publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
1995-09-22 | Damping rate of neutrinos in the singlet Majoron model | The damping rate and free path of neutrinos in the singlet Majoron model have
been calculated including both finite temperature and symmetry breaking
effects. The behaviour of right- and left-handed fermions are found inherently
different. While the damping rates of the left-handed leptons are essentially
model indepen... | 9509359v1 |
1996-09-25 | The hot baryon violation rate is $O(α_W^5 T^4)$ | The rate per unit volume for anomalous electroweak baryon number violation at
high temperatures, in the symmetric phase, has been estimated in the literature
to be $O(\alpha_W^4 T^4)$ based on simple scaling arguments. We argue that
damping effects in the plasma suppress the rate by an extra power of $\alpha_W$
to give... | 9609481v1 |
2001-03-29 | Phase transition dynamics in the hot Abelian Higgs model | We present a detailed numerical study of the equilibrium and non-equilibrium
dynamics of the phase transition in the finite-temperature Abelian Higgs model.
Our simulations use classical equations of motion both with and without
hard-thermal-loop corrections, which take into account the leading quantum
effects. From th... | 0103311v1 |
1996-04-12 | Onset of Rotational Damping in Superdeformed Nuclei | We discuss damping of the collective rotational motion in $A\sim 150$
superdeformed nuclei by means of a shell model combining the cranked Nilsson
mean-filed and the surface-delta two-body residual force. It is shown that,
because of the shell structure associated with the superdeformed mean-field,
onset energy of the ... | 9604015v1 |
2001-09-12 | The damping width of giant dipole resonances of cold and hot nuclei: a macroscopic model | A phenomenological macroscopic model of the Giant Dipole Resonance (GDR)
damping width of cold- and hot-nuclei with ground-state spherical and
near-spherical shapes is developed. The model is based on a generalized Fermi
Liquid model which takes into account the nuclear surface dynamics. The
temperature dependence of t... | 0109034v1 |
2006-01-31 | Small damping approach in Fermi-liquid theory | The validity of small damping approximation (SDA) for the quasi-classical
description of the averaged properties of nuclei at high temperatures is
studied within the framework of collisional kinetic theory. The isoscalar
collective quadrupole vibrations in hot nuclei are considered. We show that the
extension of the SD... | 0601094v1 |
2001-11-05 | Damping of transversal plasma-electron oscillations and waves in low-collision electron-ion plasmas | Previously developed method for finding asymptotic solutions of Vlasov
equations using two-dimensional (in coordinate x and time t) Laplace transform
is here applied to consider transversal oscillations and waves in low-collision
quasi-neutral (n_i \simeq n_e) Maxwellian electron-ion plasmas. We obtain two
branches of ... | 0111014v3 |
2002-03-13 | Enhanced radiative ion cooling | Enhanced radiative cooling of ion beams in storage rings and Robinson's
damping criterion are discussed. | 0203036v1 |
2003-05-24 | Impact of the Wiggler Coherent Synchrotron Radiation Impedance on the Beam Instability | Coherent Synchrotron Radiation (CSR) can play an important role by not only
increasing the energy spread and emittance of a beam, but also leading to a
potential instability. Previous studies of the CSR induced longitudinal
instability were carried out for the CSR impedance due to dipole magnets.
However, many storage ... | 0305107v1 |
2004-09-13 | Landau damping in thin films irradiated by a strong laser field | The rate of linear collisionless damping (Landau damping) in a classical
electron gas confined to a heated ionized thin film is calculated. The general
expression for the imaginary part of the dielectric tensor in terms of the
parameters of the single-particle self-consistent electron potential is
obtained. For the cas... | 0409062v1 |
1996-06-24 | Quantum damping of position due to energy measurements | Quantum theory for measurements of energy is introduced and its consequences
for the average position of monitored dynamical systems are analyzed. It turns
out that energy measurements lead to a localization of the expectation values
of other observables. This is manifested, in the case of position, as a damping
of the... | 9606024v1 |
2006-12-17 | Influence of a classical homogeneous gravitational field on dissipative dynamics of the Jaynes-Cummings model with phase damping | In this paper, we study the dissipative dynamics of the Jaynes-Cummings model
with phase damping in the presence of a classical homogeneous gravitational
field. The model consists of a moving two-level atom simultaneously exposed to
the gravitational field and a single-mode traveling radiation field in the
presence of ... | 0612143v2 |
2007-04-25 | Theory of weakly damped free-surface flows: a new formulation based on potential flow solutions | Several theories for weakly damped free-surface flows have been formulated.
