publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
1996-11-25 | Damping rates of hard momentum particles in a cold ultrarelativistic plasma | We compute the damping rates of one-particle excitations in a cold
ultrarelativistic plasma to leading order in the coupling constant e for three
types of interaction: Yukawa coupling to a massless scalar boson, QED and QCD.
Damping rates of charged particles in QED and QCD are of order e^3 mu, while
damping rates of o... | 9611415v2 |
1999-09-24 | Gauge Invariance of Nonlinear Landau Damping Rate of Bose Excitations in Quark-Gluon Plasma | On the basis of the approximate dynamical equations describing the behavior
of quark-gluon plasma (QGP) in the semiclassical limit and Yang-Mills equation,
the kinetic equation for longitudinal waves (plasmons) is obtained. With the
Ward identities the gauge invariance of obtained nonlinear Landau damping rate
is prove... | 9909505v1 |
2005-07-16 | Sharp estimates for the number of degrees of freedom for the damped-driven 2D Navier--Stokes equations | We derive upper bounds for the number of asymptotic degrees (determining
modes and nodes) of freedom for the two-dimensional Navier--Stokes system and
Navier-Stokes system with damping. In the first case we obtain the previously
known estimates in an explicit form, which are larger than the fractal
dimension of the glo... | 0507327v1 |
2006-12-04 | A singular perturbation approach for choosing PageRank damping factor | The choice of the PageRank damping factor is not evident. The Google's choice
for the value c=0.85 was a compromise between the true reflection of the Web
structure and numerical efficiency. However, the Markov random walk on the
original Web Graph does not reflect the importance of the pages because it
absorbs in dead... | 0612079v1 |
1998-10-26 | Microscopic Structure of Rotational Damping | The damping of collective rotational motion is studied microscopically,
making use of shell model calculations based on the cranked Nilsson deformed
mean-field and on residual two-body interactions, and focusing on the shape of
the gamma-gamma correlation spectra and on its systematic behavior. It is shown
that the spe... | 9810066v1 |
2004-07-25 | Rotational damping in a multi-$j$ shell particles-rotor model | The damping of collective rotational motion is investigated by means of
particles-rotor model in which the angular momentum coupling is treated exactly
and the valence nucleons are in a multi-$j$ shell mean-field. It is found that
the onset energy of rotational damping is around 1.1 MeV above yrast line, and
the number... | 0407089v3 |
2001-07-19 | Manifold Damping of Transverse Wakefields in High Phase Advance Traveling Wave Structures and Local Damping of Dipole Wakefields in Standing Wave Accelerators | Operating the SLAC/KEK DDS (Damped Detuned Structure) X-band linacs at high
gradients (in excess of 70MV/m) has recently been found to be limited by the
accelerator structures breaking down and as a consequence severe damage occurs
to the cells which makes the structures inoperable. A series of recent
experiments at SL... | 0107048v1 |
2002-06-28 | Manifold Damping Of Wakefields In High Phase Advance Linacs For The NLC | Earlier RDDS (Rounded Damped Detuned Structures) [1,2], designed, fabricated
and tested at SLAC, in collaboration with KEK, have been shown to damp
wakefields successfully. However, electrical breakdown has been found to occur
in these structures and this makes them inoperable at the desired gradient.
Recent results [3... | 0206090v1 |
2006-06-30 | Nonlinear Damping of the LC Circuit using Anti-parallel Diodes | We investigate a simple variation of the series RLC circuit in which
anti-parallel diodes replace the resistor. This results in a damped harmonic
oscillator with a nonlinear damping term that is maximal at zero current and
decreases with an inverse current relation for currents far from zero. A set of
nonlinear differe... | 0606261v1 |
1995-11-11 | A New Look at the Landau's Theory of Spreading and Damping of Waves in Collisionless Plasmas | The theory of plasma waves and Landau damping in Maxwellian plasmas, Landau's
``rule of pass around poles'' include doubtful statements, particularly related
to an artificial ``constructing'' of the dispersion equation, what should allow
the possibility of its solution otherwise not existing at all, and the
possibility... | 9511001v1 |
2001-07-27 | Quantum limits of cold damping with optomechanical coupling | Thermal noise of a mirror can be reduced by cold damping. The displacement is
measured with a high-finesse cavity and controlled with the radiation pressure
of a modulated light beam. We establish the general quantum limits of noise in
cold damping mechanisms and we show that the optomechanical system allows to
reach t... | 0107138v2 |
2005-05-20 | A symmetric treatment of damped harmonic oscillator in extended phase space | Extended phase space (EPS) formulation of quantum statistical mechanics
treats the ordinary phase space coordinates on the same footing and thereby
permits the definite the canonical momenta conjugate to these coordinates . The
