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2022-10-17 | Topological spin defects of light | Topological defects are found in a variety of systems, and their existence
are robust under perturbations due to their topological nature. Here we
introduce a new type of topological defects found in electromagnetic waves:
topological spin defects. Such a defect is associated with a point where the
electromagnetic spin... | 2210.08694v1 |
2023-06-08 | Spin entanglement in neutron-proton scattering | In this Letter, I work out spin entanglement properties of neutron-proton
scattering using the exact S-matrix, generalizing previous works based on S
wave. The dependence of spin entanglement on momentum, scattering angle, and
initial spin configuration is investigated for realistic nuclear forces, while
low-energy pro... | 2306.04918v1 |
2018-02-02 | Spin wave emission by spin-orbit torque antennas | We study the generation of propagating spin waves in Ta/CoFeB waveguides by
spin-orbit torque antennas and compare them to conventional inductive antennas.
The spin-orbit torque was generated by a transverse microwave current across
the magnetic waveguide. The detected spin wave signals for an in-plane
magnetization ac... | 1802.00861v2 |
2023-11-09 | Which black hole is spinning? Probing the origin of black-hole spin with gravitational waves | Theoretical studies of angular momentum transport suggest that isolated
stellar-mass black holes are born with negligible dimensionless spin magnitudes
$\chi \lesssim 0.01$. However, recent gravitational-wave observations indicate
$\gtrsim 40\%$ of binary black hole systems contain at least one black hole
with a non-ne... | 2311.05182v3 |
2010-08-05 | Nuclear Feedback in a Single Electron-Charged Quantum Dot under Pulsed Optical Control | Electron spins in quantum dots under coherent control exhibit a number of
novel feedback processes. Here, we present experimental and theoretical
evidence of a feedback process between nuclear spins and a single electron spin
in a single charged InAs quantum dot, controlled by the coherently modified
probability of exc... | 1008.0912v2 |
2017-08-11 | Integrated silicon qubit platform with single-spin addressability, exchange control and robust single-shot singlet-triplet readout | Silicon quantum dot spin qubits provide a promising platform for large-scale
quantum computation because of their compatibility with conventional CMOS
manufacturing and the long coherence times accessible using $^{28}$Si enriched
material. A scalable error-corrected quantum processor, however, will require
control of m... | 1708.03445v2 |
2009-08-26 | Long-term evolution of the spin of Mercury I. Effect of the obliquity and core-mantle friction | The present obliquity of Mercury is very low (less than 0.1 degree), which
led previous studies to always adopt a nearly zero obliquity during the
planet's past evolution. However, the initial orientation of Mercury's rotation
axis is unknown and probably much different than today. As a consequence, we
believe that the... | 0908.3912v1 |
2018-02-26 | Broadband EPR Spectroscopy in Diverse Field Conditions Using Optically Detected Nitrogen-Vacancy Centers in Diamond | Paramagnetic magnetic resonance, a powerful technique for characterizing and
identifying chemical targets, is increasingly used for imaging; however, low
spin polarization at room temperature and moderate magnetic fields poses
challenges for detecting small numbers of spins. In this work, we use
fluorescence from nitro... | 1802.09635v3 |
2016-12-21 | Nuclear magnetic resonance and nuclear spin relaxation in AlAs quantum well probed by ESR | The study of nuclear magnetic resonance and nuclear spin-lattice relaxation
was conducted in an asymmetrically doped to $n\sim1.8\times10^{11}$ cm$^{-2}$
16 nm AlAs quantum well grown in the $[001]$-direction. Dynamic polarization of
nuclear spins due to the hyperfine interaction resulted in the so-called
Overhauser sh... | 1612.07302v1 |
2019-09-17 | Single spin resonance driven by electric modulation of the g factor anisotropy | We address the problem of electronic and nuclear spin resonance of an
individual atom on a surface driven by a scanning tunnelling microscope.
Several mechanisms have been proposed so far, some of them based on the
modulation of exchange and crystal field associated to a piezoelectric
displacement of the adatom driven ... | 1909.07942v1 |
2020-06-22 | Spin relaxation benchmarks and individual qubit addressability for holes in quantum dots | We investigate hole spin relaxation in the single- and multi-hole regime in a
2x2 germanium quantum dot array. We use radiofrequency (rf) charge sensing and
observe Pauli Spin-Blockade (PSB) for every second interdot transition up to
the (1,5)-(0,6) anticrossing, consistent with a standard Fock-Darwin spectrum.
