publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
|---|---|---|---|
2000-01-31 | Magnon dispersions in quantum Heisenberg ferrimagnetic chains at zero temperature | Within the Dyson-Maleev boson formalism, we study the zero-temperature magnon
dispersions in a family of one-dimensional quantum Heisenberg ferrimagnets
composed of two different spins $(S_1,S_2)$ in the elementary cell. It is shown
that the spin-wave theory can produce precise quantitative results for the
low-energy e... | 0001441v1 |
2001-11-28 | Spin Excitations in La2CuO4: Consistent Description by Inclusion of Ring-Exchange | We consider the square lattice Heisenberg antiferromagnet with plaquette ring
exchange and a finite interlayer coupling leading to a consistent description
of the spin-wave excitation spectrum in La2CuO4. The values of the in-plane
exchange parameters, including ring-exchange J_{\Box}, are obtained
consistently by an a... | 0111533v1 |
2002-11-15 | Collective modes in unconventional density waves | We have investigated the collective modes of unconventional charge and spin
density waves (UCDW, USDW) in quasi-one dimensional systems in random phase
approximation. The density correlator regains its normal state form due to the
phase degree of freedom of the condensate. The possible effect of impurities is
also disc... | 0211316v1 |
2003-06-07 | Microscopic Wave Functions of Spin Singlet and Nematic Mott States of Spin-One Bosons in High Dimensional Bipartite Lattices | We present microscopic wave functions of spin singlet Mott insulating states
and nematic Mott insulating states. We also investigate quantum phase
transitions between the spin singlet Mott phase and the nematic Mott phase in
both large-N limit and small-N limit (N being the number of particles per site)
in high dimensi... | 0306198v2 |
2004-02-25 | Spin Dynamics of a Canted Antiferromagnet in a Magnetic Field | The spin dynamics of a canted antiferromagnet with a quadratic spin-wave
dispersion near $\vq =0$ is shown to possess a unique signature. When the
anisotropy gap is negligible, the spin-wave stiffness $\dsw (\vq, B) =
(\omega_{\vq}-B)/q^2$ depends on whether the limit of zero field or zero
wavevector is taken first. Co... | 0402633v2 |
2004-06-21 | Magnetic susceptibility, exchange interactions and spin-wave spectra in the local spin density approximation | Starting from exact expression for the dynamical spin susceptibility in the
time-dependent density functional theory a controversial issue about exchange
interaction parameters and spin-wave excitation spectra of itinerant electron
ferromagnets is reconsidered. It is shown that the original expressions for
exchange int... | 0406488v1 |
2005-02-22 | Dynamics of weakly coupled random antiferromagnetic quantum spin chains | We study the low-energy collective excitations and dynamical response
functions of weakly coupled random antiferromagnetic spin-1/2 chains. The
interchain coupling leads to Neel order at low temperatures. We use the
real-space renormalization group technique to tackle the intrachain couplings
and treat the interchain c... | 0502530v2 |
2005-04-12 | Spin-charge separation in cold Fermi-gases: a real time analysis | Using the adaptive time-dependent density-matrix renormalization group method
for the 1D Hubbard model, the splitting of local perturbations into separate
wave packets carrying charge and spin is observed in real-time. We show the
robustness of this separation beyond the low-energy Luttinger liquid theory by
studying t... | 0504299v2 |
2006-06-30 | Spin-Wave Lifetimes Throughout the Brillouin Zone | We use a neutron spin-echo method with $\mu$eV resolution to determine the
lifetimes of spin waves in the prototypical antiferromagnet MnF$_2$ over the
entire Brillouin zone. A theory based on the interaction of magnons with
longitudinal spin fluctuations provides an excellent, parameter-free
description of the data, e... | 0606814v1 |
2000-09-20 | Gravitational waves and spinning test particles | The motion of a classical spinning test particle in the field of a weak plane
gravitational wave is studied. It is found that the characteristic dimensions
of the particle's orbit is sensitive to the ratio of the spin to the mass of
the particle. The results are compared with the corresponding motion of a
particle with... | 0009070v1 |
2005-10-25 | Beam Splitter for Spin Waves in Quantum Spin Network | We theoretically design and analytically study a controllable beam splitter
for the spin wave propagating in a star-shaped (e.g., a $Y$-shaped beam) spin
network. Such a solid state beam splitter can display quantum interference and
quantum entanglement by the well-aimed controls of interaction on nodes. It
will enable... | 0510194v3 |
2007-04-26 | Coupling of phonons and spin waves in triangular antiferromagnet | We investigate the influence of the spin-phonon coupling in the triangular
antiferromagnet where the coupling is of the exchange-striction type. The
magnon dispersion is shown to be modified significantly at wave vector (2pi,0)
and its symmetry-related points, exhibiting a roton-like minimum and an
eventual instability... | 0704.3510v2 |
2007-09-17 | Magnetic order and spin fluctuations in low-dimensional insulating systems | The current theoretical and experimental situations are reviewed for
low-dimensional insulating systems with a low magnetic transition temperature