extended lagrangian and extended hamiltonian are defined in EPS by the same
procedure as one... | 0505147v1 |
2007-08-28 | Pattern formation in the damped Nikolaevskiy equation | The Nikolaevskiy equation has been proposed as a model for seismic waves,
electroconvection and weak turbulence; we show that it can also be used to
model transverse instabilities of fronts. This equation possesses a large-scale
"Goldstone" mode that significantly influences the stability of spatially
periodic steady s... | 0708.3735v1 |
2008-01-12 | Strong and weak coupling limits in optics of quantum well excitons | A transition between the strong (coherent) and weak (incoherent) coupling
limits of resonant interaction between quantum well (QW) excitons and bulk
photons is analyzed and quantified as a function of the incoherent damping rate
caused by exciton-phonon and exciton-exciton scattering. For confined QW
polaritons, a seco... | 0801.1895v2 |
2008-01-22 | Damped Bloch Oscillations of Bose-Einstein Condensates in Disordered Potential Gradients | We investigate both experimentally and theoretically disorder induced damping
of Bloch oscillations of Bose-Einstein condensates in optical lattices. The
spatially inhomogeneous force responsible for the damping is realised by a
combination of a disordered optical and a magnetic gradient potential. We show
that the inh... | 0801.3437v2 |
2008-02-26 | Fractional Langevin Equation: Over-Damped, Under-Damped and Critical Behaviors | The dynamical phase diagram of the fractional Langevin equation is
investigated for harmonically bound particle. It is shown that critical
exponents mark dynamical transitions in the behavior of the system. Four
different critical exponents are found. (i) $\alpha_c=0.402\pm 0.002$ marks a
transition to a non-monotonic ... | 0802.3777v1 |
2008-04-26 | Vibrational modes of metal nanoshells and bimetallic core-shell nanoparticles | We study theoretically spectrum of radial vibrational modes in composite
metal nanostructures such as bimetallic core-shell particles and metal
nanoshells with dielectric core in an environment. We calculate frequencies and
damping rates of fundamental (breathing) modes for these nanostructures along
with those of two ... | 0804.4249v2 |
2008-09-26 | Damping of the baryon acoustic oscillations in the matter power spectrum as a probe of the growth factor | We investigate the damping of the baryon acoustic oscillations (BAO)
signature in the matter power spectrum due to the quasi-nonlinear clustering of
density perturbations. On the basis of the third order perturbation theory, we
construct a fitting formula of the damping in an analytic way. This
demonstrates that the da... | 0809.4538v2 |
2008-10-07 | Corotational Damping of Diskoseismic C-modes in Black Hole Accretion Discs | Diskoseismic c-modes in accretion discs have been invoked to explain
low-frequency variabilities observed in black-hole X-ray binaries. These modes
are trapped in the inner-most region of the disc and have frequencies much
lower than the rotation frequency at the disc inner radius. We show that
because the trapped wave... | 0810.1299v3 |
2008-10-10 | Non-standard conserved Hamiltonian structures in dissipative/damped systems : Nonlinear generalizations of damped harmonic oscillator | In this paper we point out the existence of a remarkable nonlocal
transformation between the damped harmonic oscillator and a modified Emden type
nonlinear oscillator equation with linear forcing, $\ddot{x}+\alpha
x\dot{x}+\beta x^3+\gamma x=0,$ which preserves the form of the time
independent integral, conservative Ha... | 0810.1819v2 |
2008-11-05 | R-matrix inner-shell electron-impact excitation of Fe$^{15+}$ including Auger-plus-radiation damping | We present results for the inner-shell electron-impact excitation of
Fe$^{15+}$ using the intermediate-coupling frame transformation {\it R}-matrix
approach in which Auger-plus-radiation damping has been included. The target
and close-coupling expansions are both taken to be the 134 levels belonging to
the configuratio... | 0811.0750v1 |
2009-03-11 | An alternate design for CLIC main linac wakefield suppression | The present design of the main accelerating structure for CLIC is based on
heavy damping (WDS) with a Q of ~10. The wakefield suppression in this case
entails locating the damping materials in relatively close proximity to the
accelerating cells. Herein we present an alternate design for the main
accelerating structure... | 0903.1935v1 |
2009-04-17 | Revealing Sub-Surface Vibrational Modes by Atom-Resolved Damping Force Spectroscopy | We propose to use the damping signal of an oscillating cantilever in dynamic
atomic force microscopy as a noninvasive tool to study the vibrational
structure of the substrate. We present atomically resolved maps of damping in
carbon nanotube peapods, capable of identifying the location and packing of
enclosed Dy@C82 mo... | 0904.2666v1 |
2009-08-04 | Time domain detection of pulsed spin torque damping reduction | Combining multiple ultrafast spin torque impulses with a 5 nanosecond
duration pulse for damping reduction, we observe time-domain precession which