In this paper we use the linear approximation to the Navier-Stokes equations to
derive a new set of equations for potential flow which include dissipation due
to viscosity. A viscous correction is added not only to the irrotational
pressure (Be... | 0704.3352v1 |
2007-05-25 | The Secular Evolution of a Close Ring-Satellite System: The Excitation of Spiral Bending Waves at a Nearby Gap Edge | The secular perturbations exerted by an inclined satellite orbiting in a gap
in a broad planetary ring tends to excite the inclinations of the nearby ring
particles, and the ring's self-gravity can allow that disturbance to propagate
away in the form of a spiral bending wave. The amplitude of this spiral bending
wave i... | 0705.3797v1 |
2007-06-15 | Anticorrelation between temperature and fluctuations in moderately damped Josephson junctions | We study the influence of dissipation on the switching current statistics of
moderately damped Josephson junctions. Different types of both low- and high-
$T_c$ junctions with controlled damping are studied. The damping parameter of
the junctions is tuned in a wide range by changing temperature, magnetic field,
gate vo... | 0706.2248v1 |
2007-08-06 | Collisionless damping of electron waves in non-Maxwellian plasma | In this paper we have criticized the so-called Landau damping theory. We have
analyzed solutions of the standard dispersion equations for longitudinal
(electric) and transversal (electromagnetic and electron) waves in
half-infinite slab of the uniform collisionless plasmas with non-Maxwellian and
Maxwellian-like electr... | 0708.0748v5 |
2007-08-14 | Preliminary Results on Vibration Damping Properties of Nanoscale-Reinforced Composite Materials | The focus in this paper is an analysis of existing state of the arts directed
toward the development of the next generation of vibration damping systems. The
research work concentrates on an investigation related to
nanoparticles/fibres/tubes-reinforced materials and coatings dynamic
characterization and modeling of th... | 0708.1821v1 |
2007-08-18 | Non-Riemannian geometrical asymmetrical damping stresses on the Lagrange instability of shear flows | It is shown that the physical interpretation of Elie Cartan three-dimensional
space torsion as couple asymmetric stress, has the effect of damping,
previously Riemannian unstable Couette planar shear flow, leading to stability
of the flow in the Lagrangean sense. Actually, since the flow speed is
inversely proportional... | 0708.2467v1 |
2007-12-07 | State transition of a non-Ohmic damping system in a corrugated plane | Anomalous transport of a particle subjected to non-Ohmic damping of the power
$\delta$ in a tilted periodic potential is investigated via Monte Carlo
simulation of generalized Langevin equation. It is found that the system
exhibits two relative motion modes: the locking state and the running state.
Under the surroundin... | 0712.1070v1 |
2007-12-25 | The damped Pinney equation and its applications to dissipative quantum mechanics | The work considers the damped Pinney equation, defined as the model arising
when a linear in velocity damping term is included in the Pinney equation. In
the general case the resulting equation does not admit Lie point symmetries or
is reducible to a simpler form by any obvious coordinate transformation. In
this contex... | 0712.4083v3 |
2008-01-01 | Non-linear equations for electron waves in Maxwellian low-collision ion-electron plasmas | The before described general principles and methodology of calculating
electron wave propagation in homogeneous isotropic half-infinity slab of
Maxwellian plasma with indefinite but in principal value sense taken integrals
in characteristic equations, and the use of 2D Laplace transform method are
applied to an evaluat... | 0801.0286v2 |
2008-02-22 | Radiative Damping and Functional Differential Equations | We propose a general technique to solve the classical many-body problem with
radiative damping. We modify the short-distance structure of Maxwell
electrodynamics. This allows us to avoid runaway solutions as if we had a
covariant model of extended particles. The resulting equations of motion are
functional differential... | 0802.3390v2 |
2008-04-24 | Analytic approximate seismology of transversely oscillating coronal loops | We present an analytic approximate seismic inversion scheme for damped
transverse coronal loop oscillations based on the thin tube and thin boundary
approximation for computing the period and the damping time. Asymptotic
expressions for the period and damping rate are used to illustrate the process
of seismological inv... | 0804.3877v1 |
2008-10-21 | On Wigner functions and a damped star product in dissipative phase-space quantum mechanics | Dito and Turrubiates recently introduced an interesting model of the
dissipative quantum mechanics of a damped harmonic oscillator in phase space.
Its key ingredient is a non-Hermitian deformation of the Moyal star product
with the damping constant as deformation parameter. We compare the
Dito-Turrubiates scheme with p... | 0810.3893v1 |
2009-01-08 | Grand-mother clocks and quiet lasers | Galileo noted in the 16th century that the period of oscillation of a
pendulum is almost independent of the amplitude. However, such a pendulum is
damped by air friction. The latter may be viewed as resulting from air
molecules getting in contact with the pendulum. It follows that air friction,
not only damps the oscil... | 0901.0983v1 |
2009-01-15 | Interaction of fast charged projectiles with two-dimensional electron gas: Interaction and disorder effects | The results of a theoretical investigation on the stopping power of ions
moving in a disordered two-dimensional degenerate electron gas are presented.