TM and pronounced short-range magnetic order above this temperature. Both the
standard and self-consistent spin-wave theories are shown to be insufficient to
quantitatively ... | 0709.2690v1 |
2008-04-30 | Phase diagram of the t-U-J1-J2 chain at half filling | We investigate the half-filled Hubbard chain with additional nearest- and
next-nearest-neighbor spin exchange, J1 and J2, using bosonization and the
density-matrix renormalization group. For J2 = 0 we find a spin-density-wave
phase for all positive values of the Hubbard interaction U and the Heisenberg
exchange J1. A f... | 0804.4810v1 |
2008-07-03 | Zero-size objects in Riemann-Cartan spacetime | We use the conservation law of the stress-energy and spin tensors to study
the motion of massive zero-size objects in Riemann-Cartan geometry. The
resultant world line equations turn out to exhibit a novel spin-curvature
coupling. In particular, the spin of the Dirac particle does not couple to the
background curvature... | 0807.0596v1 |
2009-02-20 | Properties of high-$T_c$ copper oxides from band models of spin-phonon coupling | The mechanism of spin-phonon coupling (SPC) and possible consequencies for
the properties of high-$T_C$ copper oxides are presented. The results are based
on ab-initio LMTO band calculations and a nearly free-electron (NFE) model of
the band near $E_F$. Many observed properties are compatible with SPC, as for
the relat... | 0902.3580v1 |
2009-07-13 | Low Temperature Limit of Stability of Coherent Precession of Spin in the Superfluid 3He-B | It is shown that instability of homogeneous precession is caused by combined
effect of anisotropy of spin wave velocities and dipole interaction. In the
principal order on the ratio of the Leggett frequency to the Larmor frequency
the increments of growth of spin wave amplitudes are found. The magnitude of
the maximum ... | 0907.2119v1 |
2010-02-16 | ADM canonical formulation with spin and application to post-Newtonian approximations | Recently, different methods succeeded in calculating the spin dynamics at
higher orders in the post-Newtonian (PN) approximation. This is an essential
step toward the determination of more accurate templates for gravitational
waves, to be used in future gravitational wave astronomy. We focus on the
extension of the ADM... | 1002.3057v1 |
2010-10-17 | Exact solution for large amplitude circularly polarized electromagnetic waves in incompressible spin quantum Hall magnetohydrodynamics | It is shown that incompressible spin quantum Hall magnetohydrodynamics allows
an exact solution for the propagation of a circularly polarized electromagnetic
wave. The solution is obtained assuming a condition between the fluid velocity
and the magnetic field which eliminates the nonlinear terms in Maxwell
equations. A... | 1010.3452v1 |
2011-01-18 | Magnetic Excitations in the Site-Centered Stripe Phase: Spin Wave Theory of Coupled Three-Leg Ladders | The success of models of coupled two-leg spin ladders in describing the
magnetic excitation spectrum of La_{2-x}Ba_xCuO_4 had been interpreted
previously as evidence for bond-centered stripes. In a recent article, however,
we have determined the magnetic coupling induced by the charge stripes between
bond- or site-cent... | 1101.3434v1 |
2011-08-05 | One-dimensional physics in transition-metal nanowires: Phases and elementary excitations | We used the Hartree-Fock approximation to classify the electronic phases that
might occur in a transition metal nanowire. The important features of this
situation are orbital degeneracy (or near-degeneracy) and interactions favoring
locally high-spin configurations. In this circumstance, spin density wave and
triplet s... | 1108.1389v1 |
2012-03-07 | Anomalous Behavior of Spin Systems with Dipolar Interactions | We study the properties of spin systems realized by cold polar molecules
interacting via dipole-dipole interactions in two dimensions. Using a spin wave
theory, that allows for the full treatment of the characteristic long-distance
tail of the dipolar interaction, we find several anomalous features in the
ground state ... | 1203.1624v2 |
2013-03-10 | Spin Dynamics of Trimers on a Distorted Kagomé Lattice | We treat the ground state, elementary excitations, and neutron scattering
cross section for a system of trimers consisting of three tightly bound spins
1/2 on a distorted Kagom\'e lattice, subject to isotropic nearest neighbor
(usually antiferromagnetic) Heisenberg interactions. The interactions between
trimers are ass... | 1303.2320v1 |
2014-10-08 | $\mathbb Z_2$ slave-spin theory of a strongly correlated Chern insulator | We calculate the phase diagram of the topological honeycomb model in the
presence of strong interactions. We concentrate on half filling and employ a
${\mathbb Z}_{2}$ slave-spin method to find a band insulator with staggered
density, a spin-density-wave and a Mott insulating phase. Both the band
insulator and the spin... | 1410.2001v1 |
2015-01-26 | Illustration of spin-half wave-functions, and other fractional-spin structures | We provide an illustration of a geometric structure that exhibits the
spin-half wave-function characteristics, namely that its full rotation displays
a phase inversion. We show that general fractional-spin geometric structures
are possible, along with sketchy discussions concerning group-theoretical and
quantum descrip... | 1501.06292v1 |