evolves from an initial 1 ns duration transient with changing precessional
amplitude to constant amplitude oscillations persisting for over 2 ns. These
results are consiste... | 0908.0481v1 |
2009-10-02 | Damping of a nanomechanical oscillator strongly coupled to a quantum dot | We present theoretical and experimental results on the mechanical damping of
an atomic force microscope cantilever strongly coupled to a self-assembled InAs
quantum dot. When the cantilever oscillation amplitude is large, its motion
dominates the charge dynamics of the dot which in turn leads to nonlinear,
amplitude-de... | 0910.0308v1 |
2010-01-27 | The spatial damping of magnetohydrodynamic waves in a flowing partially ionised prominence plasma | Solar prominences are partially ionised plasmas displaying flows and
oscillations. These oscillations show time and spatial damping and, commonly,
have been explained in terms of magnetohydrodynamic (MHD) waves. We study the
spatial damping of linear non-adiabatic MHD waves in a flowing partially
ionised plasma, having... | 1001.4962v1 |
2010-03-04 | Internal dissipation of a polymer | The dynamics of flexible polymer molecules are often assumed to be governed
by hydrodynamics of the solvent. However there is considerable evidence that
internal dissipation of a polymer contributes as well. Here we investigate the
dynamics of a single chain in the absence of solvent to characterize the nature
of this ... | 1003.0944v2 |
2010-05-26 | Indirect Evidence for Lévy Walks in Squeeze Film Damping | Molecular flow gas damping of mechanical motion in confined geometries, and
its associated noise, is important in a variety of fields, including precision
measurement, gravitational wave detection, and MEMS devices. We used two
torsion balance instruments to measure the strength and distance-dependence of
`squeeze film... | 1005.4926v2 |
2010-05-28 | Gravitational wave asteroseismology with fast rotating neutron stars | We investigate damping and growth times of the f-mode for rapidly rotating
stars and a variety of different polytropic equations of state in the Cowling
approximation. We discuss the differences in the eigenfunctions of co- and
counterrotating modes and compute the damping times of the f-mode for several
EoS and all ro... | 1005.5228v3 |
2010-06-09 | Synchrotron oscillation damping due to beam-beam collisions | In DA{\Phi}NE, the Frascati e+/e- collider, the crab waist collision scheme
has been successfully implemented in 2008 and 2009. During the collision
operations for Siddharta experiment, an unusual synchrotron damping effect has
been observed. Indeed, with the longitudinal feedback switched off, the
positron beam become... | 1006.1783v1 |
2010-06-30 | Landau Damping of Baryon Structure Formation in the Post Reionization Epoch | It has been suggested by Chen and Lai that the proper description of the
large scale structure formation of the universe in the post-reionization era,
which is conventionally characterized via gas hydrodynamics, should include the
plasma collective effects in the formulation. Specifically, it is the combined
pressure f... | 1006.5777v1 |
2010-07-12 | Passive damping of beam vibrations through distributed electric networks and piezoelectric transducers: prototype design and experimental validation | The aim of this work is two-fold: to design devices for passive electric
damping of structural vibrations by distributed piezoelectric transducers and
electric networks, and to experimentally validate the effectiveness of such a
damping concept. Two different electric networks are employed, namely a purely
resistive ne... | 1007.1863v1 |
2010-07-23 | Highly-damped quasi-normal frequencies for piecewise Eckart potentials | Highly-damped quasi-normal frequencies are very often of the form omega_n =
(offset) + i n (gap). We investigate the genericity of this phenomenon by
considering a model potential that is piecewise Eckart (piecewise
Poeschl-Teller), and developing an analytic "quantization condition" for the
highly-damped quasi-normal ... | 1007.4039v2 |
2010-09-23 | Asymptotic Spectrum of Kerr Black Holes in the Small Angular Momentum Limit | We study analytically the highly damped quasinormal modes of Kerr black holes
in the small angular momentum limit. To check the previous analytic
calculations in the literature, which use a combination of radial and tortoise
coordinates, we reproduce all the results using the radial coordinate only.
According to the ea... | 1009.4632v2 |
2010-12-31 | Exact Tkachenko modes and their damping in the vortex lattice regime of rapidly rotating bosons | We have found an exact analytical solution of the Bogoliubov-de Gennes
equations for the Tkachenko modes of the vortex lattice in the lowest Landau
level (LLL) in the thermodynamic limit at any momenta and calculated their
damping rates. At finite temperatures both Beliaev and Landau damping leads to
momentum independe... | 1101.0269v1 |
2011-01-20 | Decoherence and entanglement degradation of a qubit-qutrit system in non-inertial frames | We study the effect of decoherence on a qubit-qutrit system under the
influence of global, local and multilocal decoherence in non-inertial frames.
