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A first--order irreversible thermodynamic approach to a simple energy
converter: Several authors have shown that dissipative thermal cycle models based on
Finite-Time Thermodynamics exhibit loop-shaped curves of power output versus
efficiency, such as it occurs with actual dissipative thermal engines. Within
the cont... | cond-mat_stat-mech |
The N-steps Invasion Percolation Model: A new kind of invasion percolation is introduced in order to take into
account the inertia of the invader fluid. The inertia strength is controlled by
the number N of pores (or steps) invaded after the perimeter rupture. The new
model belongs to a different class of universality ... | cond-mat_stat-mech |
ac-driven Brownian motors: a Fokker-Planck treatment: We consider a primary model of ac-driven Brownian motors, i.e., a classical
particle placed in a spatial-time periodic potential and coupled to a heat
bath. The effects of fluctuations and dissipations are studied by a
time-dependent Fokker-Planck equation. The appr... | cond-mat_stat-mech |
A kinetic Ising model study of dynamical correlations in confined
fluids: Emergence of both fast and slow time scales: Experiments and computer simulation studies have revealed existence of rich
dynamics in the orientational relaxation of molecules in confined systems such
as water in reverse micelles, cyclodextrin c... | cond-mat_stat-mech |
A Bottom-Up Model of Self-Organized Criticality on Networks: The Bak-Tang-Wiesenfeld (BTW) sandpile process is an archetypal, stylized
model of complex systems with a critical point as an attractor of their
dynamics. This phenomenon, called self-organized criticality (SOC), appears to
occur ubiquitously in both nature ... | cond-mat_stat-mech |
Specific heats of quantum double-well systems: Specific heats of quantum systems with symmetric and asymmetric double-well
potentials have been calculated. In numerical calculations of their specific
heats, we have adopted the combined method which takes into account not only
eigenvalues of $\epsilon_n$ for $0 \leq n \... | cond-mat_stat-mech |
Roughening Transition of Interfaces in Disordered Systems: The behavior of interfaces in the presence of both lattice pinning and random
field (RF) or random bond (RB) disorder is studied using scaling arguments and
functional renormalization techniques. For the first time we show that there is
a continuous disorder dr... | cond-mat_stat-mech |
Landau thermodynamic potential for BaTiO_3: In the paper, the description of the dielectric and ferroelectric properties
of BaTiO_3 single crystals using Landau thermodynamic potential is addressed.
Our results suggest that when using the sixth-power free energy expansion of
the thermodynamic potential, remarkably diff... | cond-mat_stat-mech |
Exact solution of the geometrically frustrated spin-1/2 Ising-Heisenberg
model on the triangulated Kagome (triangles-in-triangles) lattice: The geometric frustration of the spin-1/2 Ising-Heisenberg model on the
triangulated Kagome (triangles-in-triangles) lattice is investigated within the
framework of an exact anal... | cond-mat_stat-mech |
Building Entanglement Entropy out of Correlation Functions for
Interacting Fermions: We provide a prescription to construct R\'{e}nyi and von Neumann entropy of a
system of interacting fermions from a knowledge of its correlation functions.