2018-10-10 | The geometro-hydrodynamical formalism of quantum spinning particle | We present the development of the realistic geometro-hydrodynamical formalism
of quantum mechanics for the spinning particle, that involves the vortical
flows and is based on the idea, that the spinor wave represents a new type of
physical field, propagating in space-time and influencing the corpuscule
embedded in the ... | 1810.04716v1 |
2021-10-13 | Spin elastodynamic motive force | The spin-motive force (SMF) in a simple ferromagnetic monolayer caused by a
surface acoustic wave is studied theoretically via spin-vorticity coupling
(SVC). The SMF has two mechanisms. The first is the SVC-driven SMF, which
produces the first harmonic electromotive force, and the second is the
interplay between the SV... | 2110.06552v1 |
2008-06-19 | Dirac particle in gravitational field | Classical dynamics of spinning zero-size objects in an external gravitational
field is derived from the conservation law of the stress-energy and spin
tensors. The resulting world line equations differ from those in the existing
literature. In particular, the spin of the Dirac particle does not couple to
the background... | 0806.3228v1 |
2008-06-25 | Spin polarized transport driven by square voltage pulses in a quantum dot system | We calculate current, spin current and tunnel magnetoresistance (TMR) for a
quantum dot coupled to ferromagnetic leads in the presence of a square wave of
bias voltage. Our results are obtained via time-dependent nonequilibrium Green
function. Both parallel and antiparallel lead magnetization alignments are
considered.... | 0806.4193v1 |
2016-11-05 | Magnonic analog of relativistic Zitterbewegung in an antiferromagnetic spin chain | We theoretically investigate the spin wave (magnon) excitations in a
classical antiferromagnetic spin chain with easy-axis anisotropy. We obtain a
Dirac-like equation by linearizing the Landau- Lifshitz-Gilbert equation in
this antiferromagnetic system, in contrast to the ferromagnetic system in which
a Schr\"{o}dinger... | 1611.01512v2 |
2020-10-05 | Localized excitations and scattering of spin waves in ferromagnetic chains containing magnetic nanoclusters | The spectrum of localized excitations in an anisotropic one-dimensional
ferromagnet containing a spin cluster of arbitrary size is found exactly within
the framework of the discrete Takeno-Homma model. The boundaries of stability
of spin nanoclusters are determined, depending on their size, and the exchange
and the ani... | 2010.01861v1 |
2022-09-28 | Unidirectional magnetic coupling | We show that interlayer Dzyaloshinskii-Moriya interaction in combination with
non-local Gilbert damping gives rise to unidirectional magnetic coupling. That
is, the coupling between two magnetic layers -- say the left and right layer --
is such that dynamics of the left layer leads to dynamics of the right layer,
but n... | 2209.14179v1 |
2024-03-15 | Chiral-stress-energy-momentum tensor for covariant description of spin and torque densities of light | The measurement of the spin angular momentum of circularly polarized light by
Beth [Phys. Rev. 50, 115 (1936)] can be explained by using a microscopic torque
density. However, the experiment does not resolve the space- and time-dependent
evolution of the spin density of light and the wave plate and the covariant
form o... | 2403.10466v1 |
2005-09-25 | Gravitational wave detection by a spherical antenna: the angular sensitivity of resonators in the TIGA configuration and its variation with sidereal time and galactic longitude | Experimental projects using spherical antennas to detect gravitational waves
are nowdays a concrete reality. The main purpose of this paper is to give a
possible way of interpreting output data from such a system. Responses of the
five fundamental quadrupole modes and of the six resonators in TIGA
collocations are show... | 0509095v2 |
2005-10-17 | Phase effects in neutrino conversions during a supernova shock wave | Neutrinos escaping from a core collapse supernova a few seconds after bounce
pass through the shock wave, where they may encounter one or more resonances
corresponding to $\Delta m^2_{\rm atm}$. The neutrino mass eigenstates in
matter may stay coherent between these multiple resonances, giving rise to
oscillations in t... | 0510219v3 |
2002-10-01 | Quantum chaos in optical systems: The annular billiard | We study the dielectric annular billiard as a quantum chaotic model of a
micro-optical resonator. It differs from conventional billiards with hard-wall
boundary conditions in that it is partially open and composed of two dielectric
media with different refractive indices. The interplay of reflection and
transmission at... | 0210002v1 |
2006-03-13 | Resonant coupling between bulk waves and guided modes in a dielectric slab with a thick holographic grating | What we believe to be a new type of resonant coupling of an incident bulk
wave into guided modes of a slab with a thick holographic grating is shown to
occur in the presence of strong frequency detunings of the Bragg condition.
This happens through the reflection of the strongly noneigen +1 diffracted
order with the sl... | 0603096v1 |
2006-07-12 | Evanescent wave interference and the total transparency of a warm high-density plasma slab | It is shown that an overcritical density plasma slab can be totally
transparent to a \textit{p}-polarized obliquely incident electromagnetic wave.
