publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2015-05-06 | Multiple quasi-phase matched resonant radiations induced by modulation instability in dispersion oscillating fibers | The propagation of a continuous wave in the average anomalous dispersion
region of a dispersion oscillating fiber is investigated numerically and
experimentally. We demonstrate that the train of solitons arising from
modulation instability is strongly affected by the periodic variations of the
fiber dispersion. This le... | 1505.01256v1 |
2015-07-09 | Modification by pion exchange of near threshold resonance line shape in open heavy flavor channel | The effect of the pion exchange on the line shape of near threshold
bottomoniumlike resonances decaying into an $S$ wave pair of $B^{(*)}$ mesons
is considered. It is pointed out that this effect, parametrically enhanced by
the heavy meson mass, can be of a practical significance in determining the
parameters of the bo... | 1507.02639v1 |
2015-12-02 | Resonant Anderson localization in segmented wires | We discuss a model of random segmented wire, with linear segments of 2D wires
joined by circular bends. The joining vertices act as scatterers on the
propagating electron waves. The model leads to resonant Anderson localization
when all segments are of similar length. The resonant behavior is present with
one and also ... | 1512.00680v1 |
2016-08-31 | Controlling mode competition by tailoring the spatial pump distribution in a laser: A resonance-based approach | We introduce a simplified version of the steady-state ab initio laser theory
for calculating the effects of mode competition in continuous wave lasers using
the passive cavity resonances. This new theory harnesses widely available
numerical methods that can efficiently calculate the passive cavity resonances,
with negl... | 1608.08985v1 |
2016-10-19 | Localization, quantum resonances and ratchet acceleration in a periodically-kicked $\mathcal{PT}$-symmetric quantum rotator | We consider wave transport phenomena in a $\mathcal{PT}$-symmetric extension
of the periodically-kicked quantum rotator model and reveal that dynamical
localization assists the unbroken $\mathcal{PT}$ phase. In the delocalized
(quantum resonance) regime, $\mathcal{PT}$ symmetry is always in the broken
phase and ratchet... | 1610.06007v1 |
2018-03-17 | 500MHz resonant photodetector for high-quantum-effciency, low-noise homodyne measurement | We design and demonstrate a resonant-type differential photodetector for
low-noise quantum homodyne measurement at 500MHz optical sideband with 17MHz of
bandwidth. By using a microwave monolithic amplifier and a discrete voltage
buffer circuit, a low-noise voltage amplifier is realized and applied to our
detector. 12dB... | 1803.06462v2 |
2018-09-03 | State resolved investigation of Förster resonant energy transfer in collisions between polar molecules and Rydberg atoms | We perform a comprehensive investigation of F\"orster resonant energy
transfer in a room-temperature thermal mixture of ammonia molecules and
rubidium Rydberg atoms. Fully state-resolved measurement of the Rydberg-atom
populations is achieved by combining millimeter-wave state transfer with
state-selective field ioniza... | 1809.00624v1 |
2017-05-02 | Wavelength conversion of data at gigabit rates via nonlinear optics in an integrated micro-ring resonator | We present the first system penalty measurements for all-optical wavelength
conversion in an integrated ring resonator. We achieve wavelength conversion
over a range of 27.7nm in the C-band at 2.5 Gb/s by exploiting four wave mixing
in a CMOS compatible, high index glass ring resonator at ~22 dBm average pump
power, ob... | 1705.00778v1 |
2014-06-03 | Frequency combs from crystalline resonators: influence of cavity parameters on comb dynamics | We experimentally study the factors that influence the span in frequency
combs derived from the crystalline whispering gallery mode resonators. We
observe that cavity dispersion plays an important role in generation of combs
by cascaded four wave mixing process. We observed combs from the resonators
with anomalous disp... | 1406.0790v1 |
2018-02-15 | Direct Measurement of Coating Thermal Noise in Optical Resonators | The best measurements of space and time currently possible (e.g.
gravitational wave detectors and optical reference cavities) rely on optical
resonators, and are ultimately limited by thermally induced fluctuations in the
reflective coatings which form the resonator. We present measurements of
coating thermal noise in ... | 1802.05372v2 |
2018-12-30 | Nonlinear Coupling of Linearly Uncoupled Resonators | We demonstrate a system composed of two resonators that are coupled solely
through a nonlinear interaction, and where the linear properties of each
resonator can be controlled locally. We show that this class of dynamical
systems has peculiar properties with important consequences for the study of
classical and quantum... | 1812.11484v1 |
2016-12-03 | Ultralight scalars and resonances in black-hole physics | Ultralight degrees of freedom coupled to matter lead to resonances, which can
be excited when the Compton wavelength of the field equals a dynamical scale in
the problem. For binaries composed of a star orbiting a supermassive black
hole, these resonances lead to a smoking-gun effect: a periastron distance
which {\it s... | 1612.00978v2 |
2008-06-13 | Resonant Plasmon-Soliton Interaction | We describe an effective resonant interaction between two localized wave
modes of different nature: a plasmon-polariton at a metal surface and a
self-focusing beam (spatial soliton) in a non-linear dielectric medium.