We find... | 2006.12563v1 |
2021-11-21 | Excited-state spin-resonance spectroscopy of V$_\text{B}^-$ defect centers in hexagonal boron nitride | The recently discovered spin-active boron vacancy (V$_\text{B}^-$) defect
center in hexagonal boron nitride (hBN) has high contrast optically-detected
magnetic resonance (ODMR) at room-temperature, with a spin-triplet ground-state
that shows promise as a quantum sensor. Here we report temperature-dependent
ODMR spectro... | 2111.10855v1 |
2022-10-10 | Low-energy M1 states in deformed nuclei: spin-scissors or spin-flip? | The low-energy $M1$ states in deformed $^{164}$Dy and spherical $^{58}$Ni are
explored in the framework of fully self-consistent Quasiparticle Random-Phase
Approximation (QRPA) with various Skyrme forces. The main attention is paid to
orbital and spin $M1$ excitations. The obtained results are compared with the
predict... | 2210.04701v2 |
2017-08-06 | Comparative analysis of magnetic resonance in the polaron pair recombination and the triplet exciton-polaron quenching models | We present a comparative theoretical study of magnetic resonance within the
polaron pair recombination (PPR) and the triplet exciton-polaron quenching
(TPQ) models. Both models have been invoked to interpret the photoluminescence
detected magnetic resonance (PLDMR) in $\pi$-conjugated materials. We show that
resonance ... | 1708.01917v1 |
2018-01-11 | Analyticity of Resonances and Eigenvalues and Spectral Properties of the massless Spin-Boson Model | We extend the method of multiscale analysis for resonances introduced in [5]
in order to infer analytic properties of resonances and eigenvalues (and their
eigenprojections) as well as estimates for the localization of the spectrum of
dilated Hamiltonians and norm-bounds for the corresponding resolvent operators,
in ne... | 1801.04021v2 |
1998-01-07 | Resonant Raman scattering by collective modes of the one-dimensional electron gas | We show that the low-energy peak in the polarized resonant Raman spectra of
quantum wires, which is commonly associated with ``single particle
excitations'', can be interpreted as signature of intra-band collective spin
excitations. A broad maximum in the resonant depolarized spectra is predicted
to exist above the fre... | 9801058v1 |
2001-08-04 | Magnetic Field Pinning of a Dynamic Electron-Spin-Resonance Line in a GaAs/AlGaAs Heterostructure | Electrically detected electron spin resonance (ESR) is used to study the
hyperfine interaction of the two-dimensional electrons and the nuclei of the
host lattice in a GaAs/AlGaAs heterostructure. Under the microwave and radio-
frequency double excitations, we have observed that the ESR line can be pinned
in a very nar... | 0108080v1 |
2002-09-11 | Magnetic Anisotropy in La_0.8Sr_0.2MnO_3: Electron Spin Resonance | We report on Ferromagnetic-Resonance experiments in a single crystal of
La_0.8Sr_0.2MnO_3 in the temperature range from 4 to 300 K. The observed
anisotropy of the resonance line changes on crossing the transition from the
orthorhombic O-phase to the rhombohedral R-phase at T~100 K and indicates a
reorientation of the s... | 0209257v1 |
2004-11-12 | Kondo resonance for orbitally degenerate systems | Formation of the Kondo state in general two-band Anderson model has been
investigated within the numerical renormalization group (NRG) calculations. The
Abrikosov-Suhl resonance is essentially asymmetric for the model with one
electron per impurity (quarter filling case) in contrast with the one-band
case. An external ... | 0411323v1 |
2005-01-26 | High-field optically detected nuclear magnetic resonance in GaAs | A method for high-field optically detected nuclear magnetic resonance (ODNMR)
is developed sensitive to 10**8 nuclei. Nuclear spin transitions are induced
using a radio frequency coil and detected through Faraday rotation
spectroscopy. Unlike conventional ODNMR, which is limited to low fields and
relies on the measurem... | 0501652v1 |
2006-02-04 | Spin-transfer-driven ferromagnetic resonance of individual nanomagnets | We demonstrate a technique that enables ferromagnetic resonance (FMR)
measurements of the normal modes for magnetic excitations in individual
nanoscale ferromagnets, smaller in volume by a factor of 1000 than can be
probed by other methods. The measured peak shapes indicate two regimes of
response: simple FMR and phase... | 0602105v1 |
1995-08-18 | Quark Model Explanation of the $N^*\to Nη$ Branching Ratios | The constituent quark model can explain the strong selectivity of the $N\eta$
decay branching ratios of the nucleon resonances if the fine structure
interaction between the constituent quarks is described in terms of Goldstone
boson exchange. This chiral quark model predicts that the resonances $N(1535)$,
$N(1710)$, $\... | 9508327v1 |
1998-01-01 | Perturbative Duality in the Resonance Spin Structure Functions | We investigate the relations between the spin structure functions in the
scaling and resonance regions. We examine the possible duality between the two,
and draw inferences for the behavior of the asymmetry A_1 at large x. Finally,
we point out the importance of additional polarized structure function data in
the reson... | 9801205v1 |
2005-12-27 | The Nucleon and Roper Resonance in a Chiral Quark Diquark Model | A description of the nucleon and Roper resonance in a quark-diquark approach
is presented. We show that two states with the quantum number of the nucleon
can appear in the ground state of the spatial configuration, when there are two
types of diquarks: scalar-isoscalar and axial-vector-isovector diquarks. The
mass diff... | 0512336v1 |
2001-03-03 | Control of Non-Resonant Effects in a Nuclear Spin Quantum Computer with a Large Number of Qubits | We discuss how to simulate simple quantum logic operations with a large
number of qubits. These simulations are needed for experimental testing of
scalable solid-state quantum computers. Quantum logic for remote qubits is
simulated in a spin chain. Analytical estimates are presented for possible
correlated errors cause... | 0103007v1 |
2007-07-04 | Hyperfine-mediated gate-driven electron spin resonance | An all-electrical spin resonance effect in a GaAs few-electron double quantum
dot is investigated experimentally and theoretically. The magnetic field
dependence and absence of associated Rabi oscillations are consistent with a
novel hyperfine mechanism. The resonant frequency is sensitive to the
instantaneous hyperfin... | 0707.0557v2 |
2007-07-30 | Comments on ``Spin Connection Resonance in Gravitational General Relativity'' | We comment on a recent article of M.W.Evans, Acta Physica Polonica B38 (2007)
2211. We point out that the equations underlying Evans' theory are highly
problematic. Moreover, we demonstrate that the so-called ``spin connection
resonance'', predicted by Evans, cannot be derived from the equation he used.