High transparency is achieved due to the interference of the evanescent waves
in the subcritical region. The transmission coefficient has the resonant
character due to the e... | 0607125v1 |
2007-12-17 | Parametric Resonance and Cosmological Gravitational Waves | We investigate the production of gravitational waves due to quantum
fluctuations of the vacuum during the transition from the inflationary to the
radiation-dominated eras of the universe, assuming this transition to be
dominated by the phenomenon of parametric resonance. The energy spectrum of the
gravitational waves i... | 0712.2697v1 |
2008-05-23 | Hydrodynamical Simulations of the Barred Spiral Galaxy NGC 6782 | NGC 6782 is an early-type barred spiral galaxy exhibiting a rich and complex
morphology with multiple ring patterns. To provide a physical understanding of
its structure and kinematical properties, two-dimensional hydrodynamical
simulations have been carried out. Numerical calculations reveal that the
striking features... | 0805.3613v1 |
2008-10-21 | Electromagnetic radiation and resonance phenomena in quantum mechanics | It is demonstrated that, if one remains in the framework of quantum mechanics
taken alone, stationary states (energy eigenstates) are in no way singled out
with respect to nonstationary ones, and moreover the stationary states would be
difficult if possible to realize in practice. Owing to the nonstationary states
any ... | 0810.3773v3 |
2010-09-13 | Ray model and ray-wave correspondence in coupled optical microdisks | We introduce a ray model for coupled optical microdisks, in which we select
coupling-efficient rays among the splitting rays. We investigate the resulting
phase-space structure and report island structures arising from the
ray-coupling between the two microdisks. We find the microdisks's refractive
index to influence t... | 1009.2332v1 |
2010-10-21 | Polarization modulation by tunable electromagnetic metamaterial reflector/absorber | We propose a polarization modulation scheme of electromagnetic (EM) waves
through reflection of a tunable metamaterial reflector/absorber. By
constructing the metamaterial with resonant unit cells coupled by diodes, we
demonstrate that the EM reflections for orthogonal polarized incident waves can
be tuned independentl... | 1010.4378v1 |
2011-08-05 | New experiments on the study of the electric activity of He II at the excitation of second-sound waves | We present the results of new experiments on the observation of the electric
response of superfluid helium (He II) at the excitation of second-sound waves
in it. We used an acoustic resonator with dielectric case, in which the
measurements of the electric and thermal signals were carried on simultaneously
due to the di... | 1108.1272v1 |
2011-10-24 | Water waves over a rough bottom in the shallow water regime | This is a study of the Euler equations for free surface water waves in the
case of varying bathymetry, considering the problem in the shallow water
scaling regime. In the case of rapidly varying periodic bottom boundaries this
is a problem of homogenization theory. In this setting we derive a new model
system of equati... | 1110.5155v1 |
2012-04-10 | Resonant behaviour of an oscillating wave energy converter in a channel | A mathematical model is developed to study the behaviour of an oscillating
wave energy converter in a channel. During recent laboratory tests in a wave
tank, peaks in the hydrodynamic actions on the converter occurred at certain
frequencies of the incident waves. This resonant mechanism is known to be
generated by the ... | 1204.2164v1 |
2013-04-10 | Current Sheets and Collisionless Damping in Kinetic Plasma Turbulence | We present the first study of the formation and dissipation of current sheets
at electron scales in a wave-driven, weakly collisional, 3D kinetic turbulence
simulation. We investigate the relative importance of dissipation associated
with collisionless damping via resonant wave-particle interactions versus
dissipation ... | 1304.2958v2 |
2014-11-16 | Tunneling and mode conversion of fast magnetosonic waves in the magnetospheres of Earth and Mercury | Narrow-band linearly polarized waves, having a resonant structure and a peak
frequency between the local cyclotron frequency of protons and heavy ions, have
been detected in the magnetospheres of Earth and of Mercury. Some of these wave
events have been suggested to be driven by linear mode conversion (MC) of the
fast ... | 1411.4254v1 |
2015-02-06 | Traveling waves for the Mass in Mass model of granular chains | In the present work, we consider the mass in mass (or mass with mass) system
of granular chains, namely a granular chain involving additionally an internal
resonator. For these chains, we rigorously establish that under suitable
"anti-resonance" conditions connecting the mass of the resonator and the speed
of the wave,... | 1502.01995v1 |
2015-03-28 | A Mechanical Analog of the Two-bounce Resonance of Solitary Waves: Modeling and Experiment | We describe a simple mechanical system, a ball rolling along a
specially-designed landscape, that mimics the dynamics of a well known
phenomenon, the two-bounce resonance of solitary wave collisions, that has been
seen in countless numerical simulations but never in the laboratory. We provide
a brief history of the sol... | 1503.08315v1 |
2016-02-15 | Shear to longitudinal mode conversion via second harmonic generation in a two-dimensional microscale granular crystal | Shear to longitudinal mode conversion via second harmonic generation is
studied theoretically and computationally for plane waves in a two-dimensional,
adhesive, hexagonally close-packed microscale granular medium. The model
includes translational and rotational degrees of freedom, as well as normal and
shear contact i... | 1602.04587v1 |
2016-10-04 | The spectrum of light isovector mesons with $C=+1$ from the COMPASS experiment | Based on the largest event sample of diffractively produced