Propagating in the same direction, they represent an exotic coupled-waveguide
system, where the resonan... | 0806.2183v2 |
2016-11-29 | 30-Hz relative linewidth watt output power 1.65-$μ$m continuous-wave singly resonant optical parametric oscillator | We built a 1-watt cw singly resonant optical parametric oscillator operating
at an idler wavelength of 1.65~$\mu$m for application to quantum interfaces.
The non resonant idler is frequency stabilized by side-fringe locking on a
relatively high-finesse Fabry-Perot cavity, and the influence of intensity
noise is careful... | 1611.09659v3 |
2019-07-03 | Optomechanical tension and crumpling of resonant membranes | We predict that illumination by a plane electromagnetic wave of optically
resonant membranes, such as graphene or monolayers of transition metal
dichalcogenides, directly affects their mechanical tension. The induced
optomechanical tension is anisotropic and, depending on the spectral detuning
from the resonance, can b... | 1907.02010v1 |
2019-12-31 | Series Resonant Matrix Converter Topology for EV DC Fast Charging | In this paper, we presented a matrix converter with a high-frequency DC link
for EV DC fast charging applications. Introducing this topology allows
eliminating electrolytic capacitors in DC link of the converter, which
potentially increases the reliability and power density of the system. The
converter uses bidirection... | 1912.13241v1 |
2019-11-04 | THz graphene W-shaped three-port circulator with dynamical control | We propose a new graphene-based THz circulator. It consists of a circular
graphene resonator and three graphene nanoribbon waveguides of W-geometry
placed on a dilectric substrate. Surface plasmon-polariton waves propagate in
the waveguides. The nanoribbon excites in the resonator dipole resonance.
Nonreciprocity of th... | 2001.10078v1 |
2020-07-08 | $Λ$ and $Σ$ Excitations and the Quark Model | The spectrum of $\Lambda$ and $\Sigma$ excitations is reviewed taking into
account (nearly) all hyperon resonances which were seen in early analyses or in
one of the recent partial-wave analyses. The spectrum is compared with the old
Isgur-Karl model and the Bonn model. These models allows us to discuss the
SU(3) struc... | 2007.04232v1 |
2020-10-16 | Quasinormal Coupled Mode Theory | Coupled mode theory (CMT) is a powerful framework for decomposing
interactions between electromagnetic waves and scattering bodies into
resonances and their couplings with power-carrying channels. It has widespread
use in few-resonance, weakly coupled resonator systems across nanophotonics,
but cannot be applied to the... | 2010.08650v2 |
2022-02-21 | Excitation of absorbing exceptional points in the time domain | We analyze the time-domain dynamics of resonators supporting exceptional
points (EPs), at which both the eigenfrequencies and the eigenmodes associated
with perfect capture of an input wave coalesce. We find that a time-domain
signature of the EP is an expansion of the class of waveforms which can be
perfectly captured... | 2202.10567v2 |
2022-03-09 | Evidence of ac-Stark-shifted resonances in intense two-color circularly polarized laser fields | We report on the appearance of a structure at low energies in the
photo-electron momentum distribution of the hydrogen atom exposed to two-color
counter-rotating bi-circular laser fields. These structures, which arise due to
AC-Stark shifted resonances, break the three-fold symmetry, typical for the
$\omega-2\omega$ bi... | 2203.04839v1 |
2022-10-10 | Resonances and Eigenvalues for the Constant Mean Curvature Equation | In this paper we study resonances and eigenvalues for the nonlinear constant
mean curvature eqn. linearized around the bubbles found by Brezis-Coron. This
nonlinear eqn. is also called a H-system eqn. For degree one bubbles(the degree
relates to a certain winding number) we only find resonances. For higher degree
we pr... | 2210.04580v1 |
2024-02-19 | Exploring Astrophysically-Relevant Superadiabaticity Driven by Non-Resonant Heating in a Laboratory Magnetized Plasma | The polytropic index of electrons in a magnetized plasma is experimentally
investigated in the presence of external heating and anisotropic work done on
the system by the magnetic field. The measurements clearly demonstrate
localized regions of superadiabatic electrons due to particle acceleration and
energization thro... | 2402.11937v1 |
2001-03-20 | Antiferromagnetically coupled alternating spin chains | The effect of antiferromagnetic interchain coupling in alternating spin
(1,1/2) chains is studied by mean of a spin wave theory and density matrix
renormalization group (DMRG). In particular, two limiting cases are
investigated, the two-leg ladder and its two dimensional (2D) generalization.
