publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2019-01-24 | Rapid falling of an orbiting moon to its parent planet due to tidal-seismic resonance | Tidal force plays an important role in the evolution of the planet-moon
system. The tidal force of a moon can excite seismic waves in the planet it is
orbiting. A tidal-seismic resonance is expected when a tidal force frequency
matches a free-oscillation frequency of the planet. Here we show that when the
moon is close... | 1901.08561v1 |
2019-04-18 | On spurious solutions encountered in Helmholtz scattering resonance computations in R^d with applications to nano-photonics and acoustics | In this paper, we consider a sorting scheme for potentially spurious
scattering resonant pairs in one- and two-dimensional electromagnetic problems
and in three-dimensional acoustic problems. The novel sorting scheme is based
on a Lippmann-Schwinger type of volume integral equation and can, therefore, be
applied to str... | 1904.08812v3 |
2019-04-20 | Hybridization-induced resonances with high quality factor in a plasmonic concentric ring-disk nanocavity | Plasmonic resonators have drawn more attention due to the ability to confine
light into subwavelength scale. However, they always suffer from a low quality
(Q) factor owing to the intrinsic loss of metal. Here, we numerically propose a
plasmonic resonator with ultra-high Q factor based on plasmonic
metal-insulator-meta... | 1904.09437v1 |
2019-08-12 | Triple-Poles Complementary Split Ring Resonator for Sensing Diabetics Glucose Levels at cm-Band | Microwave sensors are very promising for sensing the blood glucose levels
non-invasively for their non-ionizing nature, miniaturized sizing, and low
health risks for diabetics. All these features offer the possibility for
realizing a portable non-invasive glucose sensor for monitoring glucose levels
in real time. In th... | 1908.07407v1 |
2019-12-10 | AlN Combined Overtone Resonators for the 5G mmWave Spectrum | This work presents a new acoustic MEMS resonator technology, dubbed Aluminum
Nitride (AlN) Combined Overtone Resonator (COR), capable of addressing the
filter requirements for the 5G mmWave spectrum in the 6-40GHz range. The COR
exploits the multimodal excitation of two higher-order Lamb waves (2nd and 3rd
order Asymme... | 1912.04515v1 |
2020-01-14 | Experimental realization of optimal energy storage in resonators embedded in scattering media | The ability to enhance light-matter interactions by increasing the energy
stored in optical resonators is inherently dependent on their coupling to the
incident wavefront. In practice, weak coupling may result from resonators'
irregular shapes and/or the scrambling of waves in the surrounding scattering
environment. He... | 2001.04658v1 |
2020-10-23 | Resonances in hyperbolic dynamics | The study of wave propagation outside bounded obstacles uncovers the
existence of resonances for the Laplace operator, which are complex-valued
generalized eigenvalues, relevant to estimate the long time asymptotics of the
wave. In order to understand distribution of these resonances at high
frequency, we employ semicl... | 2010.12385v1 |
2022-05-18 | Graviton to Photon Conversion via Parametric Resonance | We study the parametric resonance excitation of the electromagnetic field by
a gravitational wave. We show that there is narrow band resonance. For an
electromagnetic field in the vacuum the resonance occurs only in the second
band, and its strength is thus suppressed by two powers of amplitude of the
gravitational wav... | 2205.08767v3 |
2022-10-15 | Elastic Wave Scattering off a Single and Double Array of Periodic Defects | Elastic waves scattering off a periodic single and double array of thin
cylindrical defects is considered for isotropic materials. An analytical
expression for the scattering matrix is obtained by means of the
Lippmann-Schwinger formalism and analyzed in the long wavelength limit using
Schloemilch series in order to ob... | 2210.08177v1 |
2022-11-12 | Broadband Four-Wave Mixing Enhanced by Plasmonic Surface Lattice Resonance and Localized Surface Plasmon Resonance in an Azimuthally Chirped Grating | Plasmonic enhancement of nonlinear light-matter interaction can be achieved
via dedicated optimization of resonant plasmonic modes that are spectrally
matched to the different wavelengths involved in the particular nonlinear
optical process. In this work, we investigate the generation and enhancement of
broadband four-... | 2211.06647v1 |
2022-12-05 | Explanation of Y(4630) as hadronic resonant state | After Y(4630) is discovered, theorists have given various explanations. We
find that if Y(4630) is interpreted as the D-wave resonant state of $\Lambda_c
\bar {\Lambda}_c$ system, the particle mass, decay width and all quantum
numbers are consistent with experimental observations. We use the Bonn
approximation to get t... | 2212.02218v1 |
2023-04-05 | Multiphoton resonance band and Bloch-Siegert shift in a bichromatically driven qubit | We study the resonance and dynamics of a qubit exposed to a strong aperiodic
bichromatic field by using a periodic counter-rotating hybridized rotating wave
(CHRW) Hamiltonian, which is derived from the original Hamiltonian with the
unitary transformations under a reasonable approximation and enables the
application of... | 2304.02676v1 |
2023-05-03 | $Σ$ Resonances from a Neural Network-based Partial Wave Analysis on $K^-p$ Scattering | We implement a convolutional neural network to study the $\Sigma$ hyperons
using experimental data of the $K^-p\to\pi^0\Lambda$ reaction. The averaged
accuracy of the NN models in resolving resonances on the test data sets is
${\rm 98.5\%}$, ${\rm 94.8\%}$ and ${\rm 82.5\%}$ for one-, two- and
three-additional-resonanc... | 2305.01852v1 |
2023-06-30 | Controlling photons by phonons via giant atom in a waveguide QED setup | We investigate the single photon scattering in a phonon-photon hybrid system
in the waveguide QED scheme. In our consideration, an artificial giant atom,
which is dressed by the phonons in a surface acoustic wave resonator, interacts
with a coupled resonator waveguide (CRW) nonlocally via two connecting sites.