$\pi^-\pi^-\pi^+$, obtained by a pion beam of $190~\rm{GeV/c}$ momentum, the
COMPASS collaboration has performed the most advanced partial wave analysis on
multi-body final states, using the isobar model. The large number of waves
included in the analysis redu... | 1610.01231v1 |
2019-11-25 | Emulating tightly bound electrons in crystalline solids using mechanical waves | Solid state physics deals with systems composed of atoms with strongly bound
electrons. The tunneling probability of each electron is determined by
interactions that typically extend to neighboring sites, as their corresponding
wave amplitudes decay rapidly away from an isolated atomic core. This kind of
description is... | 1911.11272v1 |
2018-11-25 | Electro-opto-mechanical radio-frequency oscillator driven by guided acoustic waves in standard single-mode fiber | An opto-electronic radio-frequency oscillator that is based on forward
scattering by the guided acoustic modes of a standard single-mode optical fiber
is proposed and demonstrated. An optical pump wave is used to stimulate
narrowband, resonant guided acoustic modes, which introduce phase modulation to
a co-propagating ... | 1902.05367v1 |
2019-06-17 | Controlling acoustic waves using magnetoelastic Fano resonances | We propose and analyze theoretically a class of energy-efficient
magneto-elastic devices for analogue signal processing. The signals are carried
by transverse acoustic waves while the bias magnetic field controls their
scattering from a magneto-elastic slab. By tuning the bias field, one can alter
the resonant frequenc... | 1906.07297v2 |
2016-12-20 | Resonant Scattering and Microscopic Model of Spinless Fermi Gases in One-dimensional Optical Lattices | We study the effective Bloch-wave scattering of a spinless Fermi gas in
one-dimensional (1D) optical lattices. By tuning the odd-wave scattering
length, we find multiple resonances of Bloch-waves scattering at the bottom
(and the top) of the lowest band, beyond which an attractive (and a repulsive)
two-body bound state... | 1612.06487v2 |
2018-04-11 | Local sunspot oscillations and umbral dots | Data analysis of sunspot oscillation based on 6-hr SDO run of observation
showed that low frequency (0.2 < ! < 1 mHz) oscillations are local similar to
three and five minute oscillations. The oscillations in the sunspot are
concentrated in cells of a few arcsec, each of which has its own oscillation
spectrum. The analy... | 1804.03874v1 |
2021-08-26 | Molecular orbitals of an elastic artificial benzene | Benzene, a hexagonal molecule with formula C$_6$H$_6$, is one of the most
important aromatic hydrocarbons. Its structure arises from the $sp^{2}$
hybridization from which three in-plane $\sigma$-bonds are formed. A fourth
$\pi$-orbital perpendicular to the molecular plane combines with those arising
from other carbon a... | 2108.12027v1 |
2017-03-23 | Molecular Hydrogen: a benchmark system for Near Threshold Resonances at higher partial waves | Benchmark reactions involving molecular hydrogen, such as H$_2$+D or
H$_2$+Cl, provide the ideal platforms to investigate the effect of Near
Threshold Resonances (NTR) on scattering processes. Due to the small reduced
mass of those systems, shape resonances due to particular partial waves can
provide features at scatte... | 1703.07913v1 |
2019-01-10 | A reaction network approach to the theory of acoustic wave turbulence | We propose a new approach to study the long time dynamics of the wave kinetic
equation in the statistical description of acoustic turbulence. The approach is
based on rewriting the discrete version of the wave kinetic equation in the
form of a chemical reaction network, then employing techniques used to study
the Globa... | 1901.03005v2 |
2019-01-10 | Effect of Inhomogeneous magnetic field on Plasma generation in a low magnetic field helicon discharge | The ionization efficiency of helicon plasma discharge is explored by changing
the low axial magnetic field gradients near the helicon antenna. The highest
plasma density is found for a most possible diverging field near the antenna by
keeping the other operating condition constant. Measurement of axial wave
number toge... | 1901.03015v1 |
2019-08-19 | Linear unstable whistler eigenmodes excited by a finite electron beam | Electron beam-generated whistler waves are widely found in the Earth's space
plasma environment and are intricately involved in a number of phenomena. Here
we study the linear growth of whistler eigenmodes excited by a finite gyrating
electron beam, to facilitate the interpretation of relevant experiments on
beam-gener... | 1908.06961v1 |
2019-09-21 | Resonant absorption of kink oscillations in coronal flux tubes with continuous magnetic twist | There are observational evidences for the existence of twisted magnetic field
in the solar corona. Here, we have investigated resonant damping of the
magnetohydrodynamic (MHD) kink waves in magnetic flux tubes. A realistic model
of the tube with continuous magnetic twist and radially inhomogeneous density
profile has b... | 1909.09787v1 |
2020-05-18 | Generalized uncertainty principle in resonant detectors of gravitational waves | With the direct detection of gravitational waves by advanced LIGO detector, a
new "window" to quantum gravity phenomenology has been opened. At present,
these detectors achieve the sensitivity to detect the length variation ($\delta
L$), $\mathcal{O} \approx 10^{-17}-10^{-21}$ meter. Recently a more stringent
upperboun... | 2005.09454v2 |
2023-01-02 | A multiple scattering formulation for elastic wave propagation in space-time modulated metamaterials | Space-time modulation of material parameters offers new possibilities for
manipulating elastic wave propagation by exploiting time-reversal symmetry
breaking. Here we propose and validate a general framework based on the
multiple scattering theory to model space-time modulated elastic metamaterials,
