, and mutually interacting through a
viscous coupling. For this model, the mean-field theory (i.e. a fully connected
model) predicts a transition from elastic d... | cond-mat_dis-nn |
Double-Well Optical Lattices with Atomic Vibrations and Mesoscopic
Disorder: Double-well optical lattice in an insulating state is considered. The
influence of atomic vibrations and mesoscopic disorder on the properties of the
lattice are studied. Vibrations lead to the renormalization of atomic
interactions. The occ... | cond-mat_dis-nn |
Noncollinear magnetic order in quasicrystals: Based on Monte-Carlo simulations, the stable magnetization configurations of
an antiferromagnet on a quasiperiodic tiling are derived theoretically. The
exchange coupling is assumed to decrease exponentially with the distance
between magnetic moments. It is demonstrated tha... | cond-mat_dis-nn |
The Random-Diluted Triangular Plaquette Model: study of phase
transitions in a Kinetically Constrained Model: We study how the thermodynamic properties of the Triangular Plaquette Model
(TPM) are influenced by the addition of extra interactions. The thermodynamics
of the original TPM is trivial, while its dynamics is... | cond-mat_dis-nn |
Ideal strength of random alloys from first-principles theory: The all-electron exact muffin-tin orbitals method in combination with the
coherent-potential appproximation has been employed to investigate the ideal
tensile strengths of elemental V, Mo solids and V- and Mo-based random solid
solutions. The present ideal t... | cond-mat_dis-nn |
Aging is - almost - like equilibrium: We study and compare equilibrium and aging dynamics on both sides of the
ideal glass transition temperature $T_{MCT}$. In the context of a mean field
model, we observe that all dynamical behaviors are determined by the energy
distance $\epsilon$ to threshold - i.e. marginally stabl... | cond-mat_dis-nn |
Incorrect sample classification in "Electron localization induced by
intrinsic anion disorder in a transition metal oxynitride": In the recent study of the metal-insulator transition (MIT) in the disordered
crystalline solid SrNbO$_{3-x}$N$_x$ by Daichi Oka et al. [Commun. Phys. 4, 269
(2021)], the data evaluation re... | cond-mat_dis-nn |
Random-field-induced disordering mechanism in a disordered ferromagnet:
Between the Imry-Ma and the standard disordering mechanism: Random fields disorder Ising ferromagnets by aligning single spins in the
direction of the random field in three space dimensions, or by flipping large
ferromagnetic domains at dimension... | cond-mat_dis-nn |
High-dimensional order parameters and neural network classifiers applied
to amorphous ices: Amorphous ice phases are key constituents of water's complex structural
landscape. This study investigates the polyamorphic nature of water, focusing
on the complexities within low-density amorphous ice (LDA), high-density
amo... | cond-mat_dis-nn |
Bistable Gradient Networks II: Storage Capacity and Behaviour Near
Saturation: We examine numerically the storage capacity and the behaviour near saturation
of an attractor neural network consisting of bistable elements with an
adjustable coupling strength, the Bistable Gradient Network (BGN). For strong
coupling, we... | cond-mat_dis-nn |
Vortex characterisation of frustration in the 2d Ising spin glass: The frustrated Ising model on a two-dimensional lattice with open boundary
conditions is revisited. A hidden Z2 gauge symmetry relates models with
different frustrations which, however, share the same partition function. By
means of a duality transforma... | cond-mat_dis-nn |
Correlation between vibrational anomalies and emergent anharmonicity of
local potential energy landscape in metallic glasses: The boson peak (BP) is a universal feature in the Raman and inelastic
scattering spectra of both disordered and crystalline materials. The current
paradigm presents the boson peak as the resul... | cond-mat_dis-nn |
Understanding the problem of glass transition on the basis of elastic
waves in a liquid: We propose that the properties of glass transition can be understood on the
basis of elastic waves. Elastic waves originating from atomic jumps in a liquid
propagate local expansion due to the anharmonicity of interatomic potenti... | cond-mat_dis-nn |
Photocount statistics in mesoscopic optics: We report the first observation of the impact of mesoscopic fluctuations on
the photocount statistics of coherent light scattered in a random medium.