Together... | 2306.17444v1 |
2023-09-06 | Millimeter Wave Thin-Film Bulk Acoustic Resonator in Sputtered Scandium Aluminum Nitride | This work reports a millimeter wave (mmWave) thin-film bulk acoustic
resonator (FBAR) in sputtered scandium aluminum nitride (ScAlN). This paper
identifies challenges of frequency scaling sputtered ScAlN into mmWave and
proposes a stack and new fabrication procedure with a sputtered Sc0.3Al0.7N on
Al on Si carrier wafe... | 2309.03135v1 |
2023-11-09 | 38.7 GHz Thin Film Lithium Niobate Acoustic Filter | In this work, a 38.7 GHz acoustic wave ladder filter exhibiting insertion
loss (IL) of 5.63 dB and 3-dB fractional bandwidth (FBW) of 17.6% is
demonstrated, pushing the frequency limits of thin-film piezoelectric acoustic
filter technology. The filter achieves operating frequency up to 5G millimeter
wave (mmWave) frequ... | 2311.05712v1 |
2023-11-28 | Gravitational Wave Detection and Low-Noise Sapphire Oscillators | This thesis describes the development of an ultra-low noise sapphire
resonator oscillator that is tunable over X-band. While undertaking this task
the author has explained some interesting and very useful phenomena in regards
to the design and understanding of multi-mode resonant cavities and
oscillators. The oscillato... | 2311.16426v1 |
2004-06-13 | Condensation, excitation, pairing, and superfluid density in high-$T_{c}$ superconductors: magnetic resonance mode as a roton analogue and a possible spin-mediated pairing | To find out a primary determing factor of $T_{c}$ and a pairing mechanism in
high-$T_{c}$ cuprates, we combine the muon spin relaxation results on
$n_{s}/m^{*}$ (superconducting carrier density / effective mass), accumulated
over the last 15 years, with the results from neutron and Raman scattering,
STM, specific heat,... | 0406301v1 |
2011-07-01 | Local Runup Amplification By Resonant Wave Interactions | Until now the analysis of long wave runup on a plane beach has been focused
on finding its maximum value, failing to capture the existence of resonant
regimes. One-dimensional numerical simulations in the framework of the
Nonlinear Shallow Water Equations (NSWE) are used to investigate the Boundary
Value Problem (BVP) ... | 1107.0304v2 |
2021-02-05 | The role of resonant plasma instabilities in the evolution of blazar induced pair beams | The fate of relativistic pair beams produced in the intergalactic medium by
very high energy emission from blazars remains controversial in the literature.
The possible role of resonance beam plasma instability has been studied both
analytically and numerically but no consensus has been reached. In this paper,
we thoro... | 2102.03190v1 |
2019-07-25 | Experimental study of the non-linear saturation of the elliptical instability: inertial wave turbulence versus geostrophic turbulence | In this paper, we present an experimental investigation of the turbulent
saturation of the flow driven by parametric resonance of inertial waves in a
rotating fluid. In our set-up, a half-meter wide ellipsoid filled with water is
brought to solid body rotation, and then undergoes sustained harmonic
modulation of its ro... | 1907.10907v3 |
2023-07-01 | Existence and Instability of Standing Wave for the Two-wave Model with Quadratic Interaction | In this paper, we establish the existence and instability of standing wave
for a system of nonlinear Schr\"{o}dinger equations arising in the two-wave
model with quadratic interaction in higher space dimensions under mass
resonance conditions. Here, we eliminate the limitation for the relationship
between complex const... | 2307.00242v1 |
2024-03-05 | Soliton Frequency Combs in Elastomer Membrane-Cavity Optomechanics | Solitons, arising from nonlinear wave-matter interactions, stand out for
their intrinsic stability during wave propagation and exceptional spectral
characteristics. Their applications span diverse physical systems, including
telecommunications, atomic clocks, and precise measurements. In recent years,
significant strid... | 2403.03160v2 |
2011-11-14 | Importance of including small body spin effects in the modelling of intermediate mass-ratio inspirals. II Accurate parameter extraction of strong sources using higher-order spin effects | We improve the numerical kludge waveform model introduced in [1] in two ways.