We show that the entanglement sudden death can be avoided in non-inertial
frames in the presence of amplitude damping, depolarizing and phase damping
channels. However, deg... | 1101.3986v1 |
2011-10-05 | Radiation damping in pulsed Gaussian beams | We consider the effects of radiation damping on the electron dynamics in a
Gaussian beam model of a laser field. For high intensities, i.e. with
dimensionless intensity a0 \gg 1, it is found that the dynamics divide into
three regimes. For low energy electrons (low initial {\gamma}-factor,
{\gamma}0) the radiation damp... | 1110.0996v1 |
2012-03-28 | Analysis of the absorbing layers for the weakly-compressible lattice Boltzmann schemes | It has been demonstrated that Lattice Boltzmann schemes (LBSs) are very
efficient for Computational AeroAcoustics (CAA). In order to handle the issue
of absorbing acoustic boundary conditions for LBS, three kinds of damping terms
are proposed and added into the right hand sides of the governing equations of
LBS. From t... | 1203.6350v1 |
2012-04-11 | Formation of bremsstrahlung in an absorptive QED/QCD medium | The radiative energy loss of a relativistic charge in a dense, absorptive
medium can be affected significantly by damping phenomena. The effect is more
pronounced for large energies of the charge and/or large damping of the
radiation. This can be understood in terms of a competition between the
formation time of bremss... | 1204.2469v2 |
2012-06-05 | Existence and exponential stability of a damped wave equation with dynamic boundary conditions and a delay term | In this paper we consider a multi-dimensional wave equation with dynamic
boundary conditions related to the Kelvin-Voigt damping and a delay term acting
on the boundary. If the weight of the delay term in the feedback is less than
the weight of the term without delay or if it is greater under an assumption
between the ... | 1206.1010v1 |
2012-08-27 | Analysis of the damped quantum search and its application to the one-dimensional Ising system | An analysis on the damped quantum search by exploring the rate at which the
target state is obtained. The results were compared with that of the classical
search since the standard Grover's algorithm does not give a convergent result
if the number of target state is unknown. For a large number of target states,
the cla... | 1208.5509v1 |
2012-10-20 | Radiative damping of surface plasmon resonance in spheroidal metallic nanoparticle embedded in a dielectric medium | The local field approach and kinetic equation method is applied to calculate
the surface plasmon radiative damping in a spheroidal metal nanoparticle
embedded in any dielectric media. The radiative damping of the surface plasmon
resonance as a function of the particle radius, shape, dielectric constant of
the surroundi... | 1210.5647v1 |
2012-11-11 | Dissipation in relativistic superfluid neutron stars | We analyze damping of oscillations of general relativistic superfluid neutron
stars. To this aim we extend the method of decoupling of superfluid and normal
oscillation modes first suggested in [Gusakov & Kantor PRD 83, 081304(R)
(2011)]. All calculations are made self-consistently within the finite
temperature superfl... | 1211.2452v1 |
2013-03-07 | Universal damping behavior of dipole oscillations of one-dimensional ultracold gases induced by quantum phase slips | We study superflow decay via quantum phase slips in trapped one-dimensional
(1D) quantum gases through dipole oscillations induced by sudden displacement
of the trapping potential. We find the relation between the damping rate of the
dipole oscillation $G$ and the phase-slip nucleation rate $\Gamma$ as $G\propto
\Gamma... | 1303.1616v1 |
2013-07-16 | Blow-up of solutions to the one-dimensional semilinear wave equation with damping depending on time and space variables | In this paper, we give a small data blow-up result for the one-dimensional
semilinear wave equation with damping depending on time and space variables. We
show that if the damping term can be regarded as perturbation, that is,
non-effective damping in a certain sense, then the solution blows up in finite
time for any p... | 1307.4260v2 |
2013-11-12 | Landau damping: paraproducts and Gevrey regularity | We give a new, simpler, proof of nonlinear Landau damping on T^d in
Gevrey-1/s regularity (s > 1/3) which matches the regularity requirement
predicted by the formal analysis of Mouhot and Villani in the original proof of
Landau damping [Acta Mathematica 2011]. Our proof combines in a novel way ideas
from the original p... | 1311.2870v1 |
2014-02-26 | Comparison of methods for numerical calculation of continuum damping | Continuum resonance damping is an important factor in determining the
stability of certain global modes in fusion plasmas. A number of analytic and
numerical approaches have been developed to compute this damping, particularly
in the case of the toroidicity-induced shear Alfv\'en eigenmode. This paper
compares results ... | 1402.6389v1 |
2014-05-16 | Quantum corrections to nonlinear ion acoustic wave with Landau damping | Quantum corrections to nonlinear ion acoustic wave with Landau damping have
been computed using Wigner equation approach. The dynamical equation governing
the time development of nonlinear ion acoustic wave with semiclassical quantum
corrections is shown to have the form of higher KdV equation which has higher
order no... | 1405.4107v1 |
2014-05-19 | Mesh Size and Damped Edge Effects in Micromagnetic Spin Wave Simulation | We have studied the dependence of spin wave dispersion on the characteristics
of the mesh used in a finite element micromagnetic simulation. It is shown that
the dispersion curve has a cut off at a frequency which is analytically
predictable. The frequency depends on the average mesh length used for the
simulation. Bas... | 1405.4615v2 |
2014-07-08 | Fourier-Hermite spectral representation for the Vlasov-Poisson system in the weakly collisional limit | We study Landau damping in the 1+1D Vlasov-Poisson system using a
Fourier-Hermite spectral representation. We describe the propagation of free
energy in phase space using forwards and backwards propagating Hermite modes
recently developed for gyrokinetics [Schekochihin et al. (2014)]. The change in
the electric field c... | 1407.1932v1 |
2014-08-14 | Particle Dynamics in Damped Nonlinear Quadrupole Ion Traps | We examine the motions of particles in quadrupole ion traps as a function of
damping and trapping forces, including cases where nonlinear damping or
nonlinearities in the electric field geometry play significant roles. In the
absence of nonlinearities, particles are either damped to the trap center or
ejected, while th... | 1409.6262v1 |
2015-01-03 | Finite-Parameters Feedback Control for Stabilizing Damped Nonlinear Wave Equations | In this paper we introduce a finite-parameters feedback control algorithm for
stabilizing solutions of various classes of damped nonlinear wave equations.
