publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2018-01-23 | The effect of liquid on the vibrational intensity of a wineglass at steady state resonance | As a liquid is inserted into a wineglass, the natural frequency of the
wineglass decreases. This phenomenon, known as pitch lowering, is well
explained in past papers. However, previous literature have not yet mentioned
that pitch lowering also reduces the resonance intensity of a wineglass. Thus,
this present paper ai... | 1801.07514v5 |
2018-02-12 | Chance-constrained optimal location of damping control actuators under wind power variability | This paper proposes a new probabilistic energy-based method to determine the
optimal installation location of electronically-interfaced resources (EIRs)
considering dynamic reinforcement under wind variability in systems with high
penetration of wind power. The oscillation energy and total action are used to
compare th... | 1802.04354v1 |
2018-02-21 | On the vibron-polaron damping in quasi 1D macromolecular chains | The properties of the intramolecular vibrational excitation (vibron) in a
quasi 1D macromolecular structure are studied. It is supposed that due to the
vibron interaction with optical phonon modes, a vibron might form partially
dressed small polaron states. The properties of these states are investigated
in dependence ... | 1802.07424v1 |
2018-02-27 | Impact of damping on superconducting gap oscillations induced by intense Terahertz pulses | We investigate the interplay between gap oscillations and damping in the
dynamics of superconductors taken out of equilibrium by strong optical pulses
with sub-gap Terahertz frequencies. A semi-phenomenological formalism is
developed to include the damping within the electronic subsystem that arises
from effects beyond... | 1802.09711v2 |
2018-02-28 | Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states | We study experimentally various physical limitations and technical
imperfections that lead to damping and finite contrast of optically-driven Rabi
oscillations between ground and Rydberg states of a single atom. Finite
contrast is due to preparation and detection errors and we show how to model
and measure them accurat... | 1802.10424v1 |
2018-03-07 | Connecting dissipation and noncommutativity: A Bateman system case study | Quantum effects on a pair of Bateman oscillators embedded in an ambient
noncommutative space (Moyal plane) is analyzed using both path integral and
canonical quantization schemes within the framework of Hilbert-Schmidt operator
formulation. We adopt a method which is distinct from the one which employs 't
Hooft's schem... | 1803.03334v1 |
2018-03-18 | A machine learning method to separate cosmic ray electrons from protons from 10 to 100 GeV using DAMPE data | DArk Matter Particle Explorer (DAMPE) is a general purpose high energy cosmic
ray and gamma ray observatory, aiming to detect high energy electrons and
gammas in the energy range 5 GeV to 10 TeV and hundreds of TeV for nuclei. This
paper provides a method using machine learning to identify electrons and
separate them f... | 1803.06628v2 |
2018-03-20 | Estimating Participation Factors and Mode Shapes for Electromechanical Oscillations in Ambient Conditions | In this paper, a new technique is applied to conduct mode identification
using ambient measurement data. The proposed hybrid measurement- and
model-based method can accurately estimate the system state matrix in ambient
conditions, the eigenvalues and eigenvectors of which readily provide all the
modal knowledge includ... | 1803.07264v1 |
2018-03-21 | Globally Stable Output Feedback Synchronization of Teleoperation with Time-Varying Delays | This paper presents a globally stable teleoperation control strategy for
systems with time-varying delays that eliminates the need for velocity
measurements through novel augmented Immersion and Invariance velocity
observers. The new observers simplify a recent constructive Immersion and
Invariance velocity observer to... | 1803.08159v1 |
2018-03-29 | Stochastic conformal multi-symplectic method for damped stochastic nonlinear Schrodinger equation | In this paper, we propose a stochastic conformal multi-symplectic method for
a class of damped stochastic Hamiltonian partial differential equations in
order to inherit the intrinsic properties, and apply the numerical method to
solve a kind of damped stochastic nonlinear Schrodinger equation with
multiplicative noise.... | 1803.10885v1 |
2018-04-01 | Bounded Connectivity-Preserving Coordination of Networked Euler-Lagrange Systems | This paper derives sufficient conditions for bounded distributed
connectivity-preserving coordination of Euler-Lagrange systems with only
position measurements and with system uncertainties, respectively. The paper
proposes two strategies that suitably scale conventional gradient-based
controls to account for the actua... | 1804.00333v1 |
2018-04-09 | Damping and clustering into crowded environment of catalytic chemical oscillators | A system formed by a crowded environment of catalytic obstacles and complex
oscillatory chemical reactions is inquired. The obstacles are static spheres of
equal radius, which are placed in a random way. The chemical reactions are
carried out in a fluid following a multiparticle collision scheme where the
mass, energy ... | 1804.03174v1 |
2018-04-11 | A global existence result for a semilinear wave equation with scale-invariant damping and mass in even space dimension | In the present article a semilinear wave equation with scale-invariant
damping and mass is considered. The global (in time) existence of radial
symmetric solutions in even spatial dimension $n$ is proved using weighted
$L^\infty-L^\infty$ estimates, under the assumption that the multiplicative
constants, which appear i... | 1804.03978v1 |
2018-04-17 | Modelling linewidths of Kepler red giants in NGC 6819 | We present a comparison between theoretical, frequency-dependent, damping
rates and linewidths of radial-mode oscillations in red-giant stars located in
the open cluster NGC 6819. The calculations adopt a time-dependent non-local
convection model, with the turbulent pressure profile being calibrated to
results of 3D hy... | 1804.06255v1 |
2018-04-24 | $\text{Co}_{25}\text{Fe}_{75}$ Thin Films with Ultralow Total Damping | We measure the dynamic properties of $\text{Co}_{25}\text{Fe}_{75}$ thin
films grown by dc magnetron sputtering. Using ferromagnetic resonance
spectroscopy, we demonstrate an ultralow total damping parameter in the
out-of-plane configuration of < 0.0013, whereas for the in-plane configuration
we find a minimum total da... | 1804.08786v1 |
2018-05-15 | Simple Nonlinear Models with Rigorous Extreme Events and Heavy Tails | Extreme events and the heavy tail distributions driven by them are ubiquitous
in various scientific, engineering and financial research. They are typically
associated with stochastic instability caused by hidden unresolved processes.