We extend the equations of motion for spinning black hole binaries derived by
Saijo et al. [2] using spin-orbit and spin-spin couplings taken from
perturbative and post-Newtonian (PN) calculations at the highest order
available. We also inclu... | 1111.3243v3 |
2012-11-05 | Tides in rotating barotropic fluid bodies: the contribution of inertial waves and the role of internal structure | We discuss the linear response to low-frequency tidal forcing of fluid bodies
that are slowly and uniformly rotating, are neutrally stratified and may
contain a solid or fluid core. This problem may be regarded as a simplified
model of astrophysical tides in convective regions of stars and giant planets.
The response c... | 1211.0837v1 |
2015-04-24 | Signatures of indirect K-edge resonant inelastic x-ray scattering on magnetic excitations in triangular lattice antiferromagnet | We compute the K-edge indirect resonant inelastic x-ray scattering (RIXS)
spectrum of a triangular lattice antiferromagnet in its ordered coplanar 3-
sublattice 120 degree magnetic state. By considering the first order
self$-$energy corrections to the spin wave spectrum, magnon decay rate,
bimagnon interactions within ... | 1504.06609v1 |
2022-02-28 | Differential cross sections and photon beam asymmetries of $η$ photoproduction on the proton at $E_γ$ = 1.3-2.4 GeV | We have carried out exclusive measurements for the photoproduction of an
$\eta$ meson from a proton target with an egg-shaped calorimeter made of BGO
crystals (BGOegg) and forward charged-particle detectors at the SPring-8 LEPS2
beamline. The differential cross sections and photon beam asymmetries of the
$\gamma p \to ... | 2202.13688v1 |
2014-04-18 | Hydrodynamic and kinetic models for spin-1/2 electron-positron quantum plasmas: Annihilation interaction, helicity conservation, and wave dispersion in magnetized plasmas | We discuss complete theory of spin-1/2 electron-positron quantum plasmas,
when electrons and positrons move with velocities mach smaller than the speed
of light. We derive a set of two fluid quantum hydrodynamic equations
consisting of the continuity, Euler, spin (magnetic moment) evolution equations
for each species. ... | 1404.4899v1 |
2014-11-19 | Variational Monte Carlo Method in the Presence of Spin-Orbit Interaction and Its Application to the Kitaev and Kitaev-Heisenberg Model | We propose an accurate variational Monte Carlo method applicable in the
presence of the strong spin-orbit interaction. Our variational wave functions
consist of generalized Pfaffian-Slater wave functions that involve mixtures of
singlet and triplet Cooper pairs, Jastrow-Gutzwiller-type pro- jections, and
quantum number... | 1411.5198v2 |
2018-06-21 | Flat Bands, Indirect Gaps, and Unconventional Spin-Wave Behavior Induced by a Periodic Dzyaloshinskii-Moriya Interaction | Periodically patterned metamaterials are known for exhibiting wave properties
similar to the ones observed in electronic band structures in crystal lattices.
In particular, periodic ferromagnetic materials are characterized by the
presence of bands and bandgaps in their spin-wave spectrum at tunable GHz
frequencies. Re... | 1806.08333v2 |
2014-06-23 | Role of electron-phonon interaction in a magnetically driven mechanism for superconductivity | We use the renormalization group method to examine the effect of phonon
mediated interaction on d-wave superconductivity, as driven by spin
fluctuations in a quasi-one-dimensional electron system. The influence of a
tight-binding electron-phonon interaction on the spin-density-wave and d-wave
superconducting instabilit... | 1406.6086v2 |
2023-06-28 | Suppression of the spin waves nonreciprocity due to interfacial Dzyaloshinskii Moriya interaction by lateral confinement in magnetic nanostructures | Despite the huge recent interest towards chiral magnetism related to the
interfacial Dzyaloshinskii Moriya interaction (iDMI) in layered systems, there
is a lack of experimental data on the effect of iDMI on the spin waves
eigenmodes of laterally confined nanostructures. Here we exploit Brillouin
Light Scattering (BLS)... | 2306.16310v1 |
2024-03-20 | All-magnonic repeater based on bistability | Bistability, a universal phenomenon found in diverse fields such as biology,
chemistry, and physics, describes a scenario in which a system has two stable
equilibrium states and resets to one of the two states. The ability to switch
between these two states is the basis for a wide range of applications,
particularly in... | 2403.13276v1 |
2011-08-15 | Search for Narrow Nucleon Resonance in $γp\to ηp$ | Results of a partial wave analysis of new high-statistics data on $\gamma
p\to p\eta$ from MAMI are presented. A fit using known broad resonances and
only standard background amplitudes can not describe the relatively narrow
peaking structure in the cross section in the mass region of 1660-1750 MeV
which follows a mini... | 1108.3010v2 |
2013-04-13 | Universality in s-wave and higher partial wave Feshbach resonances: an illustration with a single atom near two scattering centers | It is well-known that cold atoms near s-wave Feshbach resonances have
universal properties that are insensitive to the short-range details of the
interaction. What is less known is that atoms near higher partial wave Feshbach
resonances also have remarkable universal properties. We illustrate this with a
single atom in... | 1304.3791v2 |
2015-03-24 | A mathematical study of meteo and landslide tsunamis : The Proudman resonance | In this paper, we want to understand the Proudman resonance. It is a resonant
respond in shallow waters of a water body on a traveling atmospheric
disturbance when the speed of the disturbance is close to the typical water
wave velocity. We show here that the same kind of resonance exists for
landslide tsunamis and we ... | 1503.07028v2 |
2016-02-22 | Microwave dynamics of high aspect ratio superconducting nanowires studied using self-resonance | We study the microwave impedance of extremely high aspect ratio (length/width
~ 5,000) superconducting niobium nitride nanowires. The nanowires are
fabricated in a compact meander geometry that is in series with the center
conductor of a 50 ohm coplanar waveguide transmission line. The transmission
coefficient of the s... | 1602.06895v3 |
2017-11-27 | Recent Results on Light-Meson Spectroscopy from COMPASS | The main goal of the spectroscopy program at COMPASS is to explore the
light-meson spectrum below about $2\,\text{GeV}/c^2$ in diffractive production.