Specifically, stabilization the zero steady state solution of initial boundary
value problems for nonlinear weakly and strongly damped wave equations,
nonlinear wave... | 1501.00556v1 |
2015-06-26 | A Universal Damping Mechanism of Quantum Vibrations in Deep Sub-Barrier Fusion Reactions | We demonstrate the damping of quantum octupole vibrations near the touching
point when two colliding nuclei approach each other in the mass-asymmetric
$^{208}$Pb + $^{16}$O system, for which the strong fusion hindrance was clearly
observed. We, for the first time, apply the random-phase approximation method
to the heav... | 1506.07963v1 |
2015-07-28 | Phenomenology of chiral damping in noncentrosymmetric magnets | A phenomenology of magnetic chiral damping is proposed in the context of
magnetic materials lacking inversion symmetry breaking. We show that the
magnetic damping tensor adopts a general form that accounts for a component
linear in magnetization gradient in the form of Lifshitz invariants. We propose
different microsco... | 1507.07762v1 |
2015-08-06 | Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics | A phenomenological equation called Landau-Lifshitz-Baryakhtar (LLBar)
equation, which could be viewed as the combination of Landau-Lifshitz (LL)
equation and an extra "exchange damping" term, was derived by Baryakhtar using
Onsager's relations. We interpret the origin of this "exchange damping" as
nonlocal damping by l... | 1508.01478v1 |
2016-01-05 | Vlasov Simulations of Electron-Ion Collision Effects on Damping of Electron Plasma Waves | Collisional effects can play an essential role in the dynamics of plasma
waves by setting a minimum damping rate and by interfering with wave-particle
resonances. Kinetic simulations of the effects of electron-ion pitch angle
scattering on Electron Plasma Waves (EPWs) are presented here. In particular,
the effects of s... | 1601.01002v1 |
2016-02-13 | The effect of orbital damping during planet migration on the Inclination and Eccentricity Distributions of Neptune Trojans | We explore planetary migration scenarios for formation of high inclination
Neptune Trojans (NTs) and how they are affected by the planetary migration of
Neptune and Uranus. If Neptune and Uranus's eccentricity and inclination were
damped during planetary migration, then their eccentricities and inclinations
were higher... | 1602.04303v1 |
2016-03-08 | Damping of the Higgs and Nambu-Goldstone modes of superfluid Bose gases at finite temperatures | We study collective modes of superfluid Bose gases in optical lattices at
commensurate fillings. We focus on the vicinity of the quantum phase transition
to the Mott insulator, where there exists the Higgs amplitude mode in addition
to the Nambu-Goldstone phase mode associated with the spontaneous U(1) symmetry
breakin... | 1603.02395v1 |
2016-04-12 | Offline software for the DAMPE experiment | A software system has been developed for the DArk Matter Particle Explorer
(DAMPE) mission, a satellite-based experiment. The DAMPE software is mainly
written in C++ and steered using Python script. This article presents an
overview of the DAMPE offline software, including the major architecture design
and specific imp... | 1604.03219v6 |
2016-04-18 | Stabilization of Damped Waves on Spheres and Zoll Surfaces of Revolution | We study the strong stabilization of wave equations on some sphere-like
manifolds, with rough damping terms which do not satisfy the geometric control
condition posed by Rauch-Taylor and Bardos-Lebeau-Rauch. We begin with an
unpublished result of G. Lebeau, which states that on S^d , the indicator
function of the upper... | 1604.05218v2 |
2016-07-25 | Damping of parametrically excited magnons in the presence of the longitudinal spin Seebeck effect | The impact of the longitudinal spin Seebeck effect (LSSE) on the magnon
damping in magnetic-insulator/nonmagnetic-metal bilayers was recently discussed
in several reports. However, results of those experiments can be blurred by
multimode excitation within the measured linewidth. In order to avoid possible
intermodal in... | 1607.07274v1 |
2016-07-27 | Frequency dispersion of small-amplitude capillary waves in viscous fluids | This work presents a detailed study of the dispersion of capillary waves with
small amplitude in viscous fluids using an analytically derived solution to the
initial value problem of a small-amplitude capillary wave as well as direct
numerical simulation. A rational parametrization for the dispersion of
capillary waves... | 1607.08266v1 |
2016-10-18 | On the stability of the Bresse system with frictional damping | In this paper, we consider the Bresse system with frictional damping terms
and prove some optimal decay results for the $L^2$-norm of the solution and its
higher order derivatives. In fact, if we consider just one damping term acting
on the second equation of the solution, we show that the solution does not
decay at al... | 1610.05500v2 |
2017-01-12 | Blow-up for semilinear wave equations with the scale invariant damping and super-Fujita exponent | The blow-up for semilinear wave equations with the scale invariant damping
has been well-studied for sub-Fujita exponent. However, for super-Fujita
exponent, there is only one blow-up result which is obtained in 2014 by
Wakasugi in the case of non-effective damping. In this paper we extend his