The stopping power for an ion is calculated employing linear response theory
using the dielectric function approach. The disorder, which leads to a damping
of plasmons a... | 0901.2249v1 |
2009-02-01 | Non-Markovian Analysis of the Phase Damped Jaynes-Cummings Model in the Presence of a Classical Homogeneous Gravitational Field | In this paper, the non-Markovian dissipative dynamics of the phase damped
Jaynes-Cummings model in the presence of a classical homogeneous gravitational
field will be analyzed. The model consists of a moving two-level atom
simultaneously exposed to the gravitational field and a single-mode traveling
radiation field in ... | 0902.0114v1 |
2009-05-04 | Models of Damped Oscillators in Quantum Mechanics | We consider several models of the damped oscillators in nonrelativistic
quantum mechanics in a framework of a general approach to the dynamics of the
time-dependent Schroedinger equation with variable quadratic Hamiltonians. The
Green functions are explicitly found in terms of elementary functions and the
corresponding... | 0905.0507v6 |
2009-05-28 | Resonant Nonlinear Damping of Quantized Spin Waves in Ferromagnetic Nanowires | We use spin torque ferromagnetic resonance to measure the spectral properties
of dipole-exchange spin waves in permalloy nanowires. Our measurements reveal
that geometric confinement has a profound effect on the damping of spin waves
in the nanowire geometry. The damping parameter of the lowest-energy quantized
spin wa... | 0905.4699v2 |
2009-06-01 | Effect of Decoherence in Ekert-Protocol | We have examined the effect of the decoherence in the Ekert91 quantum
cryptographic protocol. In order to explore this issue we have introduced two
major decoherences, the depolarizing channel and the generalized amplitude
damping, between the singlet source and one of the legitimate users. It is
shown that the depolar... | 0906.0233v1 |
2009-08-05 | Surface plasmon lifetime in metal nanoshells | The lifetime of localized surface plasmon plays an important role in many
aspects of plasmonics and its applications. In small metal nanostructures, the
dominant mechanism restricting plasmon lifetime is size-dependent Landau
damping. We performed quantum-mechanical calculations of Landau damping for the
bright surface... | 0908.0647v3 |
2009-08-12 | Coarse Grained Simulations of a Small Peptide: Effects of Finite Damping and Hydrodynamic Interactions | In the coarse grained Brownian Dynamics simulation method the many solvent
molecules are replaced by random thermal kicks and an effective friction acting
on the particles of interest. For Brownian Dynamics the friction has to be so
strong that the particles' velocities are damped much faster than the duration
of an in... | 0908.1685v1 |
2009-09-01 | Quantum Stackelberg duopoly in the presence of correlated noise | We study the influence of entanglement and correlated noise using correlated
amplitude damping, depolarizing and phase damping channels on the quantum
Stackelberg duopoly. Our investigations show that under the action of amplitude
damping channel a critical point exists for unentangled initial state as well,
at which f... | 0909.0063v2 |
2009-09-04 | Second sound dipole mode in a partially Bose-Einstein condensed gas | We study the second sound dipole mode in a partially Bose-Einstein condensed
gas. This mode is excited by spatially separating and releasing the
center-of-mass of the Bose-Einstein condensate (BEC) with respect to the
thermal cloud, after which the equilibration is observed. The oscillation
frequency and the damping ra... | 0909.0886v1 |
2009-12-30 | Finite dimensional attractor for a composite system of wave/plate equations with localised damping | The long-term behaviour of solutions to a model for acoustic-structure
interactions is addressed; the system is comprised of coupled semilinear wave
(3D) and plate equations with nonlinear damping and critical sources. The
questions of interest are: existence of a global attractor for the dynamics
generated by this com... | 0912.5464v2 |
2010-02-12 | Features of ion acoustic waves in collisional plasmas | The effects of friction on the ion acoustic (IA) wave in fully and partially
ionized plasmas are studied. In a quasi-neutral electron-ion plasma the
friction between the two species cancels out exactly and the wave propagates
without any damping. If the Poisson equation is used instead of the
quasi-neutrality, however,... | 1002.2502v1 |
2010-02-18 | Damping mechanisms for oscillations in solar prominences | Small amplitude oscillations are a commonly observed feature in
prominences/filaments. These oscillations appear to be of local nature, are
associated to the fine structure of prominence plasmas, and simultaneous flows
and counterflows are also present. The existing observational evidence reveals
that small amplitude o... | 1002.3489v2 |
2010-03-07 | Theory of plasmon decay in dense plasmas and warm dense matter | The decay of the Langmuir waves in dense plasmas is not accurately predicted
by the prevalent Landau damping theory. A dielectric function theory is
introduced, predicting much higher damping than the Landau damping theory. This
strong damping is in better agreement with the experimentally observed data in
metals. It i... | 1003.1523v2 |
2010-04-12 | Dissipative Transport of a Bose-Einstein Condensate | We investigate the effects of impurities, either correlated disorder or a
single Gaussian defect, on the collective dipole motion of a Bose-Einstein
condensate of $^7$Li in an optical trap. We find that this motion is damped at
a rate dependent on the impurity strength, condensate center-of-mass velocity,
and interatom... | 1004.1891v2 |
2010-05-23 | Constraining phases of quark matter with studies of r-mode damping in neutron stars | The r-mode instability in rotating compact stars is used to constrain the
phase of matter at high density. The color-flavor-locked phase with kaon
condensation (CFL-K0) and without (CFL) is considered in the temperature range
10^8K < T <10^{11} K. While the bulk viscosity in either phase is only
effective at damping th... | 1005.4161v1 |
2010-07-07 | Observational evidence of resonantly damped propagating kink waves in the solar corona | In this Letter we establish clear evidence for the resonant absorption
damping mechanism by analyzing observational data from the novel Coronal
Multi-Channel Polarimeter (CoMP). This instrument has established that in the
solar corona there are ubiquitous propagating low amplitude ($\approx$1 km
s$^{-1}$) Alfv\'{e}nic ... | 1007.1080v1 |
2010-07-12 | Variable damping and coherence in a high-density magnon gas | We report on the fast relaxation behavior of a high-density magnon gas
created by a parametric amplification process. The magnon gas is probed using
the technique of spin-wave packet recovery by parallel parametric pumping.