Our flagship channel is the decay into three charged pions: $p + \pi^-\to
\pi^-\pi^-\pi^+ + p_\text{recoil}$, for which COMPASS has acquired the so far
world's largest d... | 1711.09782v2 |
2019-07-23 | Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and an electromagnetic wave | The actual theoretical research investigates the resonant spontaneous
bremsstrahlung (RSB) of ultrarelativistic electrons under the condition of
scattering on a nucleus in the field of a weak electromagnetic wave. The
progression of the functional mechanism indicates the transformation of the
intermediate virtual elect... | 1907.10431v1 |
2023-02-06 | Heterogeneous integration of superconducting thin films and epitaxial semiconductor heterostructures with Lithium Niobate | We report on scalable heterointegration of superconducting electrodes and
epitaxial semiconductor quantum dots on strong piezoelectric and optically
nonlinear lithium niobate. The implemented processes combine the
sputter-deposited thin film superconductor niobium nitride and III-V compound
semiconductor membranes onto... | 2302.02712v2 |
1998-12-08 | MHD waves as a source of matter density fluctuations within solar interior | It is shown that in the presence of a background magnetic field within solar
interior a cavity for low frequency MHD eigen modes (with periods 1-10 days)
near equatorial plane can arise. The lower boundary of the cavity coincides
with the centre of the Sun while the upper one corresponds to the Alfven
resonant layer wh... | 9812149v2 |
2006-03-17 | Turbulence and particle acceleration in collisionless supernovae remnant shocks: I-Anisotropic spectra solutions | This paper investigates the nature of the MHD turbulence excited by the
streaming of accelerated cosmic rays in a shock wave precursor. The two
recognised regimes (non-resonant and resonant) of the streaming instability are
taken into account. We show that the non-resonant instability is very efficient
and saturates th... | 0603461v1 |
2000-08-04 | Stability of the Ground State of a Harmonic Oscillator in a Monochromatic Wave | Classical and quantum dynamics of a harmonic oscillator in a monochromatic
wave is studied in the exact resonance and near resonance cases. This model
describes, in particular, a dynamics of a cold ion trapped in a linear ion trap
and interacting with two lasers fields with close frequencies. Analytically and
numerical... | 0008005v2 |
2008-11-28 | The Effect of Random Surface Inhomogeneities on Microresonator Spectral Properties: Theory and Modeling at Millimeter Wave Range | The influence of random surface inhomogeneities on spectral properties of
open microresonators is studied both theoretically and experimentally. To solve
the equations governing the dynamics of electromagnetic fields the method of
eigen-mode separation is applied previously developed with reference to
inhomogeneous sys... | 0811.4734v1 |
2012-10-03 | Revisiting 1-Dimensional Double-Barrier Tunneling in Quantum Mechanics | This paper revisited quantum tunneling dynamics through a square
double-barrier potential. We emphasized the similarity of tunneling dynamics
through double-barrier and that of optical Fabry--P$\acute{e}$rot (FP)
interferometer. Based on this similarity, we showed that the well-known
resonant tunneling can also be inte... | 1210.0970v2 |
2014-11-01 | Extraordinary focusing of sound above a soda can array without time reversal | Recently, Lemoult et al. [Phys. Rev. Lett. 107, 064301 (2011)] used time
reversal to focus sound above an array of soda cans into a spot much smaller
than the acoustic wavelength in air. In this study, we show that equally sharp
focusing can be achieved without time reversal, by arranging transducers around
a nearly ci... | 1411.1016v2 |
2017-12-27 | Resonant parametric interference effect in spontaneous bremsstrahlung of an electron in the field of a nucleus and two pulsed laser waves | Resonant spontaneous bremsstrahlung of an electron scattered by a nucleus in
the field of two moderately strong pulsed laser waves is studied theoretically.