Previous studies have shown that such instability can be modeled by a
stochastic dampi... | 1805.05615v3 |
2018-06-18 | Theoretical interpretations of DAMPE first results: a critical review | The DAMPE experiment recently published its first results on the lepton ($e^+
+ e^-$) cosmic-ray (CRs) flux. These results are of importance since they
account for the first direct detection of the lepton break around the energy of
1 TeV and confirm the discoveries of ground-based Cherenkov detectors.
Meanwhile they re... | 1806.06534v1 |
2018-06-22 | Optimal Design of Virtual Inertia and Damping Coefficients for Virtual Synchronous Machines | Increased penetration of inverter-connected renewable energy sources (RES) in
the power system has resulted in a decrease in available rotational inertia
which serves as an immediate response to frequency deviation due to
disturbances. The concept of virtual inertia has been proposed to combat this
decrease by enabling... | 1806.08488v1 |
2018-07-17 | Bipartite and Tripartite Entanglement for Three Damped Driven Qubits | We investigate bipartite and tripartite entanglement in an open quantum
system, specifically three qubits, all of which are damped, and one of which is
driven. We adapt a systematic approach in calculating the entanglement of
various bipartite splits usinga generalized concurrence as an indicator of
entanglement. Our c... | 1807.06178v1 |
2018-07-17 | Boundary-to-Displacement Asymptotic Gains for Wave Systems With Kelvin-Voigt Damping | We provide estimates for the asymptotic gains of the displacement of a
vibrating string with endpoint forcing, modeled by the wave equation with
Kelvin-Voigt and viscous damping and a boundary disturbance. Two asymptotic
gains are studied: the gain in the L2 spatial norm and the gain in the spatial
sup norm. It is show... | 1807.06549v1 |
2018-07-24 | Stabilization of an unstable wave equation using an infinite dimensional dynamic controller | This paper deals with the stabilization of an anti-stable string equation
with Dirichlet actuation where the instability appears because of the
uncontrolled boundary condition. Then, infinitely many unstable poles are
generated and an infinite dimensional control law is therefore proposed to
exponentially stabilize the... | 1807.08999v2 |
2018-07-24 | Interplay between intermittency and dissipation in collisionless plasma turbulence | We study the damping of collisionless Alfv\'enic turbulence by two
mechanisms: stochastic heating (whose efficiency depends on the local
turbulence amplitude $\delta z_\lambda$) and linear Landau damping (whose
efficiency is independent of $\delta z_\lambda$), describing in detail how they
affect and are affected by in... | 1807.09301v2 |
2018-07-31 | Input-to-State Stability of a Clamped-Free Damped String in the Presence of Distributed and Boundary Disturbances | This note establishes the Exponential Input-to-State Stability (EISS)
property for a clamped-free damped string with respect to distributed and
boundary disturbances. While efficient methods for establishing ISS properties
for distributed parameter systems with respect to distributed disturbances have
been developed du... | 1807.11696v2 |
2018-07-31 | Spin absorption at ferromagnetic-metal/platinum-oxide interface | We investigate the absorption of a spin current at a
ferromagnetic-metal/Pt-oxide interface by measuring current-induced
ferromagnetic resonance. The spin absorption was characterized by the magnetic
damping of the heterostructure. We show that the magnetic damping of a
Ni$_{81}$Fe$_{19}$ film is clearly enhanced by at... | 1807.11806v1 |
2018-08-16 | Stability analysis of dissipative systems subject to nonlinear damping via Lyapunov techniques | In this article, we provide a general strategy based on Lyapunov functionals
to analyse global asymptotic stability of linear infinite-dimensional systems
subject to nonlinear dampings under the assumption that the origin of the
system is globally asymp-totically stable with a linear damping. To do so, we
first charact... | 1808.05370v1 |
2018-08-30 | The influence of the coefficients of a system of coupled wave equations with fractional damping on its stabilization | In this work, we consider a system of two wave equations coupled by
velocities in one-dimensional space, with one boundary fractional damping.