Experimental results show a damping behavior which is in disagreement with both
the standard mod... | 1007.1895v3 |
2010-07-21 | A low-power circuit for piezoelectric vibration control by synchronized switching on voltage sources | In the paper, a vibration damping system powered by harvested energy with
implementation of the so-called SSDV (synchronized switch damping on voltage
source) technique is designed and investigated. In the semi-passive approach,
the piezoelectric element is intermittently switched from open-circuit to
specific impedanc... | 1007.3596v1 |
2010-10-24 | Long-time dynamics in plate models with strong nonlinear damping | We study long-time dynamics of a class of abstract second order in time
evolution equations in a Hilbert space with the damping term depending both on
displacement and velocity. This damping represents the nonlinear strong
dissipation phenomenon perturbed with relatively compact terms. Our main result
states the existe... | 1010.4991v1 |
2010-11-05 | Effects of Turbulence, Eccentricity Damping, and Migration Rate on the Capture of Planets into Mean Motion Resonance | Pairs of migrating extrasolar planets often lock into mean motion resonance
as they drift inward. This paper studies the convergent migration of giant
planets (driven by a circumstellar disk) and determines the probability that
they are captured into mean motion resonance. The probability that such planets
enter resona... | 1011.1486v1 |
2010-11-21 | Quasi-normal frequencies: Semi-analytic results for highly damped modes | Black hole highly-damped quasi-normal frequencies (QNFs) are very often of
the form (offset)} + i n (gap). We have investigated the genericity of this
phenomenon for the Schwarzschild--deSitter (SdS) black hole by considering a
model potential that is piecewise Eckart (piecewise Poeschl-Teller), and
developing an analy... | 1011.4634v1 |
2011-03-08 | Application of Explicit Symplectic Algorithms to Integration of Damping Oscillators | In this paper an approach is outlined. With this approach some explicit
algorithms can be applied to solve the initial value problem of $n-$dimensional
damped oscillators. This approach is based upon following structure: for any
non-conservative classical mechanical system and arbitrary initial conditions,
there exists... | 1103.1455v1 |
2011-03-09 | Nonlinear damping in mechanical resonators based on graphene and carbon nanotubes | Carbon nanotubes and graphene allow fabricating outstanding nanomechanical
resonators. They hold promise for various scientific and technological
applications, including sensing of mass, force, and charge, as well as the
study of quantum phenomena at the mesoscopic scale. Here, we have discovered
that the dynamics of n... | 1103.1788v1 |
2011-05-03 | Entanglement in a Bipartite Gaussian State | To examine the loss of entanglement in a two-particle Gaussian system, we
couple it to an environment and use the Non-Rotating Wave master equation to
study the system's dynamics. We also present a derivation of this equation. We
consider two different types of evolution. Under free evolution we find that
entanglement ... | 1105.0564v1 |
2011-06-15 | Plasma damping effects on the radiative energy loss of relativistic particles | The energy loss of a relativistic charge undergoing multiple scatterings
while traversing an infinite, polarizable and absorptive plasma is
investigated. Polarization and damping mechanisms in the medium are
phenomenologically modelled by a complex index of refraction. Apart from the
known Ter-Mikaelian effect related ... | 1106.2856v3 |
2011-09-12 | Reduction of compressibility and parallel transfer by Landau damping in turbulent magnetized plasmas | Three-dimensional numerical simulations of decaying turbulence in a
magnetized plasma are performed using a so-called FLR-Landau fluid model which
incorporates linear Landau damping and finite Larmor radius (FLR) corrections.