We show that R\'{e}nyi entanglement entropy of interacting fermions in
arbitr... | cond-mat_stat-mech |
Physical swap dynamics, shortcuts to relaxation and entropy production
in dissipative Rydberg gases: Dense Rydberg gases are out-of-equilibrium systems where strong
density-density interactions give rise to effective kinetic constraints. They
cause dynamic arrest associated with highly-constrained many-body
configura... | cond-mat_stat-mech |
Continuity Conditions for the Radial Distribution Function of
Square-Well Fluids: The continuity conditions of the radial distribution function g(r) and its
close relative the cavity function y(r) are studied in the context of the
Percus-Yevick (PY) integral equation for 3D square-well fluids. The cases
corresponding... | cond-mat_stat-mech |
Route from discreteness to the continuum for the non-logarithmic
$q$-entropy: The existence and exact form of the continuum expression of the discrete
nonlogarithmic $q$-entropy is an important open problem in generalized
thermostatistics, since its possible lack implies that nonlogarithmic
$q$-entropy is irrelevant ... | cond-mat_stat-mech |
Extinction rates of established spatial populations: This paper deals with extinction of an isolated population caused by
intrinsic noise. We model the population dynamics in a "refuge" as a Markov
process which involves births and deaths on discrete lattice sites and random
migrations between neighboring sites. In ext... | cond-mat_stat-mech |
Entropy and forecasting complexity of hidden Markov models, matrix
product states, and observable operator models: In a series of three papers, Jurgens and Crutchfield recently proposed a
supposedly novel method to compute entropies of hidden Markov models (HMMs),
discussed in detail its relationship to iterated func... | cond-mat_stat-mech |
Superoperator coupled cluster method for nonequilibrium density matrix: We develop a superoperator coupled cluster method for nonequilibrium open
many-body quantum systems described by the Lindblad master equation. The method
is universal and applicable to systems of interacting fermions, bosons or their
mixtures. We p... | cond-mat_stat-mech |
Analysis of a generalised Boltzmann equation for anomalous diffusion
under time-dependent fields: The generalised Boltzmann equation which treats the combined localised and
delocalised nature of transport present in certain materials is extended to
accommodate time-dependent fields. In particular, AC fields are shown... | cond-mat_stat-mech |
Slow Kinetics of Brownian Maxima: We study extreme-value statistics of Brownian trajectories in one dimension.
We define the maximum as the largest position to date and compare maxima of two
particles undergoing independent Brownian motion. We focus on the probability
P(t) that the two maxima remain ordered up to time ... | cond-mat_stat-mech |
Low self-affine exponents of fracture surfaces of glass ceramics: The geometry of post mortem rough fracture surfaces of porous glass ceramics
made of sintered glass beads is shown experimentally to be self-affine with an
exponent zeta=0.40 (0.04) remarkably lower than the 'universal' value zeta=0.8
frequently measured... | cond-mat_stat-mech |
Non-equilibrium dynamics in the quantum Brownian oscillator and the
second law of thermodynamics: We initially prepare a quantum linear oscillator weakly coupled to a bath in
equilibrium at an arbitrary temperature. We disturb this system by varying a
Hamiltonian parameter of the coupled oscillator, namely, either it... | cond-mat_stat-mech |
Phase transitions in Ising models on directed networks: We examine Ising models with heat-bath dynamics on directed networks. Our
simulations show that Ising models on directed triangular and simple cubic
lattices undergo a phase transition that most likely belongs to the Ising
universality class. On the directed squar... | cond-mat_stat-mech |
Classical stochastic approach to quantum mechanics and quantum
thermodynamics: We derive the equations of quantum mechanics and quantum thermodynamics from
the assumption that a quantum system can be described by an underlying
classical system of particles. Each component $\phi_j$ of the wave vector is
understood as ... | cond-mat_stat-mech |
Pseudo-$ε$ Expansion and Renormalized Coupling Constants at