First, we show that the system is strongly asymptotically stable if and only if
the coupling parameter b of the two equations is outside a discrete set of
exceptional real value... | 1808.10285v4 |
2018-09-05 | On the forced Euler and Navier-Stokes equations: Linear damping and modified scattering | We study the asymptotic behavior of the forced linear Euler and nonlinear
Navier-Stokes equations close to Couette flow in a periodic channel. As our
main result we show that for smooth time-periodic forcing linear inviscid
damping persists, i.e. the velocity field (weakly) asymptotically converges.
However, stability ... | 1809.01729v1 |
2018-09-12 | Theory of bifurcation amplifiers utilizing the nonlinear dynamical response of an optically damped mechanical oscillator | We consider a standard optomechanical system where a mechanical oscillator is
coupled to a cavity mode through the radiation pressure interaction. The
oscillator is coherently driven at its resonance frequency, whereas the cavity
mode is driven below its resonance, providing optical damping of the mechanical
oscillatio... | 1809.04592v2 |
2018-09-13 | Second order asymptotical regularization methods for inverse problems in partial differential equations | We develop Second Order Asymptotical Regularization (SOAR) methods for
solving inverse source problems in elliptic partial differential equations with
both Dirichlet and Neumann boundary data. We show the convergence results of
SOAR with the fixed damping parameter, as well as with a dynamic damping
parameter, which is... | 1809.04971v2 |
2018-09-24 | Oscillation Damping Control of Pendulum-like Manipulation Platform using Moving Masses | This paper presents an approach to damp out the oscillatory motion of the
pendulum-like hanging platform on which a robotic manipulator is mounted. To
this end, moving masses were installed on top of the platform. In this paper,
asymptotic stability of the platform (which implies oscillation damping) is
achieved by des... | 1809.08819v1 |
2018-07-16 | A unified N-SECE strategy for highly coupled piezoelectric energy scavengers | This paper proposes a novel vibration energy harvesting strategy based on an
extension of the Synchronous Electric Charge Extraction (SECE) approach,
enabling both the maximization of the harvested power and a consequent
bandwidth enlargement in the case of highly coupled/lightly damped
piezoelectric energy harvesters.... | 1809.09685v1 |
2018-10-09 | The lifespan of solutions of semilinear wave equations with the scale-invariant damping in one space dimension | The critical constant of time-decaying damping in the scale-invariant case is
recently conjectured. It also has been expected that the lifespan estimate is
the same as for the associated semilinear heat equations if the constant is in
the \heat-like" domain. In this paper, we point out that this is not true if
the tota... | 1810.03780v2 |
2018-10-24 | Justification of the Lugiato-Lefever model from a damped driven $φ^4$ equation | The Lugiato-Lefever equation is a damped and driven version of the well-known
nonlinear Schr\"odinger equation. It is a mathematical model describing complex
phenomena in dissipative and nonlinear optical cavities. Within the last two
decades, the equation has gained a wide attention as it becomes the basic model
descr... | 1810.10630v1 |
2018-11-06 | Decay properties and asymptotic profiles for elastic waves with Kelvin-Voigt damping in 2D | In this paper we consider elastic waves with Kelvin-Voigt damping in 2D. For
the linear problem, applying pointwise estimates of the partial Fourier
transform of solutions in the Fourier space and asymptotic expansions of
eigenvalues and their eigenprojections, we obtain sharp energy decay estimates
with additional $L^... | 1811.02223v3 |
2018-12-06 | Damping and Anti-Damping Phenomena in Metallic Antiferromagnets: An ab-initio Study | We report on a first principles study of anti-ferromagnetic resonance (AFMR)
phenomena in metallic systems [MnX (X=Ir,Pt,Pd,Rh) and FeRh] under an external
electric field. We demonstrate that the AFMR linewidth can be separated into a
relativistic component originating from the angular momentum transfer between
the col... | 1812.02844v2 |
2018-12-12 | Extreme wave events for a nonlinear Schrödinger equation with linear damping and Gaussian driving | We perform a numerical study of the initial-boundary value problem, with
vanishing boundary conditions, of a driven nonlinear Schr\"odinger equation
(NLS) with linear damping and a Gaussian driver. We identify Peregrine-like
rogue waveforms, excited by two different types of vanishing initial data
decaying at an algebr... | 1812.05439v3 |
2018-12-13 | Stability of elastic transmission systems with a local Kelvin-Voigt damping | In this paper, we consider the longitudinal and transversal vibrations of the
transmission Euler-Bernoulli beam with Kelvin-Voigt damping distributed locally
on any subinterval of the region occupied by the beam and only in one side of
the transmission point. We prove that the semigroup associated with the
equation for... | 1812.05923v1 |
2018-12-13 | Energy decay estimates of elastic transmission wave/beam systems with a local Kelvin-Voigt damping | We consider a beam and a wave equations coupled on an elastic beam through
transmission conditions. The damping which is locally distributed acts through
one of the two equations only; its effect is transmitted to the other equation
through the coupling. First we consider the case where the dissipation acts