Results of the ground state... | 0103424v1 |
2001-09-10 | Dimensional crossover in alternating spin chains | The effect of antiferromagnetic interchain coupling in alternating spin
(1,1/2) chains is studied by mean of spin wave theory and density matrix
renormalization group(DMRG). Two limiting cases are investigated, the two-leg
ladder and its two dimensional (2D) generalization. For the 2D case, spin wave
approximation pred... | 0109179v1 |
2003-10-27 | Transverse spin dynamics in a spin-polarized Fermi liquid | The linear equations for transverse spin dynamics in weakly polarised
degenerate Fermi liquid with arbitrary relationship between temperature and
polarization are derived from Landau-Silin phenomenological kinetic equation
with general form of two-particle collision integral. The temperature and
polarization dependence... | 0310620v2 |
2004-02-16 | Magnetic excitations in a bond-centered stripe phase: Spin waves far from the semi-classical limit | Using a spin-only model, we compute spin excitation spectra in a
bond-centered stripe state with long-range magnetic order. We employ a bond
operator formalism, which naturally captures both dimerization and broken spin
symmetry in a unified framework. At low energies, the spin excitations resemble
spin waves, but at h... | 0402377v2 |
2004-06-25 | Excitations of incoherent spin-waves due to spin-transfer torque | As predicted by Slonczewski and Berger, the possibility of exciting microwave
oscillations in a nanomagnet by a spin-polarized current has been recently
demonstrated. This observation opens very important perspectives of
applications in RF components. However, some unresolved inconsistencies are
found when interpreting... | 0406628v3 |
2005-05-24 | Valence-bond-solid order in antiferromagnets with spin-lattice coupling | We propose that a valence-bond-solid (VBS) order can be stabilized in certain
two-dimensional antiferromagnets due to spin-lattice coupling. In contrast to
the VBS state of the Affleck-Kennedy-Lieb-Tesaki (AKLT) type in which the spin
$2S$ and the lattice coordination $z$ must be commensurate, the spin-lattice
coupling... | 0505573v5 |
1995-07-13 | Monte Carlo Study of the Yukawa Coupled Two Spin Ising Model | We consider a particular 4 state spin system composed of two Ising spins
(~$s_x, \; \sigma_x$~) with independent hopping parameters $\kappa_1,
\kappa_2$, coupled by a bilinear Yukawa term, $y s_x \sigma_x$. The Yukawa term
is solely responsible for breaking the global $ Z_2 \times Z_2$ symmetry down
to $Z_2$. This mode... | 9507015v1 |
2007-08-27 | Spin dynamics in a one-dimensional ferromagnetic Bose gas | We investigate the propagation of spin excitations in a one-dimensional (1D)
ferromagnetic Bose gas. While the spectrum of longitudinal spin waves in this
system is sound-like, the dispersion of transverse spin excitations is
quadratic making a direct application of the Luttinger Liquid (LL) theory
impossible. By using... | 0708.3638v2 |
2007-11-27 | Non-linear dynamics and two-dimensional solitons for spin $ S=1$ ferromagnets with biquadratic exchange | We develop a consistent semiclassical theory of spin dynamics for an
isotropic ferromagnet with a spin $ S=1$ taking into consideration both
bilinear and biquadratic over spin operators exchange interaction. For such
non-Heisenberg magnets, a peculiar class of spin oscillations and waves, for
which the quantum spin exp... | 0711.4285v1 |
2008-01-28 | Modulated spin waves and robust quasi-solitons in classical Heisenberg rings | We investigate the dynamical behavior of finite rings of classical spin
vectors interacting via nearest-neighbor isotropic exchange in an external
magnetic field. Our approach is to utilize the solutions of a continuum version
of the discrete spin equations of motion (EOM) which we derive by assuming
continuous modulat... | 0801.4262v1 |
2008-04-04 | Spin-charge coupling in a band ferromagnet: magnon-energy reduction, anomalous softening, and damping | The effects of correlation-induced coupling between spin and charge
fluctuations on spin-wave excitations in a band ferromagnet are investigated by
including self-energy and vertex corrections within a systematic
inverse-degeneracy expansion scheme which explicitly preserves the Goldstone
mode. Arising from the scatter... | 0804.0680v1 |
2008-07-10 | Spin rotations induced by electron running on closed trajectories in gated semiconductor nanodevices | A design for a quantum gate performing transformations of a single electron
spin is presented. The spin rotations are performed by the electron going
around the closed loops in a gated semiconductor device. We demonstrate the
operation of NOT, phase-flip and Hadamard quantum gates, i.e. the single-qubit
gates which are... | 0807.1627v2 |
2009-01-15 | Spin Rotation Technique for Non-Collinear Magnetic Systems: Application to the Generalized Villain Model | This work develops a new generalized technique for determining the static and
dynamic properties of any non-collinear magnetic system. By rotating the spin
operators into the local spin reference frame, we evaluate the zeroth, first,
and second order terms in a Holstein-Primakoff expansion, and through a Green's
functi... | 0901.2332v2 |
2009-08-18 | Dynamic spin susceptibility in the t-J model | A relaxation-function theory for the dynamic spin susceptibility in the
$t$--$J$ model is presented. By a sum-rule-conserving generalized mean-field
approximation (GMFA), the two-spin correlation functions of arbitrary range,
the staggered magnetization, the uniform static susceptibility, and the