namely elastic wave... | 2301.00874v1 |
2023-02-21 | Ponderomotive Recoil for Electromagnetic Waves | When waves damp or amplify on resonant particles in a plasma, the nonresonant
particles experience a recoil force that conserves the total momentum between
the particles and electromagnetic fields. This force is important to
understand, as it can completely negate current drive and rotation drive
mechanisms that are pr... | 2302.11029v1 |
2023-08-22 | Resonant detectors of gravitational wave in the linear and quadratic generalized uncertainty principle framework | In this work, we consider a resonant bar detector of gravitational wave in
the generalized uncertainty principle (GUP) framework with linear and quadratic
momentum uncertainties. The phonon modes in these detectors vibrate due to the
interaction with the incoming gravitational wave. In this uncertainty principle
framew... | 2308.11215v1 |
2023-10-10 | A Mössbauer Scheme to Probe Gravitational Waves | Under the local gravitational field, perturbations from high-frequency
gravitational waves can cause a vertical shift of the M\"ossbauer resonance
height. Considering a stationary scheme with the $^{109}$Ag isotope, we
demonstrate that the extremely high precision of M\"ossbauer resonance allows
for competitive gravita... | 2310.06607v1 |
2024-02-01 | Helmholtz quasi-resonances are unstable under most single-signed perturbations of the wave speed | We consider Helmholtz problems with a perturbed wave speed, where the
single-signed perturbation is governed by a parameter $z$. Both the wave speed
and the perturbation are allowed to be discontinuous (modelling a penetrable
obstacle). We show that, for any frequency, for most values of $z$, the
solution operator is p... | 2402.00843v2 |
2024-03-19 | Investigating Millimeter-Wave Thin-film Superconducting Resonators: A Study Using Tunnel Junction Detectors | Investigations into the propagation characteristics, specifically loss and
wave velocity, of superconducting coplanar waveguides and microstrip lines were
conducted at a 2 mm wavelength. This was achieved through the measurement of
on-chip half-wavelength resonators, employing
superconductor-insulator-superconductor tu... | 2403.12342v1 |
2006-08-22 | Propeller activated resonances and the fate of short period cataclysmic variables | We show that the combination of a weak magnetic propeller and accretion disc
resonances can effectively halt accretion in short period cataclysmic variables
for large fractions of their lifetimes. This may help to explain the
discrepancy between the observed and predicted orbital period distributions of
cataclysmic var... | 0608458v1 |
2002-07-02 | Decay of an ultracold fermionic lithium gas near a Feshbach resonance | We studied the magnetic field dependence of the inelastic decay of an
ultracold, optically trapped 6-Li gas of different spin compositions. The spin
mixture of the two lowest hyperfine states showed two decay resonances at 550 G
and 680 G due to two-body collisions, close to the predicted Feshbach resonance
of the elas... | 0207046v3 |
2004-09-02 | ESR spectrometer with a loop-gap resonator for cw and time resolved studies in a superconducting magnet | The design and performance of an electron spin resonance spectrometer
operating at 3 and 9 GHz microwave frequencies combined with a 9 T
superconducting magnet is described. The probehead contains a compact two-loop,
one gap resonator and is embedded in the variable temperature insert of the
magnet enabling measurement... | 0409051v1 |
2001-11-23 | First Measurement of the Double Spin Asymmetry in $\vec{e}\vec{p}\to e' π^+ n$ in the Resonance Region | The double spin asymmetry in the $\vec{e}\vec{p}\to e' \pi^+ n$ reaction has
been measured for the first time in the resonance region for four-momentum
transfer $Q^2=0.35-1.5$ GeV$^2$. Data were taken at Jefferson Lab with the CLAS
detector using a 2.6 GeV polarized electron beam incident on a polarized solid
NH$_3$ ta... | 0111074v2 |
2006-09-08 | Photorecombination of berylliumlike Ti18+: Hyperfine quenching of dielectronic resonances | The photorecombination spectrum of 48Ti18+ was measured employing the merged
electron-ion beams technique at a heavy-ion storage ring. The experimental
electron-ion collision energy range 0-80 eV comprises all dielectronic
recombination (DR) resonances associated with 2s->2p (Delta N =0) core
excitations as well as tri... | 0609072v1 |
2009-08-06 | Resonance as a probe of the electron superconducting gap in BaFe1.9Ni0.1As2 | The discovery of high-transition temperature (high-Tc) superconductivity near
antiferromagnetism in iron arsenides raised the possibility of an
unconventional superconducting mechansim1-8. The observation of clear Fermi
surfaces and nodeless superconducting gaps by angle resolved photoemission9-12
suggests that electro... | 0908.0954v1 |
2010-01-09 | Wide spin resonance with an rf-bunched proton beam | We recently used an rf solenoid to study the widths of rf spin resonances
with both unbunched and bunched beams of 2.1 GeV_c polarized protons stored in
the COSY synchrotron. A map, with unbunched beam at different fixed rf-solenoid
frequencies, showed a very shallow possible depolarization dip at the
resonance. Next w... | 1001.1456v1 |
2011-03-25 | Lasing and transport in a quantum dot-resonator circuit | We study a double quantum dot system coherently coupled to an electromagnetic
resonator. A current through the dot system can create a population inversion
in the dot levels and, within a narrow resonance window, a lasing state in the
resonator. The lasing state correlates with the transport properties. On one
hand, th... | 1103.5051v2 |
2011-07-19 | Quantum resonant effect of the strongly-driven spin-boson model | In this paper we discuss both analytically and numerically the rich quantum
dynamics of the spin-boson model driven by a time-independent field of photon.