We provide an e... | 0707.4433v2 |
2008-08-23 | Spin-isospin resonances: A self-consistent covariant description | For the first time a fully self-consistent charge-exchange relativistic RPA
based on the relativistic Hartree-Fock (RHF) approach is established. The
self-consistency is verified by the so-called isobaric analog state (IAS)
check. The excitation properties and the non-energy weighted sum rules of two
important charge-e... | 0808.3159v1 |
2009-07-10 | Measurement of Conduction Electron Polarization Via the Pairing Resonance | We show that the pairing resonance in the Pauli-limited normal state of
ultra-thin superconducting Al films provides a spin-resolved probe of
conduction electron polarization in thin magnetic films. A
superconductor-insulator-ferromagnet tunneling junction is used to measure the
density of states in supercritical paral... | 0907.1800v1 |
2009-07-12 | Electrically detected magnetic resonance using radio-frequency reflectometry | The authors demonstrate readout of electrically detected magnetic resonance
at radio frequencies by means of an LCR tank circuit. Applied to a silicon
field-effect transistor at milli-kelvin temperatures, this method shows a
25-fold increased signal-to-noise ratio of the conduction band electron spin
resonance and a hi... | 0907.2022v1 |
2009-08-30 | Extraction of an Entanglement by Repetition of the Resonant Transmission of an Ancilla Qubit | A scheme for the extraction of entanglement in two noninteracting qubits
(spins) is proposed. The idea is to make use of resonant transmission of
ancilla qubit through the two fixed qubits, controlled by the entanglement in
the scatterers. Repetition of the resonant transmission extracts the singlet
state in the target... | 0908.4377v2 |
2010-11-23 | Electric-field Manipulation of the Lande' g Tensor of Holes in In0.5Ga0.5As/GaAs Self-assembled Quantum Dots | The effect of an electric field on spin precession in In0.5Ga0.5As/GaAs
self-assembled quantum dots is calculated using multiband real-space
envelope-function theory. The dependence of the Lande' g tensor on electric
fields should permit high-frequency g tensor modulation resonance, as well as
direct, nonresonant elect... | 1011.5014v1 |
2011-03-25 | Temperature dependence of spin resonance in cobalt substituted NiZnCu ferrites | Cobalt substitutions were investigated in Ni0.4Zn0.4Cu0.2Fe2O4 ferrites,
initial complex permeability was then measured from 1 MHz to 1 GHz. It appears
that cobalt substitution led to a decrease in the permeability and an increase
in the \mus\timesfr factor. As well, it gave to the permeability spectrum a
sharp resonan... | 1103.5024v1 |
2011-08-09 | Magnetic resonance from the interplay of frustration and superconductivity | Motivated by the iron-based superconductors, we develop a self-consistent
electronic theory for the itinerant spin excitations in the regime of
coexistence of the antiferromagnetic stripe order with wavevector ${\bf Q}_{1}
= (\pi,0)$ and $s^{+-}$ superconductivity. The onset of superconductivity leads
to the appearance... | 1108.2046v1 |
2011-08-16 | Nanomechanical detection of nuclear magnetic resonance using a silicon nanowire oscillator | We report the use of a silicon nanowire mechanical oscillator as a
low-temperature nuclear magnetic resonance force sensor to detect the
statistical polarization of 1H spins in polystyrene. Under operating
conditions, the nanowire experienced negligible surface-induced dissipation and
exhibited a nearly thermally-limit... | 1108.3263v1 |
2011-11-22 | Lock-in detection for pulsed electrically detected magnetic resonance | We show that in pulsed electrically detected magnetic resonance (pEDMR)
signal modulation in combination with a lock-in detection scheme can reduce the
low-frequency noise level by one order of magnitude and in addition removes the
microwave-induced non-resonant background. This is exemplarily demonstrated for
spin-ech... | 1111.5149v1 |
2012-10-18 | Few-Qubit Magnetic Resonance Quantum Information Processors: Simulating Chemistry and Physics | We review recent progress made in quantum information processing (QIP) which
can be applied in the simulation of quantum systems and chemical phenomena. The
review is focused on quantum algorithms which are useful for quantum simulation
of chemistry and advances in nuclear magnetic resonance (NMR) and electron spin
res... | 1210.4994v1 |
2014-11-12 | Neutrino-pair bremsstrahlung from nucleon-$α$ versus nucleon-nucleon scattering | We study the impact of the nucleon-$\alpha$ P-wave resonances on
neutrino-pair bremsstrahlung. Because of the non-central spin-orbit
interaction, these resonances lead to an enhanced contribution to the nucleon
spin structure factor for temperatures $T \lesssim 4$ MeV. If the
$\alpha$-particle fraction is significant a... | 1411.3266v1 |
2014-12-22 | Accelerated nanoscale magnetic resonance imaging through phase multiplexing | We report a method for accelerated nanoscale nuclear magnetic resonance
imaging by detecting several signals in parallel. Our technique relies on phase
multiplexing, where the signals from different nuclear spin ensembles are