antiferromagnetic corr... | 0908.2557v2 |
2011-08-18 | Bands, spin fluctuations and traces of Fermi surfaces in angle-resolved photoemission intensities for high-$T_C$ cuprates | The band structures of pure and hole doped La$_2$CuO$_4$ with
antiferromagnetic (AFM) spin-fluctuations are calculated and compared to
spectral weights of ARPES. It is shown that observations of coexisting Fermi
surface (FS) arcs and closed FS pockets are consistent with modulated AFM spin
fluctuations of varying wave ... | 1108.3775v1 |
2012-10-03 | Waves of spin-current in magnetized dielectrics | Spin-current is an important physical quantity in present day spintronics and
it might be very usefull in the physics of quantum plasma of spinning
particles. Thus it is important to have an equation of the spin-current
evolution. This equation naturally appears as a part of a set of the quantum
hydrodynamics (QHD) equ... | 1210.1090v2 |
2013-03-24 | Spin-Transfer Torques in Helimagnets | We theoretically investigate current-induced magnetization dynamics in
chiral-lattice helimagnets. Spin-orbit coupling in non-centrosymmetric crystals
induces a reactive spin-transfer torque that has not been previously
considered. We demonstrate how the torque is governed by the crystal symmetry
and acts as an effecti... | 1303.5921v2 |
2014-03-27 | Itinerant magnetism in Weyl spin-orbit coupled Fermi gas | Magnetic ordering of itinerant fermionic systems is at the forefront of
condensed matter physics dating back to Stoner's instability. Spin-orbit
coupling (SOC) which couples two essential ingredients of an itinerant
fermionic system, namely spin and orbital motion, opens up new horizons to this
long-standing problem. H... | 1403.7031v6 |
2014-07-03 | Design local spin models for Gutzwiller-projected parton wave functions | We introduce a method to design a local spin Hamiltonian to realize a
Gutzwiller-projected parton wave functions (GPWF) as its ground state. For
example, the Dirac spin liquid (DSL) state is quite close to the true ground
state of the spin-1/2 Heisenberg model on kagome lattice. We examine what kind
of perturbations we... | 1407.0869v1 |
2014-10-23 | Gravitational waves from spinning compact binaries in hyperbolic orbits | Compact binaries in hyperbolic orbits are plausible gravitational wave (GW)
sources for the upcoming and planned GW observatories. We develop an efficient
prescription to compute post-Newtonian (PN) accurate ready-to-use GW
polarization states for spinning compact binaries, influenced by the dominant
order spin-orbit i... | 1410.6311v3 |
2015-01-28 | Spin Current in Junctions composed of Multi-band Superconductors with a Spin-density Wave | We calculate a nondissipative spin current and show that it can flow with or
without a charge current. We consider a two-band model which can be applied to
the description of Fe-based pnictides in coexistence regime of
superconductivity and spin-density wave. Using quasiclassical Green's functions
approach and tunnelin... | 1501.07280v1 |
2016-02-27 | Nonlinear separate spin evolution in degenerate electron-positron-ion plasmas | The non-linear evolution of spin-electron acoustic, positron-acoustic, and
spin-electron-positron acoustic waves is considered. It is demonstrated that
weakly nonlinear dynamics of each wave leads to the soliton formation.
Altogether, we report on existence of three different solitons. The
spin-electron acoustic solito... | 1602.08640v1 |
2016-04-06 | Antiferromagnetic domain wall motion driven by spin-orbit torques | We theoretically investigate dynamics of antiferromagnetic domain walls
driven by spin-orbit torques in antiferromagnet/heavy metal bilayers. We show
that spin-orbit torques drive antiferromagnetic domain walls much faster than
ferromagnetic domain walls. As the domain wall velocity approaches the maximum
spin-wave gro... | 1604.01473v1 |
2016-04-11 | All-Optical Study of Tunable Ultrafast Spin Dynamics in [Co/Pd]-NiFe Systems: The Role of Spin-Twist Structure on Gilbert Damping | We investigate optically induced ultrafast magnetization dynamics in [Co(0.5
nm)/Pd(1 nm)]x5/NiFe(t) exchange-spring samples with tilted perpendicular
magnetic anisotropy using a time-resolved magneto-optical Kerr effect
magnetometer. The competition between the out-of-plane anisotropy of the hard
layer, the in-plane a... | 1604.02998v1 |
2019-03-27 | Observing Black Holes Spin | The spin of a black hole retains the memory of how the black hole grew, and
can be a potent source of energy for powering relativistic jets. To understand
the diagnostic power and astrophysical significance of black hole spin,
however, we must first devise observational methods for measuring spin. Here, I
describe the ... | 1903.11704v1 |
2020-11-09 | Spin-wave dynamics and symmetry breaking in an artificial spin ice | Artificial spin ices are periodic arrangements of interacting nanomagnets
successfully used to investigate emergent phenomena in the presence of
geometric frustration. Recently, it has been shown that artificial spin ices
can be used as building blocks for creating functional materials, such as
magnonic crystals, and s... | 2011.04505v2 |
2017-01-18 | Finite Temperature Phases of Two Dimensional Spin-Orbit Coupled Bosons | We determine the finite temperature phase diagram of two dimensional bosons
with two hyperfine (pseudo-spin) states coupled via Rashba-Dresselhaus
spin-orbit interaction using classical field Monte Carlo calculations. For
anisotropic spin-orbit coupling, we find a transition to a
Berenzinskii-Kosterlitz-Thouless superf... | 1701.05002v1 |