Criticality: Universal values of dimensional effective coupling constants $g_{2k}$ that
determine nonlinear susceptibilities $\chi_{2k}$ and enter the scaling equation
of state are calculated for $n$-vector field theory within the
pseudo-$\epsilon$ expansion... | cond-mat_stat-mech |
Cluster formation and anomalous fundamental diagram in an ant trail
model: A recently proposed stochastic cellular automaton model ({\it J. Phys. A 35,
L573 (2002)}), motivated by the motions of ants in a trail, is investigated in
detail in this paper. The flux of ants in this model is sensitive to the
probability of... | cond-mat_stat-mech |
Circuits in random graphs: from local trees to global loops: We compute the number of circuits and of loops with multiple crossings in
random regular graphs. We discuss the importance of this issue for the validity
of the cavity approach. On the one side we obtain analytic results for the
infinite volume limit in agree... | cond-mat_stat-mech |
First quantum corrections for a hydrodynamics of a nonideal Bose gas: In the paper we consider a hydrodynamical description of a nonideal Bose gas
in one-loop approximation. We calculate an effective action which consists of
mean field contributions and first quantum correction. This provides the
equations of motion fo... | cond-mat_stat-mech |
An appetizer to modern developments on the Kardar-Parisi-Zhang
universality class: The Kardar-Parisi-Zhang (KPZ) universality class describes a broad range of
non-equilibrium fluctuations, including those of growing interfaces, directed
polymers and particle transport, to name but a few. Since the year 2000, our
unde... | cond-mat_stat-mech |
Landau Theory for the Mpemba Effect Through Phase Transitions: The Mpemba effect describes the situation in which a hot system cools faster
than an identical copy that is initiated at a colder temperature. In many of
the experimental observations of the effect, e.g. in water and clathrate
hydrates, it is defined by the... | cond-mat_stat-mech |
Isomorphic classical molecular dynamics model for an excess electron in
a supercritical fluid: Ring polymer molecular dynamics (RPMD) is used to directly simulate the
dynamics of an excess electron in a supercritical fluid over a broad range of
densities. The accuracy of the RPMD model is tested against numerically e... | cond-mat_stat-mech |
Arrested States formed on Quenching Spin Chains with Competing
Interactions and Conserved Dynamics: We study the effects of rapidly cooling to T = 0 a spin chain with conserved
dynamics and competing interactions. Depending on the degree of competition,
the system is found to get arrested in different kinds of metast... | cond-mat_stat-mech |
Reply to the comment on: "Thermostatistics of Overdamped Motion of
Interacting Particles" [arXiv:1104.0697] by Y. Levin and R. Pakter: We show that the comment [arXiv:1104.0697] by Levin and Pakter on our work
[arXiv:1008.1421] is conceptually unfounded, contains misleading
interpretations, and is based on results of... | cond-mat_stat-mech |
Determination of Nonequilibrium Temperature and Pressure using Clausius
Equality in a State with Memory: A Simple Model Calculation: Use of the extended definition of heat dQ=deQ+diQ converts the Clausius
inequality dS greater than or equal to deQ/T0 into an equality dS=dQ/T
involving the nonequilibrium temperature T... | cond-mat_stat-mech |
Some measure theory on stacks of graphs: We apply a theorem of Wick to rewrite certain classes of exponential measures
on random graphs as integrals of Feynman-Gibbs type, on the real line. The
analytic properties of these measures can then be studied in terms of phase
transitions; spaces of scale-free trees are a part... | cond-mat_stat-mech |
Entanglement dynamics in critical random quantum Ising chain with
perturbations: We simulate the entanglement dynamics in a critical random quantum Ising
chain with generic perturbations using the time-evolving block decimation
algorithm. Starting from a product state, we observe super-logarithmic growth
of entanglem... | cond-mat_stat-mech |
Physical insights from imaginary-time density--density correlation
functions: The accurate theoretical description of the dynamic properties of correlated
quantum many-body systems such as the dynamic structure factor
$S(\mathbf{q},\omega)$ constitutes an important task in many fields.