It is shown that compared to simulations of compressible Hall-MHD, linear
Landau damping is re... | 1109.2636v1 |
2011-09-24 | Existence of weak solutions for the generalized Navier-Stokes equations with damping | In this work we consider the generalized Navier-Stoke equations with the
presence of a damping term in the momentum equation. % The problem studied here
derives from the set of equations which govern the isothermal flow of
incompressible, homogeneous and non-Newtonian fluids. % For the generalized
Navier-Stokes problem... | 1109.5217v1 |
2011-11-14 | New Electrodynamics of Pulsars | We have recently proposed that Force-Free Electrodynamics (FFE) does not
apply to pulsars -- pulsars should be described by the high-conductivity limit
of Strong-Field Electrodynamics (SFE), which predicts an order-unity damping of
the Poynting flux, while FFE postulates zero damping. The strong damping result
has not ... | 1111.3377v1 |
2011-12-20 | Dynamics of DNA breathing in the Peyrard-Bishop model with damping and external force | The impact of damping effect and external forces to the DNA breathing is
investigated within the Peyrard-Bishop model. In in the continuum limit, the
dynamics of the breathing of DNA is described by the forced-damped nonlinear
Schrodinger equation and studied by means of variational method. The analytical
solutions are... | 1112.4715v1 |
2012-02-22 | Radiation Damping in the Photoionization of Fe^{14+} | A theoretical investigation of photoabsorption and photoionization of
Fe^{14+} extending beyond an earlier frame transformation R-matrix
implementation is performed using a fully-correlated, Breit-Pauli R-matrix
formulation including both fine-structure splitting of strongly-bound
resonances and radiation damping. The ... | 1202.4800v1 |
2012-02-29 | Present status of development of damping ring extraction kicker system for CLIC | The CLIC damping rings will produce ultra-low emittance beam, with high bunch
charge, necessary for the luminosity performance of the collider. To limit the
beam emittance blow-up due to oscillations, the pulse power modulators for the
damping ring kickers must provide extremely flat, high-voltage pulses:
specification... | 1202.6527v1 |
2012-04-03 | Inhomogeneity of the phase space of the damped harmonic oscillator under Levy noise | The damped harmonic oscillator under symmetric L\'{e}vy white noise shows
inhomogeneous phase space, which is in contrast to the homogeneous one of the
same oscillator under the Gaussian white noise, as shown in a recent paper [I.
M. Sokolov, W. Ebeling, and B. Dybiec, Phys. Rev. E \textbf{83}, 041118
(2011)]. The inho... | 1204.0593v2 |
2012-06-20 | Metadamping: An emergent phenomenon in dissipative metamaterials | We theoretically demonstrate the concept of metadamping in dissipative
metamaterials. We consider an infinite mass-spring chain with repeated local
resonators and a statically equivalent periodic chain whose wave propagation
characteristics are based on Bragg scattering. For each system we introduce
identical viscous d... | 1206.4577v2 |
2012-07-12 | Spin Damping in an RF Atomic Magnetometer | Under negative feedback, the quality factor Q of a radio-frequency
magnetometer can be decreased by more than two orders of magnitude, so that any
initial perturbation of the polarized spin system can be rapidly damped,
preparing the magnetometer for detection of the desired signal. We find that
noise is also suppresse... | 1207.2842v1 |
2012-08-27 | The properties of non-thermal X-ray filaments in young supernova remnants | Context. Young supernova remnants (SNRs) exhibit narrow filaments of
non-thermal X-ray emission whose widths can be limited either by electron
energy losses or damping of the magnetic field. Aims. We want to investigate
whether or not different models of these filaments can be observationally
tested. Methods. Using obs... | 1208.5322v1 |
2012-09-10 | Mid-infrared plasmons in scaled graphene nanostructures | Plasmonics takes advantage of the collective response of electrons to
electromagnetic waves, enabling dramatic scaling of optical devices beyond the
diffraction limit. Here, we demonstrate the mid-infrared (4 to 15 microns)
plasmons in deeply scaled graphene nanostructures down to 50 nm, more than 100
times smaller tha... | 1209.1984v1 |
2012-11-05 | No asymptotically highly damped quasi-normal modes without horizons? | We explore the question of what happens with the asymptotically highly damped
quasi-normal modes ($\ell$ fixed, $|\omega_{I}|\to\infty$) when the underlying
spacetime has no event horizons. We consider the characteristic oscillations of
a scalar field in a large class of asymptotically flat spherically symmetric
static... | 1211.1046v2 |
2012-11-21 | Chaotic saddles in nonlinear modulational interactions in a plasma | A nonlinear model of modulational processes in the subsonic regime involving
a linearly unstable wave and two linearly damped waves with different damping
rates in a plasma is studied numerically. We compute the maximum Lyapunov
exponent as a function of the damping rates in a two-parameter space, and
identify shrimp-s... | 1211.5070v1 |
2012-12-18 | Thermal activation at moderate-to-high and high damping: finite barrier effects and force spectroscopy | We study the thermal escape problem in the moderate-to-high and high damping
regime of a system with a parabolic barrier. We present a formula that matches