Interestingly, we predict a new Rabi oscillation, whose period is inversely
proportional to the driving amplitude. More surprisingly, some nonzero resonant
peaks are... | 1107.3634v1 |
2011-12-22 | Magnetic field induced Fabry-Pérot resonances in helical edge states | We study electronic transport across a helical edge state exposed to a
uniform magnetic ({$\vec B$}) field over a finite length. We show that this
system exhibits Fabry-P\'erot type resonances in electronic transport. The
intrinsic spin anisotropy of the helical edge states allows us to tune these
resonances by changin... | 1112.5400v2 |
2012-12-23 | Sidebands in Optically Detected Magnetic Resonance Signals of Nitrogen Vacancy Centers in Diamond | We study features in the optically detected magnetic resonance (ODMR) signals
associated with negatively charged nitrogen-vacancy (NV) centers coupled to
other paramagnetic impurities in diamond. Our results are important for
understanding ODMR line shapes and for optimization of devices based on NV
centers. We determi... | 1212.5746v3 |
2013-04-29 | The prospects of forming ultracold molecules in $^2Σ$ states by magnetoassociation of alkali-metal atoms with Yb | We explore the feasibility of producing ultracold diatomic molecules with
nonzero electric and magnetic dipole moments by magnetically associating two
atoms, one with zero electron spin and one with nonzero spin. Feshbach
resonances arise through the dependence of the hyperfine coupling on
internuclear distance. We sur... | 1304.7674v1 |
2014-07-18 | Coupling of a locally implanted rare-earth ion ensemble to a superconducting micro-resonator | We demonstrate the coupling of rare-earth ions locally implanted in a
substrate (Gd$^{3+}$ in Al$_{2}$O$_{3}$) to a superconducting NbN
lumped-element micro-resonator. The hybrid device is fabricated by a controlled
ion implantation of rare-earth ions in well-defined micron-sized areas, aligned
to lithographically defi... | 1407.5064v4 |
2016-04-23 | Telling the spin of the di-photon resonance | We argue that the spin of the 750 GeV resonance can be determined at the
99.7% confidence level in the di-photon channel with as few as 10 fb$^{-1}$ of
luminosity. This result is true if the resonance is produced by gluon fusion
(independently of the selection cuts) while an appropriate choice of selection
cuts is need... | 1604.06948v1 |
2017-12-29 | Resonant pinning spectroscopy with spin-vortex pairs | Vortex pairs in magnetic nanopillars with strongly coupled cores and pinning
of one of the cores by a morphological defect, are used to perform resonant
pinning spectroscopy, in which a microwave excitation applied to the nanopillar
produces pinning or depinning of the cores only when the excitation is in
resonance wit... | 1712.10162v2 |
2017-06-13 | Jet-associated resonance spectroscopy | We present a model-independent study aimed at characterizing the nature of
possible resonances in the jet-photon or jet-$Z$ final state at hadron
colliders. Such resonances are expected in many models of compositeness and
would be a clear indication of new physics. At leading order, in the narrow
width approximation, t... | 1706.04242v2 |
2018-04-26 | Resonant reflection of interacting electrons from an impurity in a quantum wire: interplay of Zeeman and spin-orbit effects | A single-channel quantum wire with two well-separated Zeeman subbands and in
the presence of a weak spin-orbit coupling is considered. An impurity level
which is split off the upper subband is degenerate with the continuum of the
lower subband. We show that, when the Fermi level lies in the vicinity of the
impurity lev... | 1804.10283v1 |
2021-08-24 | Higher-order ferromagnetic resonances in periodic arrays of synthetic-antiferromagnet nanodiscs | We investigate spin dynamics in nanodisc arrays of synthetic-antiferromagnets
(SAF) made of Py/NiCu/Py trilayers, where the NiCu spacer undergoes a Curie
transition at about 200 K. The observed ferromagnetic resonance spectra have
three distinct resonance modes at room temperature, which are fully recreated
in our micr... | 2108.10581v1 |
2021-10-25 | Spin relaxation, Josephson effect and Yu-Shiba-Rusinov states in superconducting bilayer graphene | Bilayer graphene has two non-equivalent sublattices and, therefore, the same
adatom impurity can manifest in spectrally distinct ways-sharp versus broad
resonances near the charge neutrality-depending on the sublattice it adsorbs
at. Employing Green's function analytical methods and the numerical Kwant
package we inves... | 2110.12998v2 |
2017-01-31 | Spin anisotropic interactions of lower-polaritons in the vicinity of polaritonic Feshbach resonance | We determine experimentally the spinor interaction constants of