Unfortunately, highly accurate ... | cond-mat_stat-mech |
Statistical Mechanics of Double sinh-Gordon Kinks: We study the classical thermodynamics of the double sinh-Gordon (DSHG) theory
in 1+1 dimensions. This model theory has a double well potential, thus allowing
for the existence of kinks and antikinks. Though it is nonintegrable, the DSHG
model is remarkably amenable to ... | cond-mat_stat-mech |
Friction effects and clogging in a cellular automaton model for
pedestrian dynamics: We investigate the role of conflicts in pedestrian traffic, i.e. situations
where two or more people try to enter the same space. Therefore a recently
introduced cellular automaton model for pedestrian dynamics is extended by a
frict... | cond-mat_stat-mech |
The Dilemma of Bose Solids: is He Supersolid?: Nearly a decade ago the old controversy about possible superfluid flow in the
ground state of solid He4 was revived by the apparent experimental observation
of such superflow. Although the experimentalists have recently retracted, very
publicly, some of the observations on... | cond-mat_stat-mech |
Collective dynamics in systems of active Brownian particles with
dissipative interactions: We use computer simulations to study the onset of collective motion in
systems of interacting active particles. Our model is a swarm of active
Brownian particles with internal energy depot and interactions inspired by the
dissi... | cond-mat_stat-mech |
Stochastic Hard-Sphere Dynamics for Hydrodynamics of Non-Ideal Fluids: A novel stochastic fluid model is proposed with non-ideal structure factor
consistent with compressibility, and adjustable transport coefficients. This
Stochastic Hard Sphere Dynamics (SHSD) algorithm is a modification of the
Direct Simulation Monte... | cond-mat_stat-mech |
Evolution of the System with Singular Multiplicative Noise: The governed equations for the order parameter, one-time and two-time
correlators are obtained on the basis of the Langevin equation with the white
multiplicative noise which amplitude $x^{a}$ is determined by an exponent
$0<a<1$ ($x$ being a stochastic variab... | cond-mat_stat-mech |
Density-feedback control in traffic and transport far from equilibrium: A bottleneck situation in one-lane traffic-flow is typically modelled with a
constant demand of entering cars. However, in practice this demand may depend
on the density of cars in the bottleneck. The present paper studies a simple
bimodal realizat... | cond-mat_stat-mech |
A Langevin canonical approach to the dynamics of chiral two level
systems. Thermal averages and heat capacity: A Langevin canonical framework for a chiral two--level system coupled to a
bath of harmonic oscillators is developed within a coupling scheme different to
the well known spin-boson model. Thermal equilibrium... | cond-mat_stat-mech |
Generalized Tsallis Thermostatistics of Magnetic Systems: In this study, our effort is to introduce Tsallis thermostatistics in some
details and to give a brief review of the magnetic systems which have been
studied in the frame of this formalism. | cond-mat_stat-mech |
The ground state energy of the Edwards-Anderson spin glass model with a
parallel tempering Monte Carlo algorithm: We study the efficiency of parallel tempering Monte Carlo technique for
calculating true ground states of the Edwards-Anderson spin glass model.
Bimodal and Gaussian bond distributions were considered in ... | cond-mat_stat-mech |
Random walks on uniform and non-uniform combs and brushes: We consider random walks on comb- and brush-like graphs consisting of a base
(of fractal dimension $D$) decorated with attached side-groups. The graphs are
also characterized by the fractal dimension $D_a$ of a set of anchor points
where side-groups are attache... | cond-mat_stat-mech |
Decay of Metastable States: Sharp Transition from Quantum to Classical
Behavior: The decay rate of metastable states is determined at high temperatures by
thermal activation, whereas at temperatures close to zero quantum tunneling is
relevant. At some temperature $T_{c}$ the transition from classical to
quantum-domin... | cond-mat_stat-mech |
Nonlinear response and emerging nonequilibrium micro-structures for
biased diffusion in confined crowding environments: We study analytically the dynamics and the micro-structural changes of a host
medium caused by a driven tracer particle moving in a confined, quiescent
molecular crowding environment. Imitating typi... | cond-mat_stat-mech |
Describing the ground state of quantum systems through statistical
mechanics: We present a statistical mechanics description to study the ground state of