encoded in the phase of an ultrasensitive magnetic detector. We demonstrate
this technique by ... | 1412.6914v2 |
2015-05-01 | Ising incommensurate spin resonance of CeCoIn$_{5}$: a dynamical precursor of the Q-phase | It is shown by detailed inelastic neutron scattering experiments that the
gapped collective magnetic excitation of the unconventional superconductor
CeCoIn$_{5}$, the spin resonance mode, is incommensurate and that the
corresponding fluctuations are of Ising nature. The incommensurate peak
position of these fluctuation... | 1505.00206v1 |
2015-06-19 | Coherent manipulation of a Majorana qubit by a mechanical resonator | We propose a hybrid system composed of a Majorana qubit and a nanomechanical
resonator, implemented by a spin-orbit-coupled superconducting nanowire, using
a set of static and oscillating ferromagnetic gates. The ferromagnetic gates
induce Majorana bound states in the nanowire, which hybridize and constitute a
Majorana... | 1506.05879v2 |
2018-10-05 | Spin gap in a quasi-1D S=1/2 antiferromagnet K2CuSO4Cl2 | Electron spin resonance experiments in the quasi-1D S=1/2 antiferromagnet
K$_2$CuSO$_4$Cl$_2$ reveal opening of a gap in absence of magnetic ordering, as
well as an anisotropic shift of the resonance magnetic field. These features of
magnetic excitation spectrum are explained by a crossover between a gapped
spinon-type... | 1810.02675v2 |
2016-12-13 | Two-body relaxation of spin-polarized fermions in reduced dimensionalities near a p-wave Feshbach resonance | We study inelastic two-body relaxation in a spin-polarized ultracold Fermi
gas in the presence of a p-wave Feshbach resonance. It is shown that in reduced
dimensionalities, especially in the quasi-one-dimensional case, the enhancement
of the inelastic rate constant on approach to the resonance is strongly
suppressed co... | 1612.04107v3 |
2017-01-15 | Side resonances and metastable excited state of NV- center in diamond | We discuss the side resonances of optically detected magnetic resonance in
diamond crystal and propose the new approach to the calculation of hyperfine
interaction in composed system, consisted of negatively charged
nitrogen-vacancy NV- center and nearby 13C nuclear spin. Energy levels and spin
states are obtained by n... | 1701.04097v1 |
2023-04-05 | Zero field magnetic resonance spectroscopy based on Nitrogen-vacancy centers | We propose a scheme to have zero field magnetic resonance spectroscopy based
on a nitrogen-vacancy center and investigate the new applications in which
magnetic bias field might disturb the system under investigation. Continual
driving with circularly polarized microwave fields is used to selectively
address one spin s... | 2304.02179v1 |
2023-12-01 | Optical chiral properties in a large resonant hybrid photonic cluster | Optical chiral properties of a resonant hybrid photonic crystal (RHPC) are
computed taking into account spin-orbit effect due to light-hole excitons
perfectly confined in 2D quantum wells. The trends of the optical activity,
expressed as a ratio between the absorption intensities of the z and xy
light-hole polaritons, ... | 2312.00669v2 |
2023-11-20 | Evolution of internal gravity waves in meso-scale eddies | We investigate the effect of wave-eddy interaction and dissipation of
internal gravity waves propagating in a coherent meso-scale eddy simulated
using a novel numerical model called the Internal Wave Energy Model based on
the six-dimensional radiative transfer equation. We use an idealized mean flow
structure and strat... | 2311.11916v1 |
2006-06-28 | Influence of Random Bulk Inhomogeneities on Quasi-Optical Cavity Resonator Spectrum | We suggest the statistical spectral theory of oscillations in quasi-optical
cavity resonator filled with random inhomogeneities. It is shown that
inhomogeneities in the resonator result in intermode scattering leading to the
shift and broadening of spectral lines. The shift and broadening of each line
essentially depen... | 0606740v1 |
2014-06-11 | Tunable coupled-mode dispersion compensation and its application to on-chip resonant four-wave mixing | We propose and demonstrate localized mode coupling as a viable dispersion
engineering technique for phase-matched resonant four-wave mixing (FWM). We
demonstrate a dual-cavity resonant structure that employs coupling-induced
frequency splitting at one of three resonances to compensate for cavity
dispersion, enabling ph... | 1406.2750v2 |
2021-01-25 | Kerr-Nonlinearity-Induced Mode-Splitting in Optical Microresonators | The Kerr effect in optical microresonators plays an important role for
integrated photonic devices and enables third harmonic generation, four-wave
mixing, and the generation of microresonator-based frequency combs. Here we
experimentally demonstrate that the Kerr nonlinearity can split ultra-high-Q
microresonator reso... | 2101.10170v1 |
2023-09-27 | Mean-Motion Resonances With Interfering Density Waves | In this work, we study the dynamics of two less massive objects moving around
a central massive object, which are all embedded within a thin accretion disc.