result in two aspects by ... | 1701.03232v3 |
2017-02-17 | Transition of multi-diffusive states in a biased periodic potential | We study a frequency-dependent damping model of hyper-diffusion within the
generalized Langevin equation. The model allows for the colored noise defined
by its spectral density, assumed to be proportional to $\omega^{\delta-1}$ at
low frequencies with $0<\delta<1$ (sub-Ohmic damping) or $1<\delta<2$
(super-Ohmic dampin... | 1702.05370v1 |
2017-09-27 | Wave turbulence in vibrating plates : the effect of damping | The effect of damping in the wave turbulence regime for thin vibrating plates
is studied. An experimental method, allowing measurements of dissipation in the
system at all scales, is first introduced. Practical experimental devices for
increasing the dissipation are used. The main observable consequence of
increasing t... | 1709.09438v1 |
2017-11-02 | Vibration Damping of Carbon Nanotube Assembly Materials | Vibration reduction is of great importance in various engineering
applications, and a material that exhibits good vibration damping along with
high strength and modulus has become more and more vital. Owing to the superior
mechanical property of carbon nanotube (CNT), new types of vibration damping
material can be deve... | 1711.00623v1 |
2017-12-05 | Dark Matter Annihilation from Nearby Ultra-compact Micro Halos to Explain the Tentative Excess at ~1.4 TeV in DAMPE data | The tentative 1.4 TeV excess in the $e^+e^-$ spectrum measured by The DArk
Matter Particle Explorer (DAMPE) motivates the possible existence of one or
more local dark matter concentrated regions. In particular, Ultra-compact Micro
Halos (UCMHs) seeded by large density perturbations in the early universe,
allocated with... | 1712.01724v2 |
2017-12-21 | A new charge reconstruction algorithm for the DAMPE silicon microstrip detector | The DArk Matter Particle Explorer (DAMPE) is one of the four satellites
within the Strategic Pioneer Research Program in Space Science of the Chinese
Academy of Science (CAS). The Silicon-Tungsten Tracker (STK), which is composed
of 768 singled-sided silicon microstrip detectors, is one of the four
subdetectors in DAMP... | 1712.08011v1 |
2018-01-23 | The dominancy of damping like torque for the current induced magnetization switching in Pt/Co/W multilayers | Two classes of spin-orbit coupling (SOC) mechanisms have been considered as
candidate sources for the spin orbit torque (SOT): the spin Hall Effect (SHE)
in heavy metals with strong SOC and the Rashba effect arising from broken
inversion symmetry at material surfaces and interfaces. In this work, we have
investigated t... | 1801.07408v1 |
2018-02-20 | The damped wave equation with unbounded damping | We analyze new phenomena arising in linear damped wave equations on unbounded
domains when the damping is allowed to become unbounded at infinity. We prove
the generation of a contraction semigroup, study the relation between the
spectra of the semigroup generator and the associated quadratic operator
function, the con... | 1802.07026v1 |
2018-05-29 | Enhancing precision of damping rate by PT symmetric Hamiltonian | We utilize quantum Fisher information to investigate the damping parameter
precision of a dissipative qubit. PT symmetric non-Hermitian Hamiltonian is
used to enhance the parameter precision in two models: one is direct PT
symmetric quantum feedback; the other is that the damping rate is encoded into
a effective PT sym... | 1805.11216v1 |
2018-05-31 | Damping Effect on PageRank Distribution | This work extends the personalized PageRank model invented by Brin and Page
to a family of PageRank models with various damping schemes. The goal with
increased model variety is to capture or recognize a larger number of types of
network activities, phenomena and propagation patterns. The response in
PageRank distribut... | 1806.00127v1 |
2018-08-10 | Relativistic charge solitons created due to nonlinear Landau damping: A candidate for explaining coherent radio emission in pulsars | A potential resolution for the generation of coherent radio emission in
pulsar plasma is the existence of relativistic charge solitons, which are
solutions of nonlinear Schr\"{o}dinger equation (NLSE). In an earlier study,
Melikidze et al. (2000) investigated the nature of these charge solitons;
however, their analysis... | 1808.03657v1 |
2018-11-21 | Super Damping of Mechanical Vibrations | We report the phenomenon of coherent super decay, where a linear sum of
several damped oscillators can collectively decay much faster than the
individual ones in the first stage, followed by stagnating ones after more than
90 percent of the energy has already been dissipated. The parameters of the
damped oscillators fo... | 1811.08621v2 |
2018-11-29 | Flowing fibers as a proxy of turbulence statistics | The flapping states of a flexible fiber fully coupled to a three-dimensional
turbulent flow are investigated via state-of-the-art numerical methods. Two
distinct flapping regimes are predicted by the phenomenological theory recently
proposed by Rosti et al. [Phys. Rev. Lett. 121, 044501, 2018]: the under-damped
regime,... | 1811.12023v2 |
2018-11-29 | The Lugiato-Lefever equation with nonlinear damping caused by two photon absorption | In this paper we investigate the effect of nonlinear damping on the