our numerical results accounting for finite barrier effects, and compare it
with previous works. We also show results for the full damping range. We
quantitatively ... | 1212.4290v2 |
2013-01-18 | Interfacial roughening in non-ideal fluids: Dynamic scaling in the weak- and strong-damping regime | Interfacial roughening denotes the nonequilibrium process by which an
initially flat interface reaches its equilibrium state, characterized by the
presence of thermally excited capillary waves. Roughening of fluid interfaces
has been first analyzed by Flekkoy and Rothman [Phys. Rev. Lett. 75, 260
(1995)], where the dyn... | 1301.4468v2 |
2013-02-02 | Achieving the Quantum Ground State of a Mechanical Oscillator using a Bose-Einstein Condensate with Back-Action and Cold Damping feedback schemes | We present a detailed study to show the possibility of approaching the
quantum ground-state of a hybrid optomechanical quantum device formed by a
Bose-Einstein condensate (BEC) confined inside a high-finesse optical cavity
with an oscillatory end mirror. Cooling is achieved using two experimentally
realizable schemes: ... | 1302.0339v1 |
2013-02-27 | Resonantly damped oscillations of elliptically shaped stratified emerging coronal loops | The effects of both elliptical shape and stage of emergence of the coronal
loop on the resonant absorption of standing kink oscillations are studied. To
do so, a typical coronal loop is modeled as a zero-beta longitudinally
stratified cylindrical magnetic flux tube. We developed the connection formulae
for the resonant... | 1302.6884v1 |
2013-02-28 | Damping of Quantum Vibrations Revealed in Deep Sub-barrier Fusion | We demonstrate that when two colliding nuclei approach each other, their
quantum vibrations are damped near the touching point. We show that this
damping is responsible for the fusion hindrance phenomena measured in the deep
sub-barrier fusion reactions. To show those, we for the first time apply the
random-phase-appro... | 1302.7115v2 |
2013-03-14 | Microwave-assisted switching of a nanomagnet: analytical determination of the optimal microwave field | We analytically determine the optimal microwave field that allows for the
magnetization reversal of a nanomagnet modeled as a macrospin. This is done by
minimizing the total injected energy. The results are in good agreement with
the fields obtained numerically using the optimal control theory. For typical
values of th... | 1303.3501v4 |
2013-04-05 | Nonlocal Gravity: Damping of Linearized Gravitational Waves | In nonlocal general relativity, linearized gravitational waves are damped as
they propagate from the source to the receiver in the Minkowski vacuum.
Nonlocal gravity is a generalization of Einstein's theory of gravitation in
which nonlocality is due to the gravitational memory of past events. That
nonlocal gravity is d... | 1304.1769v1 |
2013-07-29 | Damping of Primordial Gravitational Waves from Generalized Sources | It has been shown that a cosmological background with an anisotropic stress
tensor, appropriate for a free streaming thermal neutrino background, can damp
primordial gravitational waves after they enter the horizon, and can thus
affect the CMB B-mode polarization signature due to such tensor modes. Here we
generalize t... | 1307.7571v1 |
2013-08-08 | Small global solutions to the damped two-dimensional Boussinesq equations | The two-dimensional (2D) incompressible Euler equations have been thoroughly
investigated and the resolution of the global (in time) existence and
uniqueness issue is currently in a satisfactory status. In contrast, the global
regularity problem concerning the 2D inviscid Boussinesq equations remains
widely open. In an... | 1308.1723v1 |
2013-08-21 | Approximate quantum error correction for generalized amplitude damping errors | We present analytic estimates of the performances of various approximate
quantum error correction schemes for the generalized amplitude damping (GAD)
qubit channel. Specifically, we consider both stabilizer and nonadditive
quantum codes. The performance of such error-correcting schemes is quantified
by means of the ent... | 1308.4582v2 |
2013-11-01 | Kinetic theory of acoustic-like modes in nonextensive pair plasmas | The low-frequency acoustic-like modes in a pair plasma (electron-positron or
pair-ion) is studied by employing a kinetic theory model based on the Vlasov
and Poisson's equation with emphasizing the Tsallis's nonextensive statistics.
The possibility of the acoustic-like modes and their properties in both fully
symmetric... | 1311.0193v1 |
2013-11-29 | Exploring viscous damping in undergraduate Physics laboratory using electromagnetically coupled oscillators | We design a low-cost, electromagnetically coupled, simple harmonic oscillator
and demonstrate free, damped and forced oscillations in an under-graduate (UG)
Physics laboratory. It consists of a spring-magnet system that can oscillate
inside a cylinder around which copper coils are wound. Such demonstrations can
complim... | 1311.7489v1 |
2013-12-18 | Radiative damping and synchronization in a graphene-based terahertz emitter | We investigate the collective electron dynamics in a recently proposed
graphene-based terahertz emitter under the influence of the radiative damping
effect, which is included self-consistently in a molecular dynamics approach.