2017-03-02 | On the nonlinear NMR and magnon BEC in antiferromagnetic materials with coupled electron-nuclear spin precession | We present a new study of nonlinear NMR and Bose-Einstein Condensation (BEC)
of nuclear spin waves in antiferromagnetic MnCO3 with coupled electron and
nuclear spins. In particular, we show that the observed behaviour of NMR
signals strongly contradicts the conventional description of paramagnetic
ensembles of noninter... | 1703.00614v2 |
2019-04-05 | First-principles Study of Spin-wave Excitations of 3$d$ Transition Metals with Linear Combination of Pseudo-atomic Orbitals | We have employed the generalized Bloch theorem to evaluate the spin stiffness
constants of 3$d$ transition metals (bcc-Fe, fcc-Co, and fcc-Ni) within the
linear combination of pseudo-atomic orbitals (LCPAO). The spin stiffness
constants were obtained by fitting the spin-wave energy curve, which relates to
the total ene... | 1904.02982v1 |
2020-06-30 | Multi-solitons of the half-wave maps equation and Calogero-Moser spin-pole dynamics | We consider the half-wave maps (HWM) equation which provides a continuum
description of the classical Haldane-Shastry spin chain on the real line. We
present exact multi-soliton solutions of this equation. Our solutions describe
solitary spin excitations that can move with different velocities and interact
in a non-tri... | 2006.16826v1 |
2020-10-13 | Effects of spin-orbit torque on the ferromagnetic and exchange spin wave modes in ferrimagnetic CoGd alloy | We use micro-focus Brillouin light scattering spectroscopy to study the
effects of spin-orbit torque on thermal spin waves in almost angular-momentum
compensated ferrimagnetic CoGd alloy films. The spin-orbit torque is produced
by the electric current flowing in the Pt layer adjacent to CoGd. Both the
ferromagnetic and... | 2010.06615v1 |
2020-10-22 | Spin-current version of solar cells in non-centrosymmetric magnetic insulators | Photovoltaic effect, e.g., solar cells, converts light into DC electric
current. This phenomenon takes place in various setups such as in
noncentrosymmetric crystals and semiconductor pn junctions. Recently, we
proposed a theory for producing DC spin current in magnets using
electromagnetic waves, i.e., the spin-curren... | 2010.11795v1 |
2021-07-27 | Spin transport-induced damping of coherent THz spin dynamics in iron | We study the damping of perpendicular standing spin-waves (PSSWs) in
ultrathin Fe films at frequencies up to 2.4 THz. The PSSWs are excited by
optically generated ultrashort spin current pulses, and probed optically in the
time domain. Analyzing the wavenumber and thickness dependence of the damping,
we demonstrate tha... | 2107.12812v2 |
2021-09-14 | Magnon Condensation in Dimerized Antiferromagnets with Spin-Orbit Coupling | Bose-Einstein condensation (BEC) of triplet excitations triggered by a
magnetic field, sometimes called magnon BEC, in dimerized antiferromagnets
gives rise to a long-range antiferromagnetic order in the plane perpendicular
to the applied magnetic field. To explore the effects of spin-orbit coupling on
magnon condensat... | 2109.06518v2 |
2021-11-15 | Phase diagram and post-quench dynamics in a double spin-chain system in transverse fields | We propose and explore the physics of a toy multiferroic model by coupling
two distinct dipolar XXZ models in transverse fields. We determine first the
rich ground-state phase diagram of the model using density matrix
renormalization group techniques. Then, we explore the dynamics of the system
after global and local q... | 2111.07831v1 |
2022-05-31 | Propagation of spin channel waves | A mutilated model is constructed to approximate the collision term of spin
Boltzmann equation that incorporates newly appearing collisional invariants
i.e, the total angular momentum. With recourse to degenerate perturbation
theory, the dispersion relations of hydrodynamic modes are formulated, among
which spin modes a... | 2205.15755v2 |
2022-07-19 | Magnetic interactions in AB-stacked kagome lattices: magnetic structure, symmetry, and duality | We present the results of an extensive study of the phase diagram and spin
wave excitations for a general spin model on a hexagonal AB-stacked kagome
system. The boundaries of the magnetic phases are determined via a combination
of numerical (Monte Carlo) and analytical (Luttinger-Tisza) methods. We also
determine the ... | 2207.09297v1 |
2022-09-01 | Spin contributions to the gravitational-waveform modes for spin-aligned binaries at the 3.5PN order | We complete the post-Newtonian (PN) prediction at the 3.5PN order for the
spin contributions to the gravitational waveforms emitted by inspiraling
compact binaries, in the case of quasi-circular, equatorial orbits, where both
spins are aligned with the orbital angular momentum. Using results from the
multipolar post-Mi... | 2209.00374v2 |
2022-12-02 | Coherent magnon-induced domain wall motion in a magnetic insulator channel | Advancing the development of spin-wave devices requires high-quality
low-damping magnetic materials where magnon spin currents can propagate
efficiently and interact effectively with local magnetic textures. We show that
magnetic domain walls (DW) can modulate spin-wave transport in perpendicularly
magnetized channels ... | 2212.01408v1 |
2023-05-25 | Dynamics of the antiferromagnetic spin ice phase in pyrochlore spinels | Motivated by the classical spin-nematic state observed in the breathing
pyrochlore spinel LiGa$_{0.95}$In$_{0.05}$Cr$_4$O$_8$, we theoretically discuss
spin dynamics in models of spin-lattice coupling in these materials.