through the... | 1812.05924v1 |
2018-12-20 | Sound attenuation in stable glasses | Understanding the difference between universal low-temperature properties of
amorphous and crystalline solids requires an explanation of the stronger
damping of long-wavelength phonons in amorphous solids. A longstanding sound
attenuation scenario, resulting from a combination of experiments, theories,
and simulations,... | 1812.08736v2 |
2018-12-21 | Reply to the Comment on "Negative Landau damping in bilayer graphene" | Here we address the concerns of Svintsov and Ryzhii [arXiv:1812.03764] on our
article on negative Landau damping in graphene [Phys. Rev. Lett. 119, 133901
(2017)]. We prove that due to the differences between the kinetic and canonical
momenta, the conductivity of drift-current biased graphene is ruled by a
Galilean tra... | 1812.09103v3 |
2018-12-27 | Nonexistence of global solutions for a weakly coupled system of semilinear damped wave equations of derivative type in the scattering case | In this paper we consider the blow-up for solutions to a weakly coupled
system of semilinear damped wave equations of derivative type in the scattering
case. After introducing suitable functionals proposed by Lai-Takamura for the
corresponding single semilinear equation, we employ Kato's lemma to derive the
blow-up res... | 1812.10653v1 |
2018-12-30 | Smooth, Time-invariant Regulation of Nonholonomic Systems via Energy Pumping-and-Damping | In this paper we propose an energy pumping-and-damping technique to regulate
nonholonomic systems described by kinematic models. The controller design
follows the widely popular interconnection and damping assignment
passivity-based methodology, with the free matrices partially structured. Two
asymptotic regulation obj... | 1812.11538v2 |
2019-01-05 | Simulations of wobble damping in viscoelastic rotators | Using a damped mass-spring model, we simulate wobble of spinning homogeneous
viscoelastic ellipsoids undergoing non-principal axis rotation. Energy damping
rates are measured for oblate and prolate bodies with different spin rates,
spin states, viscoelastic relaxation timescales, axis ratios, and strengths.
Analytical ... | 1901.01439v3 |
2019-01-16 | Laboratory investigations of the bending rheology of floating saline ice, and physical mechanisms of wave damping, in the HSVA ice tank | An experiment on the propagation of flexural-gravity waves was performed in
the HSVA ice tank. Physical characteristics of the water-ice system were
measured in different locations in the tank during the tests, with a number of
sensors deployed in the water, on the ice and in the air. Water velocity was
measured with a... | 1901.05333v1 |
2019-01-24 | Generalized framework for testing gravity with gravitational-wave propagation. III. Future prospect | The properties of gravitational-wave (GW) propagation are modified in
alternative theories of gravity and are crucial observables to test gravity at
cosmological distance. The propagation speed has already been measured from
GW170817 so precisely and pinned down to the speed of light, while other
properties of GW propa... | 1901.08249v2 |
2019-01-31 | Perturbed Markov Chains and Information Networks | The paper is devoted to studies of perturbed Markov chains commonly used for
description of information networks. In such models, the matrix of transition
probabilities for the corresponding Markov chain is usually regularised by
adding a special damping matrix multiplied by a small damping (perturbation)
parameter $\v... | 1901.11483v3 |
2019-02-14 | Dynamic Interconnection and Damping Injection for Input-to-State Stable Bilateral Teleoperation | In bilateral teleoperation, the human who operates the master and the
environment which interacts with the slave are part of the force feedback loop.
Yet, both have time-varying and unpredictable dynamics and are challenging to
model. A conventional strategy for sidestepping the demand for their models in
the stability... | 1902.05500v1 |
2019-02-15 | Evidence for Electron Landau Damping in Space Plasma Turbulence | How turbulent energy is dissipated in weakly collisional space and
astrophysical plasmas is a major open question. Here, we present the
application of a field-particle correlation technique to directly measure the
transfer of energy between the turbulent electromagnetic field and electrons in
the Earth's magnetosheath,... | 1902.05785v1 |
2019-02-22 | Thermal induced monochromatic microwave generation in magnon-polariton | We propose thermal induced generation of monochromatic microwave radiation in
magnon-polariton. Mechanism of thermal to microwave energy transformation is
based on intrinsic energy loss compensation of coupled magnon and microwave
cavity oscillators by thermal induced "negative damping". A singularity at an
exceptional... | 1902.08383v1 |
2019-03-04 | Nonlinear inviscid damping for zero mean perturbation of the 2D Euler Couette flow | In this note we revisit the proof of Bedrossian and Masmoudi
[arXiv:1306.5028] about the inviscid damping of planar shear flows in the 2D
Euler equations under the assumption of zero mean perturbation. We prove that a
small perturbation to the 2D Euler Couette flow in $\mathbb{T}\times
\mathbb{R}$ strongly converge to ... | 1903.01543v1 |
2019-03-10 | Orbital stabilization of nonlinear systems via Mexican sombrero energy shaping and pumping-and-damping injection | In this paper we show that a slight modification to the widely popular
interconnection and damping assignment passivity-based control