quantum systems. In this approach, averages for the complete system are
calculated over the non-interacting energy levels. Taking different interaction
parameter, t... | cond-mat_stat-mech |
The Boltzmann temperature and Lagrange multiplier: We consider the relation between the Boltzmann temperature and the Lagrange
multipliers associated with energy average in the nonextensive
thermostatistics. In Tsallis' canonical ensemble, the Boltzmann temperature
depends on energy through the probability distribution... | cond-mat_stat-mech |
Glassy behaviour in an exactly solved spin system with a ferromagnetic
transition: We show that applying simple dynamical rules to Baxter's eight-vertex model
leads to a system which resembles a glass-forming liquid. There are analogies
with liquid, supercooled liquid, glassy and crystalline states. The disordered
ph... | cond-mat_stat-mech |
Equilibrium Microcanonical Annealing for First-Order Phase Transitions: A framework is presented for carrying out simulations of equilibrium systems
in the microcanonical ensemble using annealing in an energy ceiling. The
framework encompasses an equilibrium version of simulated annealing, population
annealing and hybr... | cond-mat_stat-mech |
High Precision Fourier Monte Carlo Simulation of Crystalline Membranes: We report an essential improvement of the plain Fourier Monte Carlo algorithm
that promises to be a powerful tool for investigating critical behavior in a
large class of lattice models, in particular those containing microscopic or
effective long-r... | cond-mat_stat-mech |
Boundary drive induced formation of aggregate condensates in stochastic
transport with short-range interactions: We discuss the effects of particle exchange through open boundaries and the
induced drive on the phase structure and condensation phenomena of a stochastic
transport process with tunable short-range intera... | cond-mat_stat-mech |
Granular gas of viscoelastic particles in a homogeneous cooling state: Kinetic properties of a granular gas of viscoelastic particles in a
homogeneous cooling state are studied analytically and numerically. We employ
the most recent expression for the velocity-dependent restitution coefficient
for colliding viscoelasti... | cond-mat_stat-mech |
Power-law distributions for the areas of the basins of attraction on a
potential energy landscape: Energy landscape approaches have become increasingly popular for analysing a
wide variety of chemical physics phenomena. Basic to many of these applications
has been the inherent structure mapping, which divides up the ... | cond-mat_stat-mech |
Force fluctuation in a driven elastic chain: We study the dynamics of an elastic chain driven on a disordered substrate
and analyze numerically the statistics of force fluctuations at the depinning
transition. The probability distribution function of the amplitude of the slip
events for small velocities is a power law ... | cond-mat_stat-mech |
Binary data corruption due to a Brownian agent II: two dimensions,
competing agents, and generalized couplings: This work is a continuation of our previous investigation of binary data
corruption due to a Brownian agent [T. J. Newman and W. Triampo, preprint
cond-mat/9811237]. We extend our study in three main direct... | cond-mat_stat-mech |
Dynamics of collapsing and exploding Bose-Einstein condensates: We explored the dynamics of how a Bose-Einstein condensate collapses and
subsequently explodes when the balance of forces governing the size and shape
of the condensate is suddenly altered. A condensate's equilibrium size and
shape is strongly affected by ... | cond-mat_stat-mech |
Consistent description of kinetics and hydrodynamics of dusty plasma: A consistent statistical description of kinetics and hydrodynamics of dusty
plasma is proposed based on the Zubarev nonequilibrium statistical operator
method. For the case of partial dynamics the nonequilibrium statistical
operator and the generaliz... | cond-mat_stat-mech |
Metastability in the Hamiltonian Mean Field model and Kuramoto model: We briefly discuss the state of the art on the anomalous dynamics of the
Hamiltonian Mean Field model. We stress the important role of the initial
conditions for understanding the microscopic nature of the intriguing
metastable quasi stationary state... | cond-mat_stat-mech |
Effect of Constraint Relaxation on the Minimum Vertex Cover Problem in
Random Graphs: A statistical-mechanical study of the effect of constraint relaxation on the
minimum vertex cover problem in Erd\H{o}s-R\'enyi random graphs is presented.