We show that under appropriate conditions synchronization of the dynamics of
single electrons... | 1312.5193v1 |
2014-01-20 | Analysis of mean cluster size in directed compact percolation near a damp wall | We investigate the behaviour of the mean size of directed compact percolation
clusters near a damp wall in the low-density region, where sites in the bulk
are wet (occupied) with probability $p$ while sites on the wall are wet with
probability $p_w$. Methods used to find the exact solution for the dry case
($p_w=0$) an... | 1401.4793v1 |
2014-02-13 | On the Convergence of Approximate Message Passing with Arbitrary Matrices | Approximate message passing (AMP) methods and their variants have attracted
considerable recent attention for the problem of estimating a random vector
$\mathbf{x}$ observed through a linear transform $\mathbf{A}$. In the case of
large i.i.d. zero-mean Gaussian $\mathbf{A}$, the methods exhibit fast
convergence with pr... | 1402.3210v3 |
2014-03-28 | Strichartz estimates and smooth attractors for a sub-quintic wave equation with fractional damping in bounded domains | The work is devoted to Dirichlet problem for sub-quintic semi-linear wave
equation with damping damping term of the form $(-\Delta)^\alpha\partial_t u$,
$\alpha\in(0,\frac{1}{2})$, in bounded smooth domains of $\Bbb R^3$. It appears
that to prove well-posedness and develop smooth attractor theory for the
problem we nee... | 1403.7476v1 |
2014-05-12 | Global Existence and Nonlinear Diffusion of Classical Solutions to Non-Isentropic Euler Equations with Damping in Bounded Domain | We considered classical solutions to the initial boundary value problem for
non-isentropic compressible Euler equations with damping in multi-dimensions.
We obtained global a priori estimates and global existence results of classical
solutions to both non-isentropic Euler equations with damping and their
nonlinear diff... | 1405.2842v3 |
2014-05-16 | Damping of Confined Modes in a Ferromagnetic Thin Insulating Film: Angular Momentum Transfer Across a Nanoscale Field-defined Interface | We observe a dependence of the damping of a confined mode of precessing
ferromagnetic magnetization on the size of the mode. The micron-scale mode is
created within an extended, unpatterned YIG film by means of the intense local
dipolar field of a micromagnetic tip. We find that damping of the confined mode
scales like... | 1405.4203v2 |
2014-06-03 | Persistently damped transport on a network of circles | In this paper we address the exponential stability of a system of transport
equations with intermittent damping on a network of $N \geq 2$ circles
intersecting at a single point $O$. The $N$ equations are coupled through a
linear mixing of their values at $O$, described by a matrix $M$. The activity
of the intermittent... | 1406.0731v4 |
2014-06-06 | Damping of quasiparticles in a Bose-Einstein condensate coupled to an optical cavity | We present a general theory for calculating the damping rate of elementary
density wave excitations in a Bose-Einstein condensate strongly coupled to a
single radiation field mode of an optical cavity. Thereby we give a detailed
derivation of the huge resonant enhancement in the Beliaev damping of a density
wave mode, ... | 1406.1669v1 |
2014-08-18 | Kirchhoff equations with strong damping | We consider Kirchhoff equations with strong damping, namely with a friction
term which depends on a power of the "elastic" operator. We address local and
global existence of solutions in two different regimes depending on the
exponent in the friction term.
When the exponent is greater than 1/2, the dissipation prevai... | 1408.3908v1 |
2014-08-28 | A convergent method for linear half-space kinetic equations | We give a unified proof for the well-posedness of a class of linear
half-space equations with general incoming data and construct a Galerkin method
to numerically resolve this type of equations in a systematic way. Our main
strategy in both analysis and numerics includes three steps: adding damping
terms to the origina... | 1408.6630v4 |
2014-09-02 | Damping effects in hole-doped graphene: the relaxation-time approximation | The dynamical conductivity of interacting multiband electronic systems
derived in Ref.[1] is shown to be consistent with the general form of the Ward
identity. Using the semiphenomenological form of this conductivity formula, we
have demonstrated that the relaxation-time approximation can be used to
describe the dampin... | 1409.0621v1 |
2014-11-13 | Maximal correlation between flavor entanglement and oscillation damping due to localization effects | Localization effects and quantum decoherence driven by the mass-eigenstate
wave packet propagation are shown to support a statistical correlation between
quantum entanglement and damped oscillations in the scenario of three-flavor
quantum mixing for neutrinos. Once the mass-eigenstates that support flavor
oscillations ... | 1411.3634v1 |
2015-01-20 | Damping of long wavelength collective modes in spinor Bose-Fermi mixtures | Using an effective field theory we describe the low energy bosonic
excitations in a three dimensional ultra-cold mixture of spin-1 bosons and
spin-1/2 fermions. We establish an interesting fermionic excitation induced
generic damping of the usual undamped long wavelength bosonic collective
Goldstone modes. Two states w... | 1501.05015v2 |