Semiclassical dynamical simulations successfully recover the key features of
inelastic neutron-scat... | 2305.16386v1 |
2024-01-24 | Building a bridge between comparable and extreme mass ratio black hole binaries: a single spin precessing model for the final state | Modelling the gravitational wave signal from binaries beyond comparable mass
is an important open issue in gravitational wave astronomy. For non-spinning
binaries and when the spins are aligned with the orbital angular momentum, some
first studies concerning the transition between the comparable and extreme mass
ratio ... | 2401.13342v2 |
2024-03-20 | Emission of fast-propagating spin waves by an antiferromagnetic domain wall driven by spin current | Antiferromagnets (AFMs) have great benefits for spintronic applications such
as high frequencies (up to THz), high speeds (up to tens of km/s) of magnetic
excitations, and field-free operation. Advanced devices will require high-speed
propagating spin waves (SWs) as signal carriers, i.e., SWs with high k-vectors,
the e... | 2403.13949v1 |
2007-08-14 | Correlated behavior of conductance and phase rigidity in the transition from the weak-coupling to the strong-coupling regime | We study the transmission through different small systems as a function of
the coupling strength $v$ to the two attached leads. The leads are identical
with only one propagating mode $\xi^E_C$ in each of them. Besides the
conductance $G$, we calculate the phase rigidity $\rho$ of the scattering wave
function $\Psi^E_C$... | 0708.1910v2 |
2020-04-16 | Mathematical analysis of the acoustic imaging modality using bubbles as contrast agents at nearly resonating frequencies | We analyze mathematically the acoustic imaging modality using bubbles as
contrast agents. These bubbles are modeled by mass densities and bulk moduli
enjoying contrasting scales. These contrasting scales allow them to resonate at
certain incident frequencies. We consider two types of such contrasts. In the
first one, t... | 2004.07808v1 |
2021-08-20 | Resonant Spontaneous Bremsstrahlung Effect In The Scattering Of Ultrarelativistic Electrons On Nuclei In A Strong Laser Field | The process of resonant spontaneous bremsstrahlung radiation during the
scattering of ultrarelativistic electrons with energies of the order $\sim 100\
\text{GeV}$ by the nuclei in strong laser fields with intensities up to $I\sim
{{10}^{24}}\ \text{Wc}{{\text{m}}^{\text{-2}}}$ is theoretically studied. Under
resonant ... | 2108.10186v1 |
2017-02-10 | Spin memory effect for compact binaries in the post-Newtonian approximation | The spin memory effect is a recently predicted relativistic phenomenon in
asymptotically flat spacetimes that become nonradiative infinitely far in the
past and future. Between these early and late times, the magnetic-parity part
of the time integral of the gravitational-wave strain can undergo a nonzero
change; this d... | 1702.03300v3 |
2017-11-28 | Non-radiating angularly accelerating electron waves | Accelerating electrons are known to radiate electromagnetic waves, a property
that is central to the concept of many devices, from antennas to synchrotrons.
While the electrodynamics of accelerating charged particles is well understood,
the same is not true for charged matter waves: would a locally accelerating
charged... | 1711.10114v1 |
2018-03-28 | Massless surface wave | An interface between two media is topologically stable two-dimensional object
where 3D-symmetry breaks which allows for existence of many exotic excitations.
A direct way to explore surface excitations is to investigate their interaction
with the surface waves, such as very well known capillary-gravity waves and
crysta... | 1803.10489v1 |
2019-12-18 | Penetration of wind-generated near-inertial waves into a turbulent ocean | An idealized storm scenario is examined in which a wind-generated inertial
wave interacts with a turbulent baroclinic quasi-geostrophic flow. The flow is
initialized by spinning up a Eady model with a realistic stratification
profile. The storm is modeled as an initial value problem for a mixed-layer
confined, horizont... | 1912.08323v1 |
2023-05-11 | Searches for continuous gravitational waves from neutron stars: A twenty-year retrospective | Seven years after the first direct detection of gravitational waves, from the
collision of two black holes, the field of gravitational wave astronomy is
firmly established. A first detection of continuous gravitational waves from
rapidly-spinning neutron stars could be the field's next big discovery. I
review the last ... | 2305.07106v2 |
2024-04-11 | Vortex-carrying solitary gravity waves of large amplitude | In this paper, we study two-dimensional traveling waves in finite-depth water
that are acted upon solely by gravity. We prove that, for any supercritical
Froude number (non-dimensionalized wave speed), there exists a continuous
one-parameter family $\mathcal{C}$ of solitary waves in equilibrium with a
submerged point v... | 2404.08074v1 |
2021-09-21 | Wave Function Identity: A New Symmetry for 2-electron Systems in an Electromagnetic Field | Stationary-state Schr{\"o}dinger-Pauli theory is a description of electrons
with a spin moment in an external electromagnetic field. For 2-electron systems
as described by the Schr{\"o}dinger-Pauli theory Hamiltonian with a symmetrical
binding potential, we report a new symmetry operation of the electronic
coordinates.... | 2109.10338v1 |
2013-08-13 | Dirac dynamical resonance states around Schwarzschild black holes | Recently, a novel kind of scalar wigs around Schwarzschild black
holes---scalar dynamical resonance states were introduced in [Phys. Rev. D 84,
083008 (2011)] and [Phys. Rev. Lett. 109, 081102 (2012)]. In this paper, we
investigate the existence and evolution of Dirac dynamical resonance states.