In addition to the gravitational interaction between these objects, the
disc-object interaction is also crucial for describing the long-term dynamics
of the multi-... | 2309.15694v2 |
2024-03-15 | Exact time-evolving scattering states in open quantum-dot systems with an interaction: Discovery of time-evolving resonant states | We study exact time-evolving many-electron states of an open double
quantum-dot system with an interdot Coulomb interaction. A systematic
construction of the time-evolving states for arbitrary initial conditions is
proposed. For any initial states of one- and two-electron plane waves on the
electrical leads, we obtain ... | 2403.10251v1 |
2008-05-22 | High-statistics measurement of neutral-pion pair production in two-photon collisions | We present a high-statistics measurement of differential cross sections and
the total cross section for the process gamma gamma -> pi^0 pi^0 in the
kinematic range 0.6 GeV <= W <= 4.0 GeV and |cos theta*| <= 0.8, where W and
theta* are the energy and pion scattering angle, respectively, in the gamma
gamma center-of-mas... | 0805.3387v2 |
2009-04-16 | Collision of Multimode Dromions and a Firewall in the Two Component Long Wave Short Wave Resonance Interaction Equation | In this paper, we investigate the two component long wave short wave
resonance interaction (2CLSRI) equation and show that it admits the Painleve
property. We then suitably exploit the recently developed truncated Painleve
approach to generate exponentially localized solutions for the short wave
components $S^{(1)}$ an... | 0904.2434v1 |
2015-03-03 | Acoustic wave front reversal in a three-phase media | Acoustic wave front conjugation is studied in a sandy marine sediment that
contains air bubbles in its fluid fraction. The considered phase conjugation is
a four-wave nonlinear parametric sound interaction process caused by nonlinear
bubble oscillations which are known to be dominant in acoustic nonlinear
interactions ... | 1503.00869v2 |
2017-09-11 | Comparison of damping mechanisms for transverse waves in solar coronal loops | We present a method to assess the plausibility of alternative mechanisms to
explain the damping of magnetohydrodynamic (MHD) transverse waves in solar
coronal loops. The considered mechanisms are resonant absorption of kink waves
in the Alfv\'en continuum, phase-mixing of Alfv\'en waves, and wave leakage.
Our methods m... | 1709.03347v1 |
2019-06-18 | Axisymmetric internal wave transmission and resonance in non-linear stratifications | To date, the influence of non-linear stratifications and two layer
stratifications on internal wave propagation has been studied for
two-dimensional wave fields in a cartesian geometry. Here, we use a novel wave
generator configuration to investigate transmission in non-linear
stratifications of axisymmetric internal w... | 1906.07844v1 |
2019-03-24 | Non-interacting gravity waves on the surface of a deep fluid | We study the interaction of gravity waves on the surface of an infinitely
deep ideal fluid. Starting from Zakharov's variational formulation for water
waves we derive an expansion of the Hamiltonian to an arbitrary order, in a
manner that avoids a laborious series reversion associated with expressing the
velocity poten... | 1903.10854v1 |
2020-03-09 | Total reflection of two guided waves for embedded trapped modes | To investigate the mechanism of wave trapping, acoustic embedded trapped
modes associated with two-resonant-mode interference in two-dimensional
duct-cavity structures are calculated by the feedback-loop closure principle,
which allows us to analyse the travelling modes that construct the trapped
modes. The exact two c... | 2003.04172v1 |
2019-01-17 | Laboratory investigations on the resonant feature of `dead water' phenomenon | Interfacial internal wave excitation in the wake of towed ships is studied
experimentally in a quasi-two layer fluid. At a critical `resonant' towing
velocity, whose value depends on the structure of the vertical density profile,
the amplitude of the internal wave train following the ship reaches a maximum,
in unison w... | 1901.05931v1 |
2021-03-16 | Elastic Bound State in the Continuum with Perfect Mode Conversion | The partial or complete confinement of waves in an open system is omnipresent
in nature and in wave-based materials and technology. Here, we theoretically
analyze and experimentally observe the formation of a trapped mode with perfect
mode conversion (TMPC) between flexural waves and longitudinal waves, by
achieving a ... | 2103.09006v1 |
2024-01-15 | Real-time imaging of standing-wave patterns in microresonators | Real-time characterization of microresonator dynamics is important for many
applications. In particular it is critical for near-field sensing and
understanding light-matter interactions. Here, we report camera-facilitated
imaging and analysis of standing wave patterns in optical ring resonators. The
standing wave patte... | 2401.07670v1 |
2005-12-09 | Time Minimal Trajectories for a Spin 1/2 Particle in a Magnetic Field | In this paper we consider the minimum time population transfer problem for
