publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2012-11-11 | Channel coupling effect and important role of imaginary part of coupling potential for high-energy heavy-ion scatterings | The recent works by the present authors and their collaborator predicted that
the real part of heavy-ion optical potentials changes its character from
attraction to repulsion around the incident energy per nucleon $E =$ 200 -- 300
MeV/u on the basis of the complex $G$-matrix interaction and the double-folding
model (DF... | 1211.2480v2 |
2012-12-03 | Normal state properties of spin-orbit coupled Fermi gases in the upper branch of energy spectrum | We investigate normal state properties of spin-orbit coupled Fermi gases with
repulsive s-wave interaction, in the absence of molecule formation, i.e., in
the so-called "upper branch". Within the framework of random phase
approximation, we derive analytical expressions for the quasi-particle lifetime
$\tau_s$, the effe... | 1212.0420v5 |
2013-01-24 | Overview of large N QCD with chemical potential at weak and strong coupling | In this note we summarize the results from a longer article on obtaining the
QCD phase diagram as a function of the temperature and chemical potential at
large Nc and large Nf in the weak and the strong coupling