The process is studied in detail within the interference kinematic region. This
region is determined by scattering of particles in the same plane at
predetermined ... | 1712.09525v1 |
2018-05-24 | Effective medium description of the resonant elastic-wave response at the periodically-uneven boundary of a half-space | A periodically-uneven (in one horizontal direction) stress-free boundary
covering a linear, isotropic, homogeneous, lossless solid half space is
submitted to a vertically-propagating shear-horizontal plane, body wave. The
rigorous theory of this elastodynamic scattering problem is given and the means
by which it can be... | 1805.09823v1 |
2018-10-26 | Birkhoff normal form and long time existence for periodic gravity water waves | We consider the gravity water waves system with a periodic one-dimensional
interface in infinite depth, and prove a rigorous reduction of these equations
to Birkhoff normal form up to degree four. This proves a conjecture of
Zakharov-Dyachenko [55] suggested by the formal Birkhoff integrability of the
water waves Hamil... | 1810.11549v2 |
2014-06-25 | Surface acoustic wave driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers | Interdigitated transducers were used to generate and detect surface acoustic
waves on a thin layer of (Ga,Mn)(As,P). The out-of-plane uniaxial magnetic
anisotropy of this dilute magnetic semiconductor is very sensitive to the
strain of the layer, making it an ideal test material for the dynamic control
of magnetization... | 1406.6483v1 |
2020-09-23 | Quantum frequency conversion based on resonant four-wave mixing | Quantum frequency conversion (QFC), a critical technology in photonic quantum
information science, requires that the quantum characteristics of the
frequency-converted photon must be the same as the input photon except for the
color. In nonlinear optics, the wave mixing effect far away from the resonance
condition is o... | 2009.11021v2 |
2021-04-05 | Two-body wave functions and compositeness from scattering amplitudes: II. Application to the physical $N ^{\ast}$ and $Δ^{\ast}$ resonances | The meson-baryon molecular components for the $N^{\ast}$ and $\Delta ^{\ast}$
resonances are investigated in terms of the compositeness, which is defined as
the norm of the two-body wave function from the meson-baryon scattering
amplitudes. The scattering amplitudes are constructed in a $\pi N$-$\eta
N$-$\sigma N$-$\rh... | 2104.01962v2 |
2022-07-28 | Quasi-resonant diffusion of wave packets in one-dimensional disordered mosaic lattices | We investigate numerically the time evolution of wave packets incident on
one-dimensional semi-infinite lattices with mosaic modulated random on-site
potentials, which are characterized by the integer-valued modulation period
$\kappa$ and the disorder strength $W$. For Gaussian wave packets with the
central energy $E_0... | 2207.13906v2 |
2000-01-08 | Gravitational Waves from Low-Mass X-ray Binaries: a Status Report | We summarize the observations of the spin periods of rapidly accreting
neutron stars. If gravitational radiation is responsible for balancing the
accretion torque at the observed spin frequencies of ~300 Hz, then the
brightest of these systems make excellent gravitational wave sources for
LIGO-II and beyond. We review ... | 0001129v1 |
2000-07-19 | Scattering of Dirac Waves off Kerr Black Holes | Chandrasekhar separated the Dirac equation for spinning and massive particles
in Kerr geometry into radial and angular parts. Here we solve the complete wave
equation and find out how the Dirac wave scatters off Kerr black holes. The
eigenfunctions, eigenvalues and reflection and transmission co-efficients are
computed... | 0007277v1 |
2000-05-16 | Coexistent States of Charge Density Wave and Spin Density Wave in One-Dimensional Systems with the Inter-site Coulomb Interaction under the Electron Filling Control | The coexistent state of the spin density wave (SDW) and the charge density
wave (CDW) in the one-dimensional systems is studied by the mean field
approximation at T=0 in various electron-filling cases. We find that the
coexistent state of SDW and CDW is stabilized when the on-site and the
inter-site Coulomb interaction... | 0005256v1 |
2003-10-31 | Conversion of dislocation oscillation waves to spin ones in the vicinity of OPT temperatures | Dislocation waves in magnetic crystals in the vicinity of orientation phase
transition (OPT) temperatures are considered in a frame of the field theory of
the defects. The singularities of the dislocation flows, elastic deformations
and magnetization occur if the magnetic subsystem is inhomogeneous and the
dispersion o... | 0310762v1 |
2003-11-12 | Hartree-Fock energy of a density wave in a spin polarized two-dimensional electron gas | We calculate the Hartree-Fock energy of a density-wave in a spin polarized
two-dimensional electron gas using a short-range repulsive interaction. We find
that the stable ground state for a short-range potential is always either the
paramagnetic state or the uniform ferromagnetic state. The energy of a
density-wave sta... | 0311292v1 |
2005-02-25 | Triplet superconducting pairing and density-wave instabilities in organic conductors | Using a renormalization group approach, we determine the phase diagram of an
extended quasi-one-dimensional electron gas model that includes interchain
hopping, nesting deviations and both intrachain and interchain repulsive
interactions. We find a close proximity of spin-density- and
charge-density-wave phases, single... | 0502614v2 |
2003-02-12 | Detectability of Gravitational Waves from SN 1987A | We discuss the potential for detection of gravitational waves from a rapidly
spinning neutron star produced by supernova 1987A taking the parameters claimed
by Middleditch et al. (2000) at face value. Asssuming that the dominant
mechanism for spin down is gravitational waves emitted by a freely precessing
neutron star,... | 0302050v1 |
1997-06-20 | Time development of a wave packet and the time delay | A one-dimensional scattering problem off a $\delta$-shaped potential is
solved analytically and the time development of a wave packet is derived from
the time-dependent Schr\"odinger equation. The exact and explicit expression of
the scattered wave packet supplies us with interesting information about the
"time delay" ... | 9706048v1 |
2009-08-29 | Cavity-Mediated Strong Matter Wave Bistability in a Spin-1 Condensate | We study matter wave bistability in a spin-1 Bose-Einstein condensate
dispersively coupled to a unidirectional ring cavity. A unique feature is that
the population exchange among different modes of matter fields are accomplished
via the spin-exchange collisions. We show that the interplay between the atomic
spin mixing... | 0908.4333v1 |
2011-02-02 | Skyrmion-antiSkyrmion pairs in Ultracold Atomic Gases | We study theoretically the dynamics of two-component Bose-Einstein
condensates in two dimensions, which admit topological excitations related to
the Skyrmions of nuclear physics. We show that there exists a branch of
uniformly propagating solitary waves characterised by a conserved momentum.