Using a penalty-method formulation for constraint relaxation, typical
propert... | cond-mat_stat-mech |
Fermionic R-operator approach for the small-polaron model with open
boundary condition: Exact integrability and algebraic Bethe ansatz of the small-polaron model
with the open boundary condition are discussed in the framework of the quantum
inverse scattering method (QISM). We employ a new approach where the fermioni... | cond-mat_stat-mech |
Exact relaxation in a class of non-equilibrium quantum lattice systems: A reasonable physical intuition in the study of interacting quantum systems
says that, independent of the initial state, the system will tend to
equilibrate. In this work we study a setting where relaxation to a steady state
is exact, namely for th... | cond-mat_stat-mech |
Self-Consistent Theory of Rupture by Progressive Diffuse Damage: We analyze a self-consistent theory of crack growth controlled by a
cumulative damage variable d(t) dependent on stress history. As a function of
the damage exponent $m$, which controls the rate of damage dd/dt \propto
sigma^m as a function of local stres... | cond-mat_stat-mech |
Accurate Estimation of Diffusion Coefficients and their Uncertainties
from Computer Simulation: Self-diffusion coefficients, $D^*$, are routinely estimated from molecular
dynamics simulations by fitting a linear model to the observed mean-squared
displacements (MSDs) of mobile species. MSDs derived from simulation su... | cond-mat_stat-mech |
Derivation of the percolation threshold for the network model of
Barabasi and Albert: The percolation threshold of the network model by Barabasi and Albert
(BA-model) [Science 286, 509 (1999)] has thus far only been 'guessed' based on
simulations and comparison with other models. Due to the still uncertain
influence ... | cond-mat_stat-mech |
Towards entanglement negativity of two disjoint intervals for a one
dimensional free fermion: We study the moments of the partial transpose of the reduced density matrix
of two intervals for the free massless Dirac fermion. By means of a direct
calculation based on coherent state path integral, we find an analytic fo... | cond-mat_stat-mech |
Percolation approach to glassy dynamics with continuously broken
ergodicity: We show that the relaxation dynamics near a glass transition with continuous
ergodicity breaking can be endowed with a geometric interpretation based on
percolation theory. At mean-field level this approach is consistent with the
mode-coupli... | cond-mat_stat-mech |
Brownian motion under annihilation dynamics: The behavior of a heavy tagged intruder immersed in a bath of particles
evolving under ballistic annihilation dynamics is investigated. The
Fokker-Planck equation for this system is derived and the peculiarities of the
corresponding diffusive behavior are worked out. In the ... | cond-mat_stat-mech |
An exact solution to asymptotic Bethe equation: We present an exact solution to the asymptotic Bethe equation of weakly
anisotropic Heisenberg spin chain, which is a set of non-linear algebraic
equations. The solution describes the low-energy excitations above
ferromagnetic ground state with fixed magnetisation, and it... | cond-mat_stat-mech |
Correlation function structure in square-gradient models of the
liquid-gas interface: Exact results and reliable approximations: In a recent article, we described how the microscopic structure of
density-density correlations in the fluid interfacial region, for systems with
short-ranged forces, can be understood by c... | cond-mat_stat-mech |
Entanglement Spectra and Entanglement Thermodynamics of Hofstadter
Bilayers: We study Hofstadter bilayers, i.e. coupled hopping models on two-dimensional
square lattices in a perpendicular magnetic field. Upon tracing out one of the
layers, we find an explicit expression for the resulting entanglement spectrum
in ter... | cond-mat_stat-mech |
Numerical exploration of the Aging effects in spin systems: An interesting concept that has been underexplored in the context of
time-dependent simulations is the correlation of total magnetization, $C(t)$%.