Lugiato-Lefever equation $$ \i \partial_t a = -(\i-\zeta) a - da_{xx}
-(1+\i\kappa)|a|^2a +\i f $$ on the torus or the real line. For the case of the
torus it is shown that for small nonlinear damping $\kappa>0$ stationary
spatially periodic solutions ... | 1811.12200v3 |
2018-11-26 | Linear Theory of Electron-Plasma Waves at Arbitrary Collisionality | The dynamics of electron-plasma waves are described at arbitrary
collisionality by considering the full Coulomb collision operator. The
description is based on a Hermite-Laguerre decomposition of the velocity
dependence of the electron distribution function. The damping rate, frequency,
and eigenmode spectrum of electr... | 1811.12855v2 |
2019-01-17 | Influences of interfacial oxidization on surface magnetic energy, magnetic damping and spin-orbit-torques in Pt / ferromagnet / capping structures | We investigate the effect of capping layer (CAP) on the interfacial magnetic
anisotropy energy density (K_S), magnetic damping ({\alpha}), and spin-orbit
torques (SOTs) in heavy-metal (Pt) / ferromagnet (Co or Py) / CAP (MgO/Ta,
HfOx, or TaN). At room temperature (RT) the CAP materials influence the
effective magnitude... | 1901.05777v1 |
2019-05-31 | The amplitude of solar p-mode oscillations from three-dimensional convection simulations | The amplitude of solar p-mode oscillations is governed by stochastic
excitation and mode damping, both of which take place in the surface convection
zone. However, the time-dependent, turbulent nature of convection makes it
difficult to self-consistently study excitation and damping processes through
the use of traditi... | 1905.13397v2 |
2019-10-03 | Many-body collision contributions to electron momentum damping rates in a plasma influenced by electron strong coupling | Experimental studies of electron-ion collision rates in an ultracold neutral
plasma (UNP) can be conducted through measuring the rate of electron plasma
oscillation damping. For sufficiently cold and dense conditions where strong
coupling influences are important, the measured damping rate was faster by 37\%
than theor... | 1910.01707v1 |
2019-10-18 | Escape of a forced-damped particle from weakly nonlinear truncated potential well | Escape from a potential well is an extreme example of transient behavior. We
consider the escape of the harmonically forced particle under viscous damping
from the benchmark truncated weakly nonlinear potential well. Main attention is
paid to most interesting case of primary 1:1 resonance. The treatment is based
on mul... | 1910.08545v1 |
2020-02-07 | Model of damping and anisotropy at elevated temperatures: application to granular FePt films | Understanding the damping mechanism in finite size systems and its dependence
on temperature is a critical step in the development of magnetic
nanotechnologies. In this work, nano-sized materials are modeled via atomistic
spin dynamics, the damping parameter being extracted from Ferromagnetic
Resonance (FMR) simulation... | 2002.02865v1 |
2020-04-06 | Damping-like Torque in Monolayer 1T-TaS$_2$ | A damping-like spin orbit torque (SOT) is a prerequisite for ultralow power
spin logic devices. Here, we report on the damping-like SOT in just one
monolayer of the conducting transition metal dichalcogenide (TMD) TaS$_2$
interfaced with a NiFe (Py) ferromagnetic layer. The charge-spin conversion
efficiency is found to... | 2004.02649v1 |
2020-05-15 | Calibration and performance of the neutron detector onboard of the DAMPE mission | The DArk Matter Particle Explorer (DAMPE), one of the four space-based
scientific missions within the framework of the Strategic Pioneer Program on
Space Science of the Chinese Academy of Sciences, has been successfully
launched on Dec. 17th 2015 from Jiuquan launch center. One of the most
important scientific goals of... | 2005.07828v1 |
2020-07-16 | Linearized wave-damping structure of Vlasov-Poisson in $\mathbb R^3$ | In this paper we study the linearized Vlasov-Poisson equation for localized
disturbances of an infinite, homogeneous Maxwellian background distribution in
$\mathbb R^3_x \times \mathbb R^3_v$. In contrast with the confined case
$\mathbb T^d _x \times \mathbb R_v ^d$, or the unconfined case $\mathbb R^d_x
\times \mathbb... | 2007.08580v1 |
2020-07-25 | Using a Lindbladian approach to model decoherence in two coupled nuclear spins via correlated phase-damping and amplitude damping noise channels | In this work, we studied the relaxation dynamics of coherences of different
order present in a system of two coupled nuclear spins. We used a previously
designed model for intrinsic noise present in such systems which considers the
Lindblad master equation for Markovian relaxation. We experimentally created
zero-, sing... | 2007.12972v1 |
2020-09-29 | The effects of nonlinear damping on degenerate parametric amplification | This paper considers the dynamic response of a single degree of freedom
system with nonlinear stiffness and nonlinear damping that is subjected to both
resonant direct excitation and resonant parametric excitation, with a general
phase between the two. This generalizes and expands on previous studies of
nonlinear effec... | 2009.14284v2 |
2020-11-10 | Damped oscillators within the general theory of Casimir and van der Waals forces | It is demonstrated that the general theory of Casimir and van der Waals