lower-polaritons $\alpha_1$ and $\alpha_2$ using resonant pump-probe
spectroscopy with a spectrally narrow pump pulse. Our experimental findings are
analyzed with the Bogoliubov-like theory and mean-field two channel model based
on the lower-polariton and ... | 1701.09113v2 |
2019-04-01 | Charmed dibaryon resonances in the potential quark model | Charmed dibaryon states with the spin-parity $J^{\pi}=0^+$, $1^+$, and
$2^+$are predicted for the two-body $Y_cN$ ($=\Lambda_c$, $\Sigma_c$, or
$\Sigma^*_c$) systems. We employ the complex scaling method for the coupled
channel Hamiltonian with the $Y_cN$-CTNN potentials, which were proposed in our
previous study. We f... | 1904.00586v1 |
2021-06-22 | Doubly Heavy Tetraquark Resonant States | Spectrum of the doubly heavy tetraquarks, $bb\bar q\bar q$, is studied in a
constituent quark model. Four-body problem is solved in a variational method
where the real scaling technique is used to identify resonant states above the
fall-apart decay thresholds. In addition to the two bound states that were
reported in t... | 2106.11868v1 |
2023-03-28 | Exploring terahertz-scale exchange resonances in synthetic ferrimagnets with ultrashort optically induced spin currents | Using spin currents generated by fs laser pulses, we demonstrate excitation
of GHz ferromagnetic resonance and THz ferrimagnetic exchange resonances in
Co/Gd/Co/Gd multilayers by time-resolved magneto-optic Kerr effect
measurements. Varying the Gd layer thickness allows for a tuning of the
resonance spectrum by manipul... | 2303.15985v2 |
2009-11-13 | Two-resonator circuit QED: Dissipative Theory | We present a theoretical treatment for the dissipative two-resonator circuit
quantum electrodynamics setup referred to as quantum switch. There, switchable
coupling between two superconducting resonators is mediated by a
superconducting qubit operating in the dispersive regime, where the qubit
transition frequency is f... | 0911.2657v4 |
2013-07-24 | A census of transient orbital resonances encountered during binary inspiral | Transient orbital resonances have recently been identified as potentially
important to the inspiral of small bodies into large black holes. These
resonances occur as the inspiral evolves through moments in which two
fundamental orbital frequencies, $\Omega_\theta$ and $\Omega_r$, are in a small
integer ratio to one ano... | 1307.6483v2 |
2017-09-30 | Multiple critical coupling and sensing in a microresonator-waveguide system | We study the optical transmission of a waveguide that is side-coupled to a
high-$Q$ circular microresonator. The coupling is critical if the intrinsic
resonator losses equate the coupling losses to the waveguide. When this
happens, the transmittance of the waveguide displays resonance dips with
maximal depth as the fre... | 1710.00178v1 |
2021-04-07 | Importance of tidal resonances in extreme-mass-ratio inspirals | Extreme mass ratio inspirals (EMRIs) will be important sources for future
space-based gravitational-wave detectors. In recent work, tidal resonances in
binary orbital evolution induced by the tidal field of nearby stars or black
holes have been identified as being potentially significant in the context of
extreme mass-... | 2104.03422v2 |
2020-06-29 | Imaging and Spectroscopy of Domains of the Cellular Membrane by Photothermal-Induced Resonance | We use photothermal induced resonance (PTIR) imaging and spectroscopy, in
resonant and non-resonant mode, to study the cytoplasmic membrane and surface
of intact cells. Non-resonant PTIR images apparently provide rich details of
the cell surface. However we show that non-resonant image contrast does not
arise from the ... | 2006.16306v1 |
2022-08-29 | Multi Spectral Switchable Infra-Red Reflectance Resonances in Highly Subwavelength Partially Oxidized Vanadium Thin Films | Phase transition materials are promising for realization of switchable
optics. In this work, we show reflectance resonances in the near-infrared and
long-wave infrared wavelengths in highly subwavelength partially oxidized
Vanadium thin films. These partially oxidized films consist of a multilayer of
Vanadium dioxide a... | 2208.13458v1 |
2023-05-09 | Direct Measurement of A Spatially Varying Thermal Bath Using Brownian Motion | Micro-mechanical resonator performance is fundamentally limited by the
coupling to a thermal environment. The magnitude of this thermodynamical effect
is typically considered in accordance with a physical temperature, assumed to
be uniform across the resonator's physical span. However, in some
circumstances, e.g. quant... | 2305.05616v1 |
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