the $z$-component of the spin of a (spin 1/2) particle driven by a magnetic
field, controlled along the x axis, with bounded amplitude. On the Bloch sphere
(i.e. after a suitable Hopf projection), this problem can be attacked with
techniques of ... | 0512074v2 |
2018-09-19 | Singlet $s^\pm$-wave pairing in quasi-one-dimensional ACr$_3$As$_3$ (A=K, Rb, Cs) superconductors | The recent discovery of quasi-one-dimensional Chromium-based
superconductivity has generated much excitement. We study in this work the
superconducting instabilities of a representative compound, the newly
synthesized KCr$_3$As$_3$ superconductor. Based on inputs from density
functional theory calculations, we first co... | 1809.07117v3 |
2018-12-17 | Gravitational waveforms from SpEC simulations : neutron star-neutron star and low-mass black hole-neutron star binaries | Gravitational waveforms from numerical simulations are a critical tool to
test and analytically calibrate the waveform models used to study the
properties of merging compact objects. In this paper, we present a series of
high-accuracy waveforms produced with the SpEC code for systems involving at
least one neutron star... | 1812.06988v1 |
2020-09-25 | Strain-engineering of the charge and spin-orbital interactions in Sr2IrO4 | In the high spin-orbit coupled Sr2IrO4, the high sensitivity of the ground
state to the details of the local lattice structure shows a large potential for
the manipulation of the functional properties by inducing local lattice
distortions. We use epitaxial strain to modify the Ir-O bond geometry in
Sr2IrO4 and perform ... | 2009.12262v1 |
2021-05-18 | Computational Micromagnetics based on Normal Modes: bridging the gap between macrospin and full spatial discretization | The Landau-Lifshitz equation governing magnetization dynamics is written in
terms of the amplitudes of normal modes associated with the micromagnetic
system's appropriate ground state. This results in a system of nonlinear
ordinary differential equations (ODEs), the right-hand side of which can be
expressed as the sum ... | 2105.08829v2 |
2022-07-29 | Non-linear magnons and exchange Hamiltonians of delafossite proximate quantum spin liquids | Quantum spin liquids (QSL) are theoretical states of matter with long-range
entanglement and exotic quasiparticles. However, they generally elude
quantitative theory, rendering their underlying phases mysterious and hampering
efforts to identify experimental QSL states. Here we study triangular lattice
resonating valen... | 2207.14785v3 |
2024-04-02 | Spin and bond-charge excitation spectra in correlated electron systems near antiferromagnetic phase | Magnetic and bond-charge interactions can arise from the same microscopic
interaction. Motivated by this observation, we compute magnetic and bond-charge
excitation spectra on an equal footing by introducing a simple effective model
on a square lattice, which describes antiferromagnetic and d-wave
superconducting phase... | 2404.02219v1 |
2015-08-31 | Interaction driven exotic quantum phases in spin-orbit coupled spin$-1$ bosons | We study the interplay between large-spin, spin-orbit coupling, and
superfluidity for bosons in a two dimensional optical lattice, focusing on the
spin-1 spin-orbit coupled system recently realized at the Joint Quantum
Institute [Campbell et. al., arXiv:1501.05984]. We find a rich quantum phase
diagram, where, in addit... | 1509.00005v2 |
2021-09-29 | Prospects for measuring off-axis spins of binary black holes with Plus-era gravitational-wave detectors | The mass and spin properties of binary black holes (BBHs) inferred from their
gravitational-wave signatures reveal important clues about how these systems
form. BBHs originating from isolated binary evolution are expected to have
spins preferentially aligned with their orbital angular momentum, whereas there
is no such... | 2109.14571v2 |
2023-05-15 | Tidal Spin-up of Black Hole Progenitor Stars | Gravitational wave observations indicate the existence of merging black holes
(BHs) with high spin ($a\gtrsim0.3$), whose formation pathways are still an
open question. A possible way to form those binaries is through the tidal
spin-up of a Wolf-Rayet (WR) star by its BH companion. In this work, we
investigate this sce... | 2305.08356v2 |
2024-04-06 | Spin-charge-lattice coupling across the charge density wave transition in a Kagome lattice antiferromagnet | Understanding spin and lattice excitations in a metallic magnetic ordered
system form the basis to unveil the magnetic and lattice exchange couplings and
their interactions with itinerant electrons. Kagome lattice antiferromagnet
FeGe is interesting because it displays rare charge density wave (CDW) deep
inside the ant... | 2404.04459v1 |
2003-02-11 | Resonant interaction between gravitational waves, electromagnetic waves and plasma flows | In magnetized plasmas gravitational and electromagnetic waves may interact
coherently and exchange energy between themselves and with plasma flows. We
derive the wave interaction equations for these processes in the case of waves
propagating perpendicular or parallel to the plasma background magnetic field.