These excitations exhibit a... | 1102.0340v1 |
2014-05-15 | Radiative corrections to the Coulomb law and model of dense quantum plasmas: Dispersion of waves in magnetized quantum plasmas | Two kinds of the quantum electrodynamic radiative corrections to
electromagnetic interaction and their influence on properties of highly dense
quantum plasmas are considered. Linear radiative correction to the Coulomb
interaction are considered. Its contribution in the spectrum of the Langmuir
waves is presented. The s... | 1405.3914v1 |
2018-11-06 | Parametrically squeezed states of microwave magnons in yttrium iron garnet films | We demonstrate theoretically, and confirm experimentally, that nonlinear spin
waves excited in thin yttrium iron garnet films are good candidates for
squeezing vacuum quantum noise. The experimental demonstration is in the form
of a measurement of spin-wave induced modulation instability (IMI) conducted in
the classica... | 1811.02104v1 |
2018-07-17 | A Luneburg lens for spin waves | We report on the theory of a Luneburg lens for forward-volume magnetostatic
spin waves, and verify its operation via micromagnetic modelling. The lens
converts a plane wave to a point source (and vice versa) by a designed graded
index, realised here by either modulating the thickness or the saturation
magnetization in ... | 1807.06705v1 |
2019-02-18 | The quantum theory and topological features of photon | In this paper, we have proposed the spinor wave equation of free and non-free
photon. On this basis, we given the spin operators and spin wave functions of
photon, and calculated the wave function of photon in vacuum and medium. In
addition, we have given the quantum Berry phase and Chern number with the
photon wave fu... | 1902.06596v1 |
2021-03-03 | The studies on phonons and magnons in (Ni80Fe20/Au/Co/Au) multilayers of different number of repetitions | In Ni80Fe20/Au/Co/Au deposited on silicon substrate the interaction between
spin waves and surface acoustic waves is observed by Brillion light scattering
spectroscopy. We show that by changing the number of receptions in the
multilayer we can tune the dispersion of surface acoustic waves (SAWs) not
affecting significa... | 2103.02686v2 |
2023-03-06 | Leaky Wave Antenna by Spin Photonic Topological Insulators Using 30-degree rhombic unit cell | A new spin photonic topological insulator model with a 30-degree rhombic unit
cell is presented and analyzed. Topological band gaps and the robustness
against the defects are shown. The edge modes are studied via full-wave
simulation of a ribbon of unit cells. By using the structure in the fast wave
region, a leaky wav... | 2303.07117v2 |
1994-08-19 | Spin dynamics of the doped t-J model | We present a new method for studying the low energy excitations in finite
cluster systems and apply it to clarify the nature of the low energy spin
excitations in the moderately doped t-J model.
We find that the character of the low energy spin excitations changes within
the Brillouin zone, with the dominant excitati... | 9408057v1 |
1995-05-26 | A Spin Model for Investigating Chirality | Spin chirality has generated great interest recently both from possible
applications to flux phases and intrinsically, as an example of a several-site
magnetic order parameter that can be long-ranged even where simpler order
parameters are not. Previous work (motivated by the flux phases) has focused on
antiferromagnet... | 9505143v1 |
1997-07-15 | Alternating spin chains with singlet ground states | We investigate low-energy properties of the alternating spin chain model
composed of spin $s_1$ and $s_2$ with a singlet ground state. After examining
the spin-wave spectrum in detail, we map low-energy spin excitations to the
O(3) non-linear sigma model in order to take into account quantum fluctuations.
Analyzing the... | 9707148v1 |
1998-10-30 | Two-Dimensional Quantum Spin Systems with Ladder and Plaquette Structure | We investigate low-energy properties of two-dimensional quantum spin systems
with the ladder and plaquette structures, which are described by a generalized
antiferromagnetic Heisenberg model with both of the bond and spin alternations.