Poisson photocount distribution of the incident light widens and gains
additional asymmetry upon transmission through a suspen... | cond-mat_dis-nn |
Strain localisation above the yielding point in cyclically deformed
glasses: We study the yielding behaviour of a model glass under cyclic athermal
quastistatic deformation computationally, and show that yielding is
characterised by the discontinuous appearance of shear bands, whose width is
about ten particle diamet... | cond-mat_dis-nn |
Glass and jamming transition of simple liquids: static and dynamic
theory: We study the glass and jamming transition of finite-dimensional models of
simple liquids: hard- spheres, harmonic spheres and more generally bounded pair
potentials that modelize frictionless spheres in interaction. At finite
temperature, we s... | cond-mat_dis-nn |
Relation between heterogeneous frozen regions in supercooled liquids and
non-Debye spectrum in the corresponding glasses: Recent numerical studies on glassy systems provide evidences for a population
of non-Goldstone modes (NGMs) in the low-frequency spectrum of the vibrational
density of states $D(\omega)$. Similarl... | cond-mat_dis-nn |
Localization dynamics in a centrally coupled system: In systems where interactions couple a central degree of freedom and a bath,
one would expect signatures of the bath's phase to be reflected in the dynamics
of the central degree of freedom. This has been recently explored in connection
with many-body localized baths... | cond-mat_dis-nn |
Ordering temperatures of Ising Spin Glasses: Exploiting an approach due to Singh and Fisher I show that in the high
dimension limit the ordering temperature of near neighbour Ising Spin Glasses
drops linearly with the kurtosis of the interaction distribution, in excellent
agreement with accurate high temperature series... | cond-mat_dis-nn |
Roughness and critical force for depinning at 3-loop order: A $d$-dimensional elastic manifold at depinning is described by a
renormalized field theory, based on the Functional Renormalization Group (FRG).
Here we analyze this theory to 3-loop order, equivalent to third order in
$\epsilon=4-d$, where $d$ is the interna... | cond-mat_dis-nn |
Spectral statistics across the many-body localization transition: The many-body localization transition (MBLT) between ergodic and many-body
localized phase in disordered interacting systems is a subject of much recent
interest. Statistics of eigenenergies is known to be a powerful probe of
crossovers between ergodic a... | cond-mat_dis-nn |
Normal and anomalous diffusion of Brownian particles on disordered
potentials: In this work we study the transition from normal to anomalous diffusion of
Brownian particles on disordered potentials. The potential model consists of a
series of "potential hills" (defined on unit cell of constant length) whose
heights a... | cond-mat_dis-nn |
Robustness and Independence of the Eigenstates with respect to the
Boundary Conditions across a Delocalization-Localization Phase Transition: We focus on the many-body eigenstates across a localization-delocalization
phase transition. To characterize the robustness of the eigenstates, we
introduce the eigenstate over... | cond-mat_dis-nn |
Percolation through Voids around Overlapping Spheres, a Dynamically
based Finite Size Scaling Analysis: The percolation threshold for flow or conduction through voids surrounding
randomly placed spheres is rigorously calculated. With large scale Monte Carlo
simulations, we give a rigorous continuum treatment to the g... | cond-mat_dis-nn |
Fragility and molar volumes of non-stoichiometric chalcogenides -- the
crucial role of melt/glass homogenization: Melt-fragility index (m) and glass molar volumes (Vm) of binary Ge-Se
melts/glasses are found to change reproducibly as they are homogenized.
Variance of Vm decreases as glasses homogenize, and the mean v... | cond-mat_dis-nn |
Recovering the state sequence of hidden Markov models using mean-field
approximations: Inferring the sequence of states from observations is one of the most
fundamental problems in Hidden Markov Models. In statistical physics language,
this problem is equivalent to computing the marginals of a one-dimensional
model w... | 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 |
Universality in short-range Ising spin glasses: The role of the distribution of coupling constants on the critical exponents
of the short-range Ising spin-glass model is investigated via real space
renormalization group. A saddle-point spin glass critical point characterized
by a fixed-point distribution is found in an... | cond-mat_dis-nn |
Coherent wave transmission in quasi-one-dimensional systems with Lévy
disorder: We study the random fluctuations of the transmission in disordered
quasi-one-dimensional systems such as disordered waveguides and/or quantum
wires whose random configurations of disorder are characterized by density
distributions with a ... | cond-mat_dis-nn |
Comment on the possibility of Inverse Crystallization within van
Hemmen's Classical Spin-Glass model: In this comment, I show that van Hemmen's classical spin-glass model can also
account for processes such as inverse crystallization, where a ferromagnetic
phase appears at higher temperatures than a glass state. The ... | cond-mat_dis-nn |
Broadband dielectric spectroscopy on benzophenone: alpha relaxation,
beta relaxation, and mode coupling theory: We have performed a detailed dielectric investigation of the relaxational
dynamics of glass-forming benzophenone. Our measurements cover a broad
frequency range of 0.1 Hz to 120 GHz and temperatures from fa... | cond-mat_dis-nn |
Moving binary Bose-Einstein condensates in a weak random potential: We study the behavior of moving Bose-Bose mixtures in a weak disordered
potential in the realm of the Bogoliubov-Huang-Meng theory. Corrections due to
the quantum fluctuations, disorder effects and the relative motion of two
fluids to the glassy fracti... | cond-mat_dis-nn |
Learning to find order in disorder: We introduce the use of neural networks as classifiers on classical
disordered systems with no spatial ordering. In this study, we implement a
convolutional neural network trained to identify the spin-glass state in the
three-dimensional Edwards-Anderson Ising spin-glass model from a... | cond-mat_dis-nn |
Triviality of the Ground State Structure in Ising Spin Glasses: We investigate the ground state structure of the three-dimensional Ising spin
glass in zero field by determining how the ground state changes in a fixed
finite block far from the boundaries when the boundary conditions are changed.