method---originally proposed for stabilization of equilibria of nonlinear
systems---allows us to provide a solution to the more challenging orbital
stabilization problem. Two different, ... | 1903.04070v3 |
2019-03-11 | Impact of thermal effects on the evolution of eccentricity and inclination of low-mass planets | Using linear perturbation theory, we evaluate the time-dependent force
exerted on an eccentric and inclined low-mass planet embedded in a gaseous
protoplanetary disc with finite thermal diffusivity $\chi$. We assume the
eccentricity and inclination to be small compared to the size of the thermal
lobes $\lambda\sim(\chi... | 1903.04470v2 |
2019-03-14 | The Strichartz estimates for the damped wave equation and the behavior of solutions for the energy critical nonlinear equation | For the linear damped wave equation (DW), the $L^p$-$L^q$ type estimates have
been well studied. Recently, Watanabe showed the Strichartz estimates for DW
when $d=2,3$. In the present paper, we give Strichartz estimates for DW in
higher dimensions. Moreover, by applying the estimates, we give the local
well-posedness o... | 1903.05887v1 |
2019-04-17 | Decays for Kelvin-Voigt damped wave equations I : the black box perturbative method | We show in this article how perturbative approaches~from our work with Hitrik
(see also the work by Anantharaman-Macia) and the {\em black box} strategy
from~ our work with Zworski allow to obtain decay rates for Kelvin-Voigt damped
wave equations from quite standard resolvent estimates : Carleman estimates or
geometri... | 1904.08318v2 |
2019-04-17 | Non-Hermitian skin effect and chiral damping in open quantum systems | One of the unique features of non-Hermitian Hamiltonians is the non-Hermitian
skin effect, namely that the eigenstates are exponentially localized at the
boundary of the system. For open quantum systems, a short-time evolution can
often be well described by the effective non-Hermitian Hamiltonians, while
long-time dyna... | 1904.08432v2 |
2019-04-19 | Plasmon-Emitter Interactions at the Nanoscale | Plasmon-emitter interactions are of paramount importance in modern
nanoplasmonics and are generally maximal at short emitter-surface separations.
However, when the separation falls below 10-20 nm, the classical theory
progressively deteriorates due to its neglect of quantum mechanical effects
such as nonlocality, elect... | 1904.09279v1 |
2019-04-23 | Ultrafast depinning of domain wall in notched antiferromagnetic nanostructures | The pinning and depinning of antiferromagnetic (AFM) domain wall is certainly
the core issue of AFM spintronics. In this work, we study theoretically the
N\'eel-type domain wall pinning and depinning at a notch in an
antiferromagnetic (AFM) nano-ribbon. The depinning field depending on the notch
dimension and intrinsic... | 1904.10197v2 |
2019-05-08 | Discrete Energy behavior of a damped Timoshenko system | In this article, we consider a one-dimensional Timoshenko system subject to
different types of dissipation (linear and nonlinear dampings). Based on a
combination between the finite element and the finite difference methods, we
design a discretization scheme for the different Timoshenko systems under
consideration. We ... | 1905.03050v1 |
2019-05-08 | Attractors for semilinear wave equations with localized damping and external forces | This paper is concerned with long-time dynamics of semilinear wave equations
defined on bounded domains of $\mathbb{R}^3$ with cubic nonlinear terms and
locally distributed damping. The existence of regular finite-dimensional global
attractors established by Chueshov, Lasiecka and Toundykov (2008) reflects a
good deal ... | 1905.03285v1 |
2019-05-16 | Global attractors and their upper semicontinuity for a structural damped wave equation with supercritical nonlinearity on $\mathbb{R}^{N}$ | The paper investigates the existence of global attractors and their upper
semicontinuity for a structural damped wave equation on $\mathbb{R}^{N}:
u_{tt}-\Delta u+(-\Delta)^\alpha u_{t}+u_{t}+u+g(u)=f(x)$, where $\alpha\in
(1/2, 1)$ is called a dissipative index. We propose a new method based on the
harmonic analysis t... | 1905.06778v1 |
2019-05-20 | Quantum parameter-estimation of frequency and damping of a harmonic-oscillator | We determine the quantum Cram\'er-Rao bound for the precision with which the
oscillator frequency and damping constant of a damped quantum harmonic
oscillator in an arbitrary Gaussian state can be estimated. This goes beyond
standard quantum parameter estimation of a single mode Gaussian state for which
typically a mod... | 1905.08288v1 |
2019-05-24 | Damped oscillations of the probability of random events followed by absolute refractory period: exact analytical results | There are numerous examples of natural and artificial processes that
represent stochastic sequences of events followed by an absolute refractory
period during which the occurrence of a subsequent event is impossible. In the
simplest case of a generalized Bernoulli scheme for uniform random events
followed by the absolu... | 1905.10172v3 |
2019-06-10 | Global existence of weak solutions to the compressible quantum Navier-Stokes equations with degenerate viscosity | We study the compressible quantum Navier-Stokes (QNS) equations with
degenerate viscosity in the three dimensional periodic domains. On the one
hand, we consider QNS with additional damping terms. Motivated by the recent
works [Li-Xin, arXiv:1504.06826] and [Antonelli-Spirito, Arch. Ration. Mech.