First we look for stati... | 1308.2863v3 |
2017-07-06 | Improving superconducting resonators in magnetic fields by reduced field-focussing and engineered flux screening | We experimentally investigate superconducting coplanar waveguide resonators
in external magnetic fields and present two strategies to reduce field-induced
dissipation channels and resonance frequency shifts. One of our approaches is
to significantly reduce the superconducting ground-plane areas, which leads to
reduced ... | 1707.01936v1 |
2018-02-14 | Magnetic Field Dependent Microwave Losses in Superconducting Niobium Microstrip Resonators | We describe an experimental protocol to characterize magnetic field dependent
microwave losses in superconducting niobium microstrip resonators. Our approach
provides a unified view that covers two well-known magnetic field dependent
loss mechanisms: quasiparticle generation and vortex motion. We find that
quasiparticl... | 1802.05183v3 |
2021-03-26 | Microwave resonances of magnetic skyrmions in thin film multilayers | Non-collinear magnets exhibit a rich array of dynamic properties at microwave
frequencies. They can host nanometre-scale topological textures known as
skyrmions, whose spin resonances are expected to be highly sensitive to their
local magnetic environment. Here, we report a magnetic resonance study of an
[Ir/Fe/Co/Pt] ... | 2103.14524v1 |
2022-04-04 | Quantum dimer model on fullerenes: resonance, scarring and confinement | The earliest known examples of quantum superposition were found in organic
chemistry -- in molecules that `resonate' among multiple arrangements of
$\pi$-bonds. Small molecules such as benzene resonate among a few bond
arrangements. In contrast, a large system that stretches over a macroscopic
lattice may resonate amon... | 2204.01756v1 |
2022-05-02 | Regarding the possibility to observe the LHCb hidden-charm strange pentaquark $P_{cs}(4459)^0$ in antikaon-induced $J/ψ$ meson production on protons and nuclei near the $J/ψ$$Λ$ production threshold | We study the near-threshold $J/\psi$ meson production on protons and nuclei
by considering incoherent direct non-resonant $K^-p \to {J/\psi}\Lambda$ and
two-step resonant ${K^-}p \to P_{cs}(4459)^0 \to {J/\psi}\Lambda$ charmonium
production processes. We calculate the absolute excitation functions, energy
and momentum ... | 2205.00728v1 |
2023-05-07 | Photocatalytic oxidation in few-layer Tellurene for loss-invariant integrated photonic resonance trimming | Two-dimensional materials with unique physicochemical properties promote
photocatalytic activities. As the 2D material composites research studies the
statistical average of complex catalytic behaviors, an integrated photonic
platform allows clean and single flake level photo-catalytic investigations
with precisely qua... | 2305.04342v1 |
2006-04-07 | On calculation of elementary particles' masses | The purpose of present paper is to develop the approach to calculation of the
mass spectra of elementary particles within the framework of the resonance
theory of elementary particles as de Broglie waves | 0604063v1 |
2009-03-06 | Dark states of dressed spinor Bose-Einstein condensates of spin-1 atoms | Dressed states of spinor Bose-Einstein condensates of spin-1 atoms located in
optical cavity of near resonance frequency of excited state of the atom are
investigated. The wave function of dark states are given. | 0903.1163v1 |
2010-03-15 | New explicit exact solutions for the Liénard equation and its applications | In this letter, new exact explicit solutions are obtained for the Li\'enard
equation, and the applications of the results to the generalized
Pochhammer-Chree equation, the Kundu equation and the generalized long-short
wave resonance equations are presented. | 1003.2921v1 |
2011-10-19 | Pseudo-Hermitian Quantum Dynamics of Tachyonic Spin-1/2 Particles | We investigate the spinor solutions, the spectrum and the symmetry properties
of a matrix-valued wave equation whose plane-wave solutions satisfy the
superluminal (tachyonic) dispersion relation E^2 = p^2 - m^2, where E is the
energy, p is the spatial momentum, and m is the mass of the particle. The
equation reads (i g... | 1110.4171v3 |
2014-06-17 | Softening of Granular Packings with Dynamic Forcing | We perform numerical simulations of a two-dimensional bidisperse granular
packing subjected to both a static confining pressure and a sinusoidal dynamic
forcing applied by a wall on one edge of the packing. We measure the response
experienced by a wall on the opposite edge of the packing and obtain the
resonant frequen... | 1406.4529v1 |
2019-02-19 | Brewster quasi bound states in the continuum in all-dielectric metasurfaces from single magnetic-dipole resonance meta-atoms | Bound states in the continuum (BICs) are ubiquitous in many areas of physics,
attracting especial interest for their ability to confine waves with infinite
lifetimes. Metasurfaces provide a suitable platform to realize them in
photonics; such BICs are remarkably robust, being however complex to tune in