By exploiting a non-linear $\sigma$ model technique and a modified spin wave
approac... | 9810414v1 |
1999-05-19 | Oscillation modes of two-dimensional nanostructures within the time-dependent local-spin-density approximation | We apply the time-dependent local-spin-density approximation as general
theory to describe ground states and spin-density oscillations in the linear
response regime of two-dimensional nanostructures of arbitrary shape. For this
purpose, a frequency analysis of the simulated real-time evolution is
performed. The effect ... | 9905288v2 |
1999-07-23 | Spin relaxation in semiconductor quantum dots | We have studied the physical processes responsible for the spin -flip in GaAs
quantum dots. We have calculated the rates for different mechanisms which are
related to spin-orbit coupling and cause a spin-flip during the inelastic
relaxation of the electron in the dot both with and without a magnetic field.
We have show... | 9907367v1 |
2001-08-01 | Order from disorder: Quantum spin gap in magnon spectra of LaTiO_3 | A theory of the anisotropic superexchange and low energy spin excitations in
a Mott insulator with t_{2g} orbital degeneracy is presented. We observe that
the spin-orbit coupling induces frustrating Ising-like anisotropy terms in the
spin Hamiltonian, which invalidate noninteracting spin wave theory. The
frustration of... | 0108016v2 |
2001-08-11 | Spin dynamics from time-dependent spin density-functional theory | We derive the spin-wave dynamics of a magnetic material from the
time-dependent spin density functional theory in the linear response regime.
The equation of motion for the magnetization includes, besides the static spin
stiffness, a "Berry curvature" correction and a damping term. A gradient
expansion scheme based on ... | 0108193v1 |
2003-05-19 | Spin-phonon interaction and band effects in the high-T_C superconductor HgBa_2CuO_4 | Band calculations show that a stripe-like anti-ferromagnetic spin wave is
enforced by a 'half-breathing' phonon distortion within the CuO plane of
HgBa_2CuO_4. This spin-phonon coupling is increased further by shear distortion
and by increased distance between Cu and apical oxygens. The effects from
spin-phonon couplin... | 0305438v1 |
2003-06-23 | Normal-superfluid interaction dynamics in a spinor Bose gas | Coherent behavior of spinor Bose-Einstein condensates is studied in the
presence of a significant uncondensed (normal) component. Normal-superfluid
exchange scattering leads to a near-perfect local alignment between the spin
fields of the two components. Through this spin locking, spin-domain formation
in the condensat... | 0306584v1 |
2003-07-01 | Spin clustering and ferromagnetic couplings in a dilute magnetic semiconductor | Ferromagnetic couplings in spin clusters are shown to be strongly enhanced
compared to those for an ordered impurity arrangement, even for the same spin
separation and hole doping. The consequent energy-enhancement of the
cluster-localized spin-wave modes indicates a potentially significant role of
positional Mn disord... | 0307009v1 |
2003-11-05 | Spin nematics in the bilinear-biquadratic S=1 spin chain | We report the existence of an extended critical, nondimerized region in the
phase diagram of the bilinear-biquadratic spin-one chain. The dominant power
law correlations are ferroquadrupolar, i.e. spin nematic in character. Another
known critical region is also characterized by dominant quadrupolar
correlations, althou... | 0311082v1 |
2004-10-01 | Spin interferometry with electrons in nanostructures: A road to spintronic devices | The wave nature of electrons in semiconductor nanostructures results in
spatial interference effects similar to those exhibited by coherent light. The
presence of spin-orbit coupling renders interference in spin space and in real
space interdependent, making it possible to manipulate the electron's spin
state by addres... | 0410008v1 |
2004-10-29 | How many electrons are needed to flip a local spin? | Considering the spin of a local magnetic atom as a quantum mechanical
operator, we illustrate the dynamics of a local spin interacting with a
ballistic electron represented by a wave packet. This approach improves the
semi-classical approximation and provides a complete quantum mechanical
understanding for spin transfe... | 0410775v1 |
2005-08-30 | Effects of spin current on ferromagnets | When a spin-polarized current flows through a ferromagnet, the local
magnetization receives a spin torque. Two consequences of this spin torque are
studied. First, the uniformly magnetized ferromagnet becomes unstable if a
sufficiently large current is applied. The characteristics of the instability
include spin wave g... | 0508735v1 |
2006-08-28 | Inverse Spin Hall Effect by Spin Injection | Motivated by a recent experiment[Nature {\bf 442}, 176 (2006)], we present a
quantitative microscopic theory to investigate the inverse spin-Hall effect
with spin injection into aluminum considering both intrinsic and extrinsic
spin-orbit couplings using the orthogonalized-plane-wave method. Our
theoretical results are... | 0608594v2 |
2001-01-03 | Collision of spinning black holes in the close limit | In this paper we consider the collision of spinning holes using first order
perturbation theory of black holes (Teukolsky formalism). With these results
(along with ones, we published in the past) one can predict the properties of
the gravitational waves radiated from the late stage inspiral of two spinning,
equal mass... | 0101015v1 |
2000-07-06 | Spin Structure of Many-Body Systems with Two-Body Random Interactions | We investigate the spin structure of many-fermion systems with a
spin-conserving two-body random interaction. We find a strong dominance of