Anal., 203(2012), 499-... | 1906.03971v1 |
2019-06-11 | Study of semi-linear $σ$-evolution equations with frictional and visco-elastic damping | In this article, we study semi-linear $\sigma$-evolution equations with
double damping including frictional and visco-elastic damping for any
$\sigma\ge 1$. We are interested in investigating not only higher order
asymptotic expansions of solutions but also diffusion phenomenon in the
$L^p-L^q$ framework, with $1\le p\... | 1906.04471v1 |
2019-07-08 | Damping of density oscillations in neutrino-transparent nuclear matter | We calculate the bulk-viscous dissipation time for adiabatic density
oscillations in nuclear matter at densities of 1-7 times nuclear saturation
density and at temperatures ranging from 1 MeV, where corrections to previous
low-temperature calculations become important, up to 10 MeV, where the
assumption of neutrino tra... | 1907.03795v2 |
2019-07-12 | Decoherence of collective motion in warm nuclei | Collective states in cold nuclei are represented by a wave function that
assigns coherent phases to the participating nucleons. The degree of coherence
decreases with excitation energy above the yrast line because of coupling to
the increasingly dense background of quasiparticle excitations. The
consequences of decoher... | 1907.05569v1 |
2019-07-24 | First-order optimization algorithms via inertial systems with Hessian driven damping | In a Hilbert space setting, for convex optimization, we analyze the
convergence rate of a class of first-order algorithms involving inertial
features. They can be interpreted as discrete time versions of inertial
dynamics involving both viscous and Hessian-driven dampings. The geometrical
damping driven by the Hessian ... | 1907.10536v2 |
2019-07-26 | L^p-asymptotic stability analysis of a 1D wave equation with a nonlinear damping | This paper is concerned with the asymptotic stability analysis of a one
dimensional wave equation with Dirichlet boundary conditions subject to a
nonlinear distributed damping with an L p functional framework, p $\in$ [2,
$\infty$]. Some well-posedness results are provided together with exponential
decay to zero of tra... | 1907.11712v1 |
2019-08-13 | A Gevrey class semigroup, exponential decay and Lack of analyticity for a system formed by a Kirchhoff-Love plate equation and the equation of a membrane-like electric network with indirect fractional damping | The emphasis in this paper is on the Coupled System of a Kirchhoff-Love Plate
Equation with the Equation of a Membrane-like Electrical Network, where the
coupling is of higher order given by the Laplacian of the displacement velocity
$\gamma\Delta u_t$ and the Laplacian of the electric potential field
$\gamma\Delta v_t... | 1908.04826v3 |
2019-08-20 | Partial Optomechanical Refrigeration via Multimode Cold-Damping Feedback | We provide a fully analytical treatment for the partial refrigeration of the
thermal motion of a quantum mechanical resonator under the action of feedback.
As opposed to standard cavity optomechanics where the aim is to isolate and
cool a single mechanical mode, the aim here is to extract the thermal energy
from many v... | 1908.07348v2 |
2019-08-19 | Time Delay in the Swing Equation: A Variety of Bifurcations | The present paper addresses the swing equation with additional delayed
damping as an example for pendulum-like systems. In this context, it is proved
that recurring sub- and supercritical Hopf bifurcations occur if time delay is
increased. To this end, a general formula for the first Lyapunov coefficient in
second orde... | 1908.07996v3 |
2019-08-26 | Description and classification of 2-solitary waves for nonlinear damped Klein-Gordon equations | We describe completely 2-solitary waves related to the ground state of the
nonlinear damped Klein-Gordon equation \begin{equation*}
\partial_{tt}u+2\alpha\partial_{t}u-\Delta u+u-|u|^{p-1}u=0 \end{equation*} on
$\bf R^N$, for $1\leq N\leq 5$ and energy subcritical exponents $p>2$. The
description is twofold.