In the latt... | 0302039v2 |
2010-05-12 | Observation of nonlinear dispersion relation and spatial statistics of wave turbulence on the surface of a fluid | We report experiments on gravity-capillary wave turbulence on the surface of
a fluid. The wave amplitudes are measured simultaneously in time and space
using an optical method. The full space-time power spectrum shows that the wave
energy is localized on several branches in the wave-vector-frequency space. The
number o... | 1005.2000v2 |
2013-01-07 | Electromagnetic waves destabilized by runaway electrons in near-critical electric fields | Runaway electron distributions are strongly anisotropic in velocity space.
This anisotropy is a source of free energy that may destabilize electromagnetic
waves through a resonant interaction between the waves and the energetic
electrons. In this work we investigate the high-frequency electromagnetic waves
that are des... | 1301.1250v1 |
2015-04-10 | Topological water wave state in a one-dimensional structure | Topological concepts have been introduced into electronic, photonic, and
phononic systems, but have not been studied in surface-water-wave systems. Here
we study a one-dimensional periodic resonant surface-water-wave system and
demonstrate its topological transition. By selecting three different water
depths, we can co... | 1504.02655v2 |
2019-11-28 | Generalized modulation theory for strongly nonlinear gravity waves in a compressible atmosphere | This study investigates nonlinear gravity waves in the compressible
atmosphere from the Earth's surface to the deep atmosphere. These waves are
effectively described by Grimshaw's dissipative modulation equations which
provide the basis for finding stationary solutions such as mountain lee waves
and testing their stabi... | 1911.12669v2 |
2017-06-18 | Extreme driven ion acoustic waves | Excitation of large amplitude strongly nonlinear ion acoustic waves from a
trivial equilibrium by a chirped frequency drive is discussed. Under certain
conditions, after passage through the linear resonance in this system, the
nonlinearity and the variation of parameters work in tandem to preserve the
phase-locking wit... | 1706.05660v1 |
2020-09-11 | Free vibration and wave power reflection in Mindlin rectangular plates via exact wave propagation approach | Reflection, propagation and energy analysis are crucially important in
designing structures, especially plates. A thick plate is considered based on
first order shear deformation theory. Wave Propagation Method (WPM) is employed
to exactly derive resonant frequencies and wave power reflection from different
classical b... | 2009.05597v1 |
2019-12-19 | Heavy Ion Acceleration by Super-Alfvenic Waves | A generation mechanism of super Alfv\'{e}nic (SPA) waves in multi-ion species
plasma is proposed and the associated heavy ion acceleration process is
discussed. The SPA waves are thought to play important roles in particle
acceleration since they have large wave electric field because of their high
phase velocity. It i... | 2001.02538v1 |
2022-06-03 | Conservation of Total Wave Action in the Expanding Solar Wind | The conservation of wave action in moving plasmas has been well-known for
over half a century. However, wave action is not conserved when multiple wave
modes propagate and coexist close to degeneration condition (Sound speed equals
Alfv\'en speed, i.e. plasma $\beta \sim 1$). Here we show that the violation of
conserva... | 2206.01809v1 |
2022-08-01 | Dimensionless solutions of the wave equation | Plane waves are regarded as the general solution of the wave equation.
However the plane wave expansion of standing waves by means of complex phasors
leads to a theory in which the time coordinate does not receive the same
treatment as the three space coordinates. An equal treatment is possible using
our alternative ap... | 2208.00551v1 |
2023-10-03 | Observations of rogue seas in the Southern Ocean | We report direct observations of surface waves from a stereo camera system
along with concurrent measurements of wind speed during an expedition across
the Southern Ocean in the austral winter aboard South African icebreaker
S.A.~Agulhas~II. Records include water surface elevation across a range of wave
conditions, spa... | 2310.01841v2 |
2024-04-12 | Non-uniform wave momentum bandgap in biaxial anisotropic photonic time crystals | Photonic time crystals (PTCs) host momentum bandgaps enabling intriguing
non-resonant light amplification in propagating waves, but opening substantial
bandgaps demands refractive index changes too extreme for conventional
nonlinear optics. Here, we introduce momentum bandgaps for non-uniform waves,
including evanescen... | 2404.08206v1 |
2010-10-29 | Influence of positional correlations on the propagation of waves in a complex medium with polydisperse resonant scatterers | We present experimental results on a model system for studying wave
propagation in a complex medium exhibiting low frequency resonances. These
experiments enable us to investigate a fundamental question that is relevant
for many materials, such as metamaterials, where low-frequency scattering
resonances strongly influe... | 1010.6243v2 |
2018-12-19 | Quick and repeatable shear modulus measurement based on torsional resonance and torsional wave propagation using a piezoelectric torsional transducer | Shear modulus is one of the fundamental mechanical properties of materials,
while its quick and accurate measurement is still a challenge. Here we proposed
two methods for shear modulus measurement based on torsional resonance and
torsional wave propagation using a same piezoelectric torsional transducer.