frequency-waveve... | 1902.07148v2 |
2020-04-15 | Millimeter-Wave Huygens' Transmit-Arrays based on Coupled Metallic Resonators | A novel Huygens' transmit-array is proposed based on a coupled-resonator
approach where two identical elliptical metallic patches with an elliptical
hole separated by a dielectric substrate has been used to demonstrate
millimeter-wave (mm-Wave) beam-forming for linear polarization. The proposed
structure is simple and ... | 2004.07129v1 |
2017-06-18 | The Auger Effect and Ionization of Inner Atomic Shells | The Auger effect from inner shells, which arises from resonance excitation of
the valence electron of an atom by a weak electromagnetic wave, is discussed. | 1706.06465v2 |
2020-10-07 | Primordial black holes and gravitational waves from resonant amplification during inflation | We present a new realization of the resonant production of primordial black
holes as well as gravitational waves in a two-stage inflation model consisting
of a scalar field \phi with an axion-monodromy-like periodic structure in the
potential that governs the first stage and another field \chi with a
hilltop-like poten... | 2010.03537v2 |
2021-05-29 | Green's functions of and emission into discrete anisotropic and hyperbolic baths | In this work, we study wave propagation in generic Hermitian local periodic
baths, and investigate the effects of anisotropy and quasi-breaking of
periodicity on resonant emission into the band of the bath. We asymptotically
decompose the Green's function into long-range travelling waves composed of all
wavevectors (ne... | 2105.14238v3 |
2022-06-22 | The Foldy-Lax approximation is valid for nearly resonating frequencies | The waves (including acoustic, electromagnetic and elastic ones) propagating
in the presence of a cluster of inhomogeneities undergo multiple interactions
between them. When these inhomogeneities have sub-wavelength sizes, the
dominating field due to the these multiple interactions is the Foldy-Lax field.
This field mo... | 2206.10899v1 |
1992-09-11 | Spin liquid phase for the frustrated Quantum Heisenberg Antiferromagnet on a square lattice | The existance of a spin disordered ground state for the frustrated Quantum
Heisenberg Antiferromagnet on a square lattice is reconsidered. It is argued
that there is a unique action which is continuous through the whole phase
diagram, except at the Lifshitz point, so that the Neel and helicoidal states
can not coexist ... | 9209009v1 |
1994-05-09 | One-Dimensional Kondo Lattice at Half Filling: Charge Properties | The model of Kondo chain with $M$-fold degenerate band of conduction
electrons of spin 1/2 at half filling interacting with localized spins $S$ is
studied. It is shown that due to the instanton effects the spin sector reveals
itself in optical conductivity. Namely, the density of the charge current at
large wave vector... | 9405024v1 |
1997-12-02 | Mixed spin ladders with exotic ground states | We study the "mixed spin" isotropic ladder system having S=1 spins on one leg
and S=1/2 spins on the other, with general-type exchange interactions between
spins on neighboring rungs. A set of model Hamiltonians with exact ground
states in the form of a certain matrix product wave function is obtained. We
show that suf... | 9712022v1 |
1998-03-12 | Frustrated quantum Heisenberg ferrimagnetic chains | We study the ground-state properties of weakly frustrated Heisenberg
ferrimagnetic chains with nearest and next-nearest neighbor antiferromagnetic
exchange interactions and two types of alternating sublattice spins S_1 > S_2,
using 1/S spin-wave expansions, density-matrix renormalization group, and
exact- diagonalizati... | 9803150v1 |
1998-10-05 | Quantum critical point with competing propagating and diffusive spin excitations | Feedback effects due to spin fluctuation induced precursors in the fermionic
quasiparticle spectrum are taken into account in the description of a quantum
critical point of itinerant spin systems. A correlation length dependent spin
damping occurs, leading to a dynamical scaling with z\approx 1 which
non-trivially comp... | 9810041v1 |
1999-09-01 | Dynamic spin susceptibility in the t-J model | Dynamic spin susceptibility is calculated for the t-J model in the
paramagnetic phase by applying the memory function method in terms of the
Hubbard operators. A self-consistent system of equations for the memory
function is obtained within the mode coupling approximation. Both itinerant
hole excitations and localized ... | 9909019v1 |
2000-02-01 | Rashba spin splitting in two-dimensional electron and hole systems | In two-dimensional (2D) hole systems the inversion asymmetry induced spin
splitting differs remarkably from its familiar counterpart in the conduction
band. While the so-called Rashba spin splitting of electron states increases
linearly with in-plane wave vector k_|| the spin splitting of heavy hole states
can be of th... | 0002003v1 |
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