First, w... | 1908.09527v1 |
2019-08-30 | Magnetization reversal, damping properties and magnetic anisotropy of L10-ordered FeNi thin films | L10 ordered magnetic alloys such as FePt, FePd, CoPt and FeNi are well known
for their large magnetocrystalline anisotropy. Among these, L10-FeNi alloy is
economically viable material for magnetic recording media because it does not
contain rare earth and noble elements. In this work, L10-FeNi films with three
differen... | 1908.11761v1 |
2019-09-24 | DAMPE Excess from Leptophilic Vector Dark Matter: Model Independent Approach | We study all extensions of the Standard Model (SM) with a vector dark matter
(VDM) candidate which can explain the peak structure observed by recent DAMPE
experiment in electron-positron cosmic ray spectrum. In this regard, we
consider all leptophilic renormalizable VDM-SM interactions through scalar,
spinor, and vecto... | 1909.10729v2 |
2019-09-24 | Evaluating the Impacts of Transmission Expansion on Sub-Synchronous Resonance Risk | While transmission expansions are planned to have positive impact on
reliability of power grids, they could increase the risk and severity of some
of the detrimental incidents in power grid mainly by virtue of changing system
configuration, consequently electrical distance. This paper aims to evaluate
and quantify the ... | 1909.11024v1 |
2019-10-02 | Data-Driven Identification of Rayleigh-Damped Second-Order Systems | In this paper, we present a data-driven approach to identify second-order
systems, having internal Rayleigh damping. This means that the damping matrix
is given as a linear combination of the mass and stiffness matrices. These
systems typically appear when performing various engineering studies, e.g.,
vibrational and s... | 1910.00838v1 |
2019-10-06 | Deterministic and random attractors for a wave equation with sign changing damping | The paper gives a detailed study of long-time dynamics generated by weakly
damped wave equations in bounded 3D domains where the damping exponent depends
explicitly on time and may change sign. It is shown that in the case when the
non-linearity is superlinear, the considered equation remains dissipative if
the weighte... | 1910.02430v1 |
2019-10-23 | On the exponential stability of a stratified flow to the 2D IDEAL MHD equations with damping | We study the stability of a type of stratified flows of the two dimensional
inviscid incompressible MHD equations with velocity damping. The exponential
stability for the perturbation near certain stratified flow is investigated in
a strip-type area R*[0,1]. Although the magnetic filed potential is governed by
a transp... | 1910.10598v1 |
2019-10-24 | Wigner instability analysis of the damped Hirota equation | We address the modulation instability of the Hirota equation in the presence
of stochastic spatial incoherence and linear time-dependent
amplification/attenuation processes via the Wigner function approach. We show
that the modulation instability remains baseband type, though the damping
mechanisms substantially reduce... | 1910.11045v2 |
2019-11-01 | The spherical multipole resonance probe: kinetic damping in its spectrum | The multipole resonance probe is one of the recently developed measurement
devices to measure plasma parameter like electron density and temperature based
on the concept of active plasma resonance spectroscopy. The dynamical
interaction between the probe and the plasma in electrostatic, kinetic
description can be model... | 1911.00514v1 |
2019-11-04 | Current-driven skyrmion motion in granular films | Current-driven skyrmion motion in random granular films is investigated with
interesting findings. For a given current, there exists a critical disorder
strength below which its transverse motion could either be boosted below a
critical damping or be hindered above the critical damping, resulting in
current and disorde... | 1911.01245v1 |
2019-11-05 | Reduction of damped, driven Klein-Gordon equations into a discrete nonlinear Schrödinger equation: justification and numerical comparisons | We consider a discrete nonlinear Klein-Gordon equations with damping and
external drive. Using a small amplitude ansatz, one usually approximates the
equation using a damped, driven discrete nonlinear Schr\"odinger equation.
Here, we show for the first time the justification of this approximation by
finding the error b... | 1911.01631v1 |
2019-11-14 | Stability of coupled solitary wave in biomembranes and nerves | In this work, we consider the electromechanical density pulse as a coupled
solitary waves represented by a longitudinal compression wave and an
out-of-plane transversal wave (i.e., perpendicular to the membrane surface). We
analyzed using, the variational approach, the characteristics of the coupled
solitary waves in t... | 1911.05993v1 |
2019-11-19 | On the theory of the nonlinear Landau damping | An exact solution of the collisionless time-dependent Vlasov equation is
found for the first time. By means of this solution the behavior of the
Langmuir waves in the nonlinear stage is considered. The analysis is restricted
by the consideration of the first nonlinear approximation keeping the second
power of the elect... | 1911.08294v2 |
2019-11-16 | Justification of the discrete nonlinear Schrödinger equation from a parametrically driven damped nonlinear Klein-Gordon equation and numerical comparisons | We consider a damped, parametrically driven discrete nonlinear Klein-Gordon
equation, that models coupled pendula and micromechanical arrays, among others.