2015-01-27 | Non-linear fluctuation effects in dynamics of freely suspended film | Long-scale dynamic fluctuation phenomena in freely suspended films is
analyzed. We consider isotropic films that, say, can be pulled from bulk
smectic A liquid crystals. The key feature of such objects is possibility of
bending deformations of the film. The bending (also known as flexular) mode
turns out to be anomalou... | 1501.06703v1 |
2015-01-30 | Intrinsic Damping of Collective Spin Modes in a Two-Dimensional Fermi Liquid with Spin-Orbit Coupling | A Fermi liquid with spin-orbit coupling (SOC) is expected to support a new
kind of collective modes: oscillations of magnetization in the absence of the
magnetic field. We show that these modes are damped by the electron-electron
interaction even in the limit of an infinitely long wavelength (q = 0). The
linewidth of t... | 1502.00027v1 |
2015-02-01 | Nonlocal Damping of Helimagnets in One-Dimensional Interacting Electron Systems | We investigate the magnetization relaxation of a one-dimensional helimagnetic
system coupled to interacting itinerant electrons. The relaxation is assumed to
result from the emission of plasmons, the elementary excitations of the
one-dimensional interacting electron system, caused by slow changes of the
magnetization p... | 1502.00268v2 |
2015-07-21 | Onboard Calibration Circuit for the Front-end Electronics of DAMPE BGO Calorimeter | An onboard calibration circuit has been designed for the front-end
electronics (FEE) of DAMPE BGO Calorimeter. It is mainly composed of a 12 bit
DAC, an operation amplifier and an analog switch. Test results showed that a
dynamic range of 0 ~ 30 pC with a precision of 5 fC was achieved, which meets
the requirements of ... | 1507.05862v1 |
2015-07-30 | Reservoir interactions during Bose-Einstein condensation: modified critical scaling in the Kibble-Zurek mechanism of defect formation | As a test of the Kibble-Zurek mechanism (KZM) of defect formation, we
simulate the Bose-Einstein condensation transition in a toroidally confined
Bose gas using the stochastic projected Gross-Pitaevskii equation (SPGPE), with
and without the energy-damping reservoir interaction. Energy-damping alters the
scaling of the... | 1507.08357v1 |
2015-08-23 | Melnikov chaos in a modified Rayleigh-Duffing oscillator with $ φ^6$ potential | The chaotic behavior of the modified Rayleigh-Duffing oscillator with $
\phi^6$ potential and external excitation which modeles ship rolling motions
are investigated both analytically and numerically. Melnikov method is applied
and the conditions for the existence of homoclinic and heteroclinic chaos are
obtained. The ... | 1508.05664v1 |
2015-09-23 | Quantum Error-Correcting Codes for Qudit Amplitude Damping | Traditional quantum error-correcting codes are designed for the depolarizing
channel modeled by generalized Pauli errors occurring with equal probability.
Amplitude damping channels model, in general, the decay process of a multilevel
atom or energy dissipation of a bosonic system at zero temperature. We discuss
quantu... | 1509.06829v1 |
2015-10-09 | Determining form and data assimilation algorithm for weakly damped and driven Korteweg-de Vries equaton- Fourier modes case | We show that the global attractor of a weakly damped and driven Korteweg-de
Vries equation (KdV) is embedded in the long-time dynamics of an ordinary
differential equation called a determining form. In particular, there is a
one-to-one identification of the trajectories in the global attractor of the
damped and driven ... | 1510.02730v1 |
2015-10-27 | Remarks on 1-D Euler Equations with Time-Decayed Damping | We study the 1-d isentropic Euler equations with time-decayed damping
\begin{equation} \left\{ \begin{aligned} &\partial_t \rho+\partial_x(\rho u)=0,
\\ &\partial_t(\rho u)+ \partial_x(\rho
u^2)+\partial_xp(\rho)=-\frac{\mu}{1+t}\rho u,\\
&\rho|_{t=0}=1+\varepsilon\rho_0(x),u|_{t=0}=\varepsilon u_0(x). \end{aligned}
\r... | 1510.08115v1 |
2016-01-04 | Generalized Bloch's theorem for viscous metamaterials: Dispersion and effective properties based on frequencies and wavenumbers that are simultaneously complex | It is common for dispersion curves of damped periodic materials to be based
on real frequencies versus complex wavenumbers or, conversely, real wavenumbers
versus complex frequencies. The former condition corresponds to harmonic wave
motion where a driving frequency is prescribed and where attenuation due to
dissipatio... | 1601.00683v1 |
2016-02-05 | Protecting entanglement from correlated amplitude damping channel using weak measurement and quantum measurement reversal | Based on the quantum technique of weak measurement, we propose a scheme to
protect the entanglement from correlated amplitude damping decoherence. In
contrast to the results of memoryless amplitude damping channel, we show that
the memory effects play a significant role in the suppression of entanglement
sudden death a... | 1602.01998v1 |
2016-03-10 | Stability Analysis of Networked Systems Containing Damped and Undamped Nodes | This paper answers the question if a qualitatively heterogeneous passive
networked system containing damped and undamped nodes shows consensus in the
output of the nodes in the long run. While a standard Lyapunov analysis shows
that the damped nodes will always converge to a steady-state value, the
convergence of the u... | 1603.03477v1 |
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