We find that the probabi... | cond-mat_dis-nn |
Barkhausen noise in the Random Field Ising Magnet Nd$_2$Fe$_{14}$B: With sintered needles aligned and a magnetic field applied transverse to its
easy axis, the rare-earth ferromagnet Nd$_2$Fe$_{14}$B becomes a
room-temperature realization of the Random Field Ising Model. The transverse
field tunes the pinning potential... | cond-mat_dis-nn |
Renormalization-Group Theory of 1D quasiperiodic lattice models with
commensurate approximants: We develop a renormalization group (RG) description of the localization
properties of onedimensional (1D) quasiperiodic lattice models. The RG flow is
induced by increasing the unit cell of subsequent commensurate approxim... | cond-mat_dis-nn |
Band-center metal-insulator transition in bond-disordered graphene: We study the transport properties of a tight-binding model of non-interacting
fermions with random hopping on the honeycomb lattice. At the particle-hole
symmetric chemical potential, the absence of diagonal disorder (random onsite
potentials) places t... | cond-mat_dis-nn |
Dynamics of a quantum phase transition in the Aubry-André-Harper
model with $p$-wave superconductivity: We investigate the nonequilibrium dynamics of the one-dimension
Aubry-Andr\'{e}-Harper model with $p$-wave superconductivity by changing the
potential strength with slow and sudden quench. Firstly, we study the slo... | cond-mat_dis-nn |
Coulomb Glasses: A Comparison Between Mean Field and Monte Carlo Results: Recently a local mean field theory for both eqilibrium and transport
properties of the Coulomb glass was proposed [A. Amir et al., Phys. Rev. B 77,
165207 (2008); 80, 245214 (2009)]. We compare the predictions of this theory to
the results of dyn... | cond-mat_dis-nn |
Spin Wave Propagation in the Domain State of a Random Field Magnet: Inelastic neutron scattering with high wave-vector resolution has
characterized the propagation of transverse spin wave modes near the
antiferromagnetic zone center in the metastable domain state of a random field
Ising magnet. A well-defined, long wav... | cond-mat_dis-nn |
On the Approach to the Equilibrium and the Equilibrium Properties of a
Glass-Forming Model: In this note we apply some theoretical predictions that arise in the mean
field framework for a large class of infinite range models to structural
glasses and we present a first comparison of these predictions with numerical
r... | cond-mat_dis-nn |
A Simple Model for Simple Aging in Glassy Yttrium-Hydrides: A simple explanation for the logarithmic aging of the photoconductivity in
yttriumhydride is proposed. We show that the scaling (``simple'' aging) of the
relaxation response with the illumination time t_w is consistent with the
superposition of independently r... | cond-mat_dis-nn |
Pinning dependent field driven domain wall dynamics and thermal scaling
in an ultrathin Pt/Co/Pt magnetic film: Magnetic field-driven domain wall motion in an ultrathin Pt/Co(0.45nm)/Pt
ferromagnetic film with perpendicular anisotropy is studied over a wide
temperature range. Three different pinning dependent dynamic... | cond-mat_dis-nn |
Entropy and typical properties of Nash equilibria in two-player games: We use techniques from the statistical mechanics of disordered systems to
analyse the properties of Nash equilibria of bimatrix games with large random
payoff matrices. By means of an annealed bound, we calculate their number and
analyse the propert... | cond-mat_dis-nn |
Learning and inference in a nonequilibrium Ising model with hidden nodes: We study inference and reconstruction of couplings in a partially observed
kinetic Ising model. With hidden spins, calculating the likelihood of a
sequence of observed spin configurations requires performing a trace over the
configurations of the... | cond-mat_dis-nn |
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