Firstly, the ... | 1812.07784v1 |
2003-03-19 | Wave function mapping conditions in Open Quantum Dots structures | We discuss the minimal conditions for wave function spectroscopy, in which
resonant tunneling is the measurement tool. Two systems are addressed: resonant
tunneling diodes, as a toy model, and open quantum dots. The toy model is used
to analyze the crucial tunning between the necessary resolution in
current-voltage cha... | 0303399v1 |
2008-01-02 | Resonant Plasma Wave Growth and Monoenergetic Electron Beam Production using Collinear High-Intensity Ultrashort Laser Pulses | The resonant generation of relativistic plasma waves and plasma wave guiding
by two co-propagating laser pulses has been studied. By proper timing between
guiding and driver pulses, a resonant interaction occurs, which generates a
high-amplitude plasma wave over a longer length than is possible with either of
the laser... | 0801.0410v1 |
2008-08-23 | Nonlinear theory of resonant slow waves in anisotropic and dispersive plasmas | The solar corona is a typical example of a plasma with strongly anisotropic
transport processes. The main dissipative mechanisms in the solar corona acting
on slow magnetoacoustic waves are the anisotropic thermal conductivity and
viscosity. Ballai et al. [Phys. Plasmas 5, 252 (1998)] developed the nonlinear
theory of ... | 0808.3193v1 |
2012-05-24 | Resonant acousto-optics in the terahertz range: TO-phonon polaritons driven by an ultrasonic wave | The resonant acousto-optic effect is studied both analytically and
numerically in the terahertz range where the transverse-optical (TO) phonons
play the role of a mediator which strongly couples the ultrasound and light
fields. A propagating acoustic wave interacts with the TO phonons via
anharmonic channels and opens ... | 1205.5432v1 |
2013-06-26 | Gravito-electromagnetic resonances in Minkowski space | We consider the interaction between gravitational and electromagnetic
radiation propagating on a Minkowski background and look into the effects of
the former upon the latter. Not surprisingly, the coupling between these two
sources leads to gravitationally driven electromagnetic waves. At the second
perturbative level,... | 1306.6227v3 |
2015-11-17 | Resonant X-ray Emission Spectroscopy With a Standing Wave Excitation | The Borrmann effect is the anomalous transmission of x rays in perfect
crystals under diffraction conditions. It arises from the interference of the
incident and diffracted waves, which creates a standing wave with nodes at
strongly absorbing atoms. Dipolar absorption of x rays is thus diminished,
which makes the cryst... | 1511.05354v2 |
2017-11-07 | Asymmetric Nonlinear System is Not sufficient for Non-Reciprocal Quantum Wave Diode | We demonstrate symmetric wave propagations in asymmetric nonlinear quantum
systems. By solving the nonlinear Sch\"ordinger equation, we first analytically
prove the existence of symmetric transmission in asymmetric systems with a
single nonlinear delta-function interface. We then point out that a finite
width of the no... | 1711.02304v1 |
2020-02-27 | Near-resonant instability of geostrophic modes: beyond Greenspan's theorem | We explore the near-resonant interaction of inertial waves with geostrophic
modes in rotating fluids via numerical and theoretical analysis. When a single
inertial wave is imposed, we find that some geostrophic modes are unstable
above a threshold value of the Rossby number $kRo$ based on the wavenumber and
wave amplit... | 2002.12425v2 |
2020-12-25 | Topological phases and bulk-edge correspondence of magnetized cold plasmas | Plasmas have been recently studied as topological materials. However, a
comprehensive picture of topological phases and topological phase transitions
in cold magnetized plasmas is still missing. Here we systematically map out all
the topological phases and establish the bulk-edge correspondence in cold
magnetized plasm... | 2012.13611v2 |
2022-04-27 | Alfvén waves: To the 80th anniversary of discovery | The paper is dedicated to the anniversary of the discovery of Alfv\'en waves.
The concept of Alfv\'en waves has played an outstanding role in the formation
and development of cosmical electrodynamics. A distinctive feature of Alfv\'en
waves is that at each point in space the group velocity vector and the external
magne... | 2204.12700v1 |
2017-07-22 | Transverse spinning of light with globally unique handedness | Access to the transverse spin of light has unlocked new regimes in
topological photonics and optomechanics. To achieve the transverse spin of
nonzero longitudinal fields, various platforms that derive transversely
confined waves based on focusing, interference, or evanescent waves have been
suggested. Nonetheless, beca... | 1707.07099v1 |
2020-03-02 | Higher-order Quantum Spin Hall Effect of Light | Band topology and related spin (or pseudo-spin) physics of photons provide us
with a new dimension for manipulating light, which is potentially useful for
information communication and data storage. Especially, the quantum spin Hall
effect of light, where electromagnetic waves propagate along surfaces of
samples with s... | 2003.00933v1 |
1996-02-28 | Static and Dynamic Spin Structure Factors of Frustrated Heisenberg Antiferromagnet | Using the modified spin-wave theory we calculate static and dynamic spin
structure factors in spin-liquid state of the J1-J2 model. The spectrum of
excitations in the vector channel is discussed. The developed technique can
also be applied to the t-J model describing copper oxide superconductors. | 9602150v1 |
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