One of its main advantages over directly studying magnetization is that we do
not need to meticulously prepare i... | cond-mat_stat-mech |
Universal Order and Gap Statistics of Critical Branching Brownian Motion: We study the order statistics of one dimensional branching Brownian motion in
which particles either diffuse (with diffusion constant $D$), die (with rate
$d$) or split into two particles (with rate $b$). At the critical point $b=d$
which we focu... | cond-mat_stat-mech |
Effective Floquet-Gibbs states for dissipative quantum systems: A periodically driven quantum system, when coupled to a heat bath, relaxes to
a non-equilibrium asymptotic state. In the general situation, the retrieval of
this asymptotic state presents a rather non-trivial task. It was recently shown
that in the limit o... | cond-mat_stat-mech |
Prediction, Retrodiction, and The Amount of Information Stored in the
Present: We introduce an ambidextrous view of stochastic dynamical systems, comparing
their forward-time and reverse-time representations and then integrating them
into a single time-symmetric representation. The perspective is useful
theoretically... | cond-mat_stat-mech |
Optimal Work Extraction and the Minimum Description Length Principle: We discuss work extraction from classical information engines (e.g.,
Szil\'ard) with $N$-particles, $q$ partitions, and initial arbitrary
non-equilibrium states. In particular, we focus on their {\em optimal}
behaviour, which includes the measurement... | cond-mat_stat-mech |
Non-KPZ modes in two-species driven diffusive systems: Using mode coupling theory and dynamical Monte-Carlo simulations we
investigate the scaling behaviour of the dynamical structure function of a
two-species asymmetric simple exclusion process, consisting of two coupled
single-lane asymmetric simple exclusion process... | cond-mat_stat-mech |
A fluctuation relation for weakly ergodic aging systems: A fluctuation relation for aging systems is introduced, and verified by
extensive numerical simulations. It is based on the hypothesis of partial
equilibration over phase space regions in a scenario of entropy-driven
relaxation. The relation provides a simple alt... | cond-mat_stat-mech |
Stationary behaviour of observables after a quantum quench in the
spin-1/2 Heisenberg XXZ chain: We consider a quantum quench in the spin-1/2 Heisenberg XXZ chain. At late
times after the quench it is believed that the expectation values of local
operators approach time-independent values, that are described by a gen... | cond-mat_stat-mech |
Magnetic Properties of the Metamagnet Ising Model in a three-dimensional
Lattice in a Random and Uniform Field: By employing the Monte Carlo technique we study the behavior of Metamagnet
Ising Model in a random field. The phase diagram is obtained by using the
algorithm of Glaubr in a cubic lattice of linear size $L$... | cond-mat_stat-mech |
Prethermalization in periodically-driven nonreciprocal many-body spin
systems: We analyze a new class of time-periodic nonreciprocal dynamics in interacting
chaotic classical spin systems, whose equations of motion are conservative
(phase-space-volume-preserving) yet possess no symplectic structure. As a
result, the ... | cond-mat_stat-mech |
Giant leaps and long excursions: fluctuation mechanisms in systems with
long-range memory: We analyse large deviations of time-averaged quantities in stochastic
processes with long-range memory, where the dynamics at time t depends itself
on the value q_t of the time-averaged quantity. First we consider the elephant
... | cond-mat_stat-mech |
Minimal Model of Stochastic Athermal Systems: Origin of Non-Gaussian
Noise: For a wide class of stochastic athermal systems, we derive Langevin-like
equations driven by non-Gaussian noise, starting from master equations and
developing a new asymptotic expansion. We found an explicit condition whereby
the non-Gaussian... | cond-mat_stat-mech |
Magnetization Transfer by a Quantum Ring Device: We show that a tight-binding model device consisting of a laterally connected
ring at half filling in a tangent time-dependent magnetic field can in
principle be designed to pump a purely spin current. The process exploits the
spin-orbit interaction in the ring. This beh... | cond-mat_stat-mech |
Noise influence on solid-liquid transition of ultrathin lubricant film: The melting of ultrathin lubricant film by friction between atomically flat
surfaces is studied. The additive noises of the elastic shear stress and
strain, and the temperature are introduced for building a phase diagram with