forces describes the interaction-induced equilibrium thermodynamic potentials
of the damped harmonic oscillator bilinearly coupled to the environment. An
extended model for a damped oscillator is suggested along the lines of the
general theory of C... | 2011.04960v2 |
2021-01-03 | The effect of flow on resonant absorption of slow MHD waves in magnetic flux tubes | In this paper, we study kink and sausage oscillations in the presence of
longitudinal background flow. We study resonant absorption of the kink and
sausage modes in the slow continuum under magnetic pore conditions in the
presence of flow. we determine the dispersion relation then solve it
numerically, and find the fre... | 2101.02064v1 |
2021-02-02 | Analysis of Lower Hybrid Drift Waves in Kappa Distributions over Solar Atmosphere | Kappa distributions and with loss cone features have been frequently observed
with flares emissions with the signatures of Lower hybrid waves. We have
analysed the plasma with Kappa distributions and with loss cone features for
the drift wave instabilities in perpendicular propagation for Large flare and
Normal flare a... | 2102.01323v1 |
2021-02-25 | Regularity and stability of the semigroup associated with some interacting elastic systems I: A degenerate damping case | In this paper, we examine regularity and stability issues for two damped
abstract elastic systems. The damping involves the average velocity and a
fractional power $\theta$, with $\theta$ in $[-1,1]$, of the principal
operator. The matrix operator defining the damping mechanism for the coupled
system is degenerate. Fir... | 2102.13217v4 |
2021-03-05 | Existence and congruence of global attractors for damped and forced integrable and nonintegrable discrete nonlinear Schrödinger equations | We study two damped and forced discrete nonlinear Schr\"odinger equations on
the one-dimensional infinite lattice. Without damping and forcing they are
represented by the integrable Ablowitz-Ladik equation (AL) featuring non-local
cubic nonlinear terms, and its standard (nonintegrable) counterpart with local
cubic nonl... | 2103.03533v1 |
2021-05-17 | Dissipation of Oscillation Energy and Distribution of Damping Power in a Multimachine Power System: A Small-signal Analysis | This paper revisits the concept of damping torque in a multimachine power
system and its relation to the dissipation of oscillation energy in synchronous
machine windings. As a multimachine extension of an existing result on a
single-machine-infinite-bus (SMIB) system, we show that the total damping power
for a mode st... | 2105.07618v2 |
2021-06-04 | Imaging spin-wave damping underneath metals using electron spins in diamond | Spin waves in magnetic insulators are low-damping signal carriers that could
enable a new generation of spintronic devices. The excitation, control, and
detection of spin waves by metal electrodes is crucial for interfacing these
devices to electrical circuits. It is therefore important to understand
metal-induced damp... | 2106.02508v2 |
2021-06-04 | Inherent Non-Linear Damping in Resonators with Inertia Amplification | Inertia amplification is a mechanism coupling degrees of freedom within a
vibrating structure. Its goal is to achieve an apparent high dynamic mass and,
accordingly, a low resonance frequency. Such structures have been described for
use in locally resonant metamaterials and phononic crystals to lower the
starting frequ... | 2106.02576v2 |
2021-06-30 | On the effect of perturbations in first-order optimization methods with inertia and Hessian driven damping | Second-order continuous-time dissipative dynamical systems with viscous and
Hessian driven damping have inspired effective first-order algorithms for
solving convex optimization problems. While preserving the fast convergence
properties of the Nesterov-type acceleration, the Hessian driven damping makes
it possible to ... | 2106.16159v2 |
2021-07-13 | A new approach to the quantization of the damped harmonic oscillator | In this paper, a new approach for constructing Lagrangians for driven and
undriven linearly damped systems is proposed, by introducing a redefined time
coordinate and an associated coordinate transformation to ensure that the
resulting Lagrangian satisfies the Helmholtz conditions. The approach is
applied to canonicall... | 2107.05827v3 |
2021-11-21 | Energy Transport in 1-Dimensional Oscillator Arrays With Hysteretic Damping | Energy transport in 1-dimensional oscillator arrays has been extensively
studied to date in the conservative case, as well as under weak viscous
damping. When driven at one end by a sinusoidal force, such arrays are known to
exhibit the phenomenon of supratransmission, i.e. a sudden energy surge above a
critical drivin... | 2111.10816v3 |
2021-12-15 | An Innovative Transverse Emittance Cooling Technique using a Laser-Plasma Wiggler | We propose an innovative beam cooling scheme based on laser driven plasma
wakefields to address the challenge of high luminosity generation for a future
linear collider. For linear colliders, beam cooling is realised by means of
damping rings equipped with wiggler magnets and accelerating cavities. This
scheme ensures ... | 2112.08163v1 |
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