To study the equation, one usually uses a small-amplitude wave ansatz, that
reduces the equation into a discrete nonlinear Schr\"odinger equation with
damping and p... | 1911.08514v1 |
2019-11-26 | On the Complexity of Minimum-Cost Networked Estimation of Self-Damped Dynamical Systems | In this paper, we consider the optimal design of networked estimators to
minimize the communication/measurement cost under the networked observability
constraint. This problem is known as the minimum-cost networked estimation
problem, which is generally claimed to be NP-hard. The main contribution of
this work is to pr... | 1911.11381v1 |
2019-12-30 | A Link Between Relativistic Rest Energy and Fractionary Momentum Operators of Order 1/2 | The solution of a causal fractionary wave equation in an infinite potential
well was obtained. First, the so-called "free particle" case was solved, giving
as normalizable solutions a superposition of damped oscillations similar to a
wave packet. From this results, the infinite potential well case was then
solved. The ... | 1912.12770v4 |
2020-01-06 | A continuous contact force model for impact analysis in multibody dynamics | A new continuous contact force model for contacting problems with regular or
irregular contacting surfaces and energy dissipations in multibody systems is
presented and discussed in this work. The model is developed according to Hertz
law and a hysteresis damping force is introduced for modeling the energy
dissipation ... | 2001.01344v1 |
2020-01-06 | Boresight Alignment of DArk Matter Particle Explorer | The DArk Matter Particle Explorer (DAMPE) can measure $\gamma$-rays in the
energy range from a few GeV to about 10 TeV. The direction of each $\gamma$-ray
is reconstructed with respect to the reference system of the DAMPE payload. In
this paper, we adopt a maximum likelihood method and use the $\gamma$-ray data
centere... | 2001.01804v1 |
2020-01-09 | Nonlinear inviscid damping near monotonic shear flows | We prove nonlinear asymptotic stability of a large class of monotonic shear
flows among solutions of the 2D Euler equations in the channel
$\mathbb{T}\times[0,1]$. More precisely, we consider shear flows $(b(y),0)$
given by a function $b$ which is Gevrey smooth, strictly increasing, and linear
outside a compact subset ... | 2001.03087v1 |
2020-02-03 | Semi-active $\mathcal{H}_{\infty}$ damping optimization by adaptive interpolation | In this work we consider the problem of semi-active damping optimization of
mechanical systems with fixed damper positions. Our goal is to compute a
damping that is locally optimal with respect to the $\mathcal{H}_\infty$-norm
of the transfer function from the exogenous inputs to the performance outputs.
We make use of... | 2002.00617v1 |
2020-03-25 | A Novel Wide-Area Control Strategy for Damping of Critical Frequency Oscillations via Modulation of Active Power Injections | This paper proposes a novel wide-area control strategy for modulating the
active power injections to damp the critical frequency oscillations in power
systems, this includes the inter-area oscillations and the transient frequency
swing. The proposed method pursues an efficient utilization of the limited
power reserve o... | 2003.11397v1 |
2020-03-25 | Sharp ultimate velocity bounds for the general solution of some linear second order evolution equation with damping and bounded forcing | We consider a class of linear second order differential equations with
damping and external force. We investigate the link between a uniform bound on
the forcing term and the corresponding ultimate bound on the velocity of
solutions, and we study the dependence of that bound on the damping and on the
"elastic force".
... | 2003.11579v1 |
2020-03-28 | Energy correction based on fluorescence attenuation of DAMPE | The major scientific goals of DArk Matter Particle Explorer (DAMPE) are to
study cosmic-ray electrons (including positrons) and gamma rays from 5 GeV to
10 TeV and nuclei from Z = 1 to 26 up to 100 TeV. The deposited energy measured
by the Bismuth Germanate Oxide (BGO) calorimeter of DAMPE is affected by
fluorescence a... | 2003.12717v1 |
2020-04-02 | A finite element model for seismic response analysis of free-standing rocking columns with vertical dampers | This paper investigates finite-element modeling of a vertically damped
free-standing rocking column. The paper first derives the nonlinear equation of
motion for the coupled system and then compares the analytical solution with
finite-element model. Finite-element model is being produced using open source
framework nam... | 2004.01060v1 |
2020-04-02 | Simulating the effect of weak measurements by a phase damping channel and determining different measures of bipartite correlations in nuclear magnetic resonance | Quantum discord is a measure based on local projective measurements which
captures quantum correlations that may not be fully captured by entanglement. A
change in the measurement process, achieved by replacing rank-one projectors
with a weak positive operator-valued measure (POVM), allows one to define weak
variants o... | 2004.01237v2 |
2020-04-24 | A rigorous derivation and energetics of a wave equation with fractional damping | We consider a linear system that consists of a linear wave equation on a
horizontal hypersurface and a parabolic equation in the half space below. The
model describes longitudinal elastic waves in organic monolayers at the
water-air interface, which is an experimental setup that is relevant for
understanding wave propa... | 2004.11830v1 |
2020-04-25 | Pulse-assisted magnetization switching in magnetic nanowires at picosecond and nanosecond timescales with low energy | Detailed understanding of spin dynamics in magnetic nanomaterials is
necessary for developing ultrafast, low-energy and high-density spintronic
logic and memory. Here, we develop micromagnetic models and analytical
solutions to elucidate the effect of increasing damping and uniaxial anisotropy
on magnetic field pulse-a... | 2004.12243v1 |
2020-05-01 | Stability of Forced-Damped Response in Mechanical Systems from a Melnikov Analysis | Frequency responses of multi-degree-of-freedom mechanical systems with weak
forcing and damping can be studied as perturbations from their conservative
limit. Specifically, recent results show how bifurcations near resonances can
be predicted analytically from conservative families of periodic orbits
(nonlinear normal ... | 2005.00444v2 |
2020-05-04 | Remarks on asymptotic order for the linear wave equation with the scale-invariant damping and mass with $L^r$-data | In the present paper, we consider the linear wave equation with the
scale-invariant damping and mass. It is known that the global behavior of the
solution depends on the size of the coefficients in front of the damping and
mass at initial time $t=0$. Indeed, the solution satisfies the similar decay
estimate to that of ... | 2005.01335v2 |
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