the domains of sliding... | cond-mat_stat-mech |
Strong-coupling critical behavior in three-dimensional lattice Abelian
gauge models with charged $N$-component scalar fields and $SO(N)$ symmetry: We consider a three-dimensional lattice Abelian Higgs gauge model for a
charged $N$-component scalar field ${\phi}$, which is invariant under $SO(N)$
global transformation... | cond-mat_stat-mech |
Thermodynamic Geometry, Phase Transitions, and the Widom Line: We construct a novel approach, based on thermodynamic geometry, to
characterize first-order phase transitions from a microscopic perspective,
through the scalar curvature in the equilibrium thermodynamic state space. Our
method resolves key theoretical issu... | cond-mat_stat-mech |
Local pressure of confined fluids inside nanoslit pores -- A density
functional theory prediction: In this work, the local pressure of fluids confined inside nanoslit pores is
predicted within the framework of the density functional theory. The
Euler-Lagrange equation in the density functional theory of statistical
m... | cond-mat_stat-mech |
Nonextensive Entropy, Prior PDFs and Spontaneous Symmetry Breaking: We show that using nonextensive entropy can lead to spontaneous symmetry
breaking when a parameter changes its value from that applicable for a
symmetric domain, as in field theory. We give the physical reasons and also
show that even for symmetric Dir... | cond-mat_stat-mech |
Cardy's Formula for some Dependent Percolation Models: We prove Cardy's formula for rectangular crossing probabilities in dependent
site percolation models that arise from a deterministic cellular automaton with
a random initial state. The cellular automaton corresponds to the
zero-temperature case of Domany's stochast... | cond-mat_stat-mech |
The delayed uncoupled continuous-time random walks do not provide a
model for the telegraph equation: It has been alleged in several papers that the so called delayed
continuous-time random walks (DCTRWs) provide a model for the one-dimensional
telegraph equation at microscopic level. This conclusion, being widesprea... | cond-mat_stat-mech |
Understanding the phenomenon of viscous slowing down of glass-forming
liquids from the static pair correlation function: A theory which uses data of the static pair-correlation function is developed
to calculate quantities associated with the viscous slowing down of supercooled
liquids. We calculate value of the ener... | cond-mat_stat-mech |
Finite-temperature quantum discordant criticality: In quantum statistical mechanics, finite-temperature phase transitions are
typically governed by classical field theories. In this context, the role of
quantum correlations is unclear: recent contributions have shown how
entanglement is typically very short-ranged, and... | cond-mat_stat-mech |
Computing phase diagrams for a quasicrystal-forming patchy-particle
system: We introduce an approach to computing the free energy of quasicrystals, which
we use to calculate phase diagrams for systems of two-dimensional patchy
particles with five regularly arranged patches that have previously been shown
to form dode... | cond-mat_stat-mech |
Heaps' law, statistics of shared components and temporal patterns from a
sample-space-reducing process: Zipf's law is a hallmark of several complex systems with a modular structure,
such as books composed by words or genomes composed by genes. In these
component systems, Zipf's law describes the empirical power law d... | cond-mat_stat-mech |
Differences between regular and random order of updates in damage
spreading simulations: We investigate the spreading of damage in the three-dimensional Ising model
by means of large-scale Monte-Carlo simulations. Within the Glauber dynamics we
use different rules for the order in which the sites are updated. We find... | cond-mat_stat-mech |
Power-law behaviors from the two-variable Langevin equation: Ito's and
Stratonovich's Fokker-Planck equations: We study power-law behaviors produced from the stochastically dynamical
system governed by the well-known two-variable Langevin equations. The
stationary solutions of the corresponding Ito's, Stratonovich's ... | cond-mat_stat-mech |
Critical Properties of the Models of Small Magnetic Particles of the
Antiferromagnet MnF2: The static critical behavior of the models of small magnetic particles of the
real two sublattice antiferromagnet MnF2 is investigated by the Monte Carlo
method taking into account the interaction of the second nearest neighbor... | cond-mat_stat-mech |
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