spin-0 ground states and considerable correlations between energies and wave
functions of low-lying states with different spin, but no indication of
pairing. The spectral densities... | 0007013v1 |
2003-09-19 | Spatial Localization and Relativistic Transformation of Quantum Spins | The purity of a reduced state for spins that is pure in the rest frame will
most likely appear to degrade because spin and momentum become mixed when
viewed by a moving observer. We show that such a boost-induced decrease in spin
purity observed in a moving reference frame is intrinsically related to the
spatial locali... | 0309144v2 |
2004-06-02 | Entanglement of electron spins in superconductors | We investigate entanglement of two electron spins forming Cooper pairs in an
s-wave superconductor. The two-electron space-spin density matrix is obtained
from the BCS ground state using a two-particle Green's function. It is
demonstrated that a two spin state is not given by a spin singlet state but by
a Werner state.... | 0406013v1 |
2007-05-29 | Parametric spin excitations in lateral quantum dots | In this work, the spin dynamics of a single electron under parametric
modulation of a lateral quantum dot's electrostatic potential in the presence
of spin-orbit coupling is investigated. Numerical and theoretical calculations
demonstrate that, by squeezing and/or moving the electron's wave function, spin
rotations wit... | 0705.4231v2 |
2007-10-16 | Influences of an impurity on the transport properties of one-dimensional antisymmetric spin filter | The influences of an impurity on the spin and the charge transport of
one-dimensional antisymmetric spin filter are investigated using bosonization
and Keldysh formulation and the results are highlighted against those of
spinful Luttinger liquids. Due to the dependence of the electron spin
orientation on wave number th... | 0710.3088v1 |
2008-05-09 | Spin dynamics in (III,Mn)V ferromagnetic semiconductors: the role of correlations | We address the role of correlations between spin and charge degrees of
freedom on the dynamical properties of ferromagnetic systems governed by the
magnetic exchange interaction between itinerant and localized spins. For this
we introduce a general theory that treats quantum fluctuations beyond the
Random Phase Approxi... | 0805.1320v2 |
2009-05-15 | Spin polarization of half-quantum vortex in systems with equal spin pairing | We present a variational analysis for a half-quantum vortex (HQV) in the
equal-spin-pairing superfluid state which, under suitable conditions, is
believed to be realized in Sr2RuO4 and 3He-A. Our approach is based on a
description of the HQV in terms of a BCS-like wave function with a
spin-dependent boost. We predict a... | 0905.2631v1 |
2009-10-30 | Gravitational waveforms from unequal-mass binaries with arbitrary spins under leading order spin-orbit coupling | The paper generalizes the structure of gravitational waves from orbiting
spinning binaries under leading order spin-orbit coupling, as given in the work
by K\"onigsd\"orffer and Gopakumar [PRD 71, 024039 (2005)] for single-spin and
equal-mass binaries, to unequal-mass binaries and arbitrary spin
configurations. The orb... | 0910.5931v2 |
2010-03-22 | Dynamical central peak and spinon deconfinement in frustrated spin chains | Studying the dynamical spin structure factor in frustrated spin chains with
spontaneously dimerized ground state we show that besides the gapped spin-wave
excitations there appears at finite temperatures also a sharp central peak. The
latter can be attributed to deconfined spinons, accounted well within the
variational... | 1003.4232v1 |
2010-05-24 | Application of entanglement conditions to spin systems | There have been numerous studies of entanglement in spin systems. These have
usually focussed on examining the entanglement between individual spins or
determining whether the state of the system is completely separable. Here we
present conditions that allow us to determine whether blocks of spins are
entangled. We sho... | 1005.4448v1 |
2013-03-07 | Thickness dependence of the degree of spin polarization of the electrical current in permalloy thin films | Spin-polarized electrical transport is investigated in $
Al_{2}O_{3}/Ni_{80}Fe_{20}/Al_{2}O_{3}$ thin films for permalloy thickness
between 6 and 20nm. The degree of spin-polarization of the current flowing in
the plane of the film is measured through the current induced spin wave Doppler
shift. We find that it decreas... | 1303.1692v1 |
2013-08-26 | Ferromagnetic spin-orbital liquid of dipolar fermions in zigzag lattices | Two-component dipolar fermions in zigzag optical lattices allow for the
engineering of spin-orbital models. We show that dipolar lattice fermions
permit the exploration of a regime typically unavailable in solid-state
compounds that is characterized by a novel spin-liquid phase with a finite
magnetization and spontaneo... | 1308.5519v1 |
2013-09-02 | Proposal for a local heating driven spin current generator | We propose a two-terminal spin-orbit interferometer with a hot molecule
inserted in one of its arms to generate pure spin currents. Local heating is
achieved by coupling the vibrational modes of the molecule to a third
(phononic) reservoir. We show that this spin calorimetric effect is due to the
combined influence of ... | 1309.0366v1 |
2021-04-05 | Thermal Hall Effect of Chiral Spin Fluctuations | Using a two-dimensional square lattice Heisenberg model with a Rashba-type
Dzyaloshinskii-Moriya interaction, we demonstrate that chiral spin fluctuations
can give rise to a thermal Hall effect in the absence of any static spin
texture or momentum space topology. It is shown by means of Monte Carlo and
stochastic spin ... | 2104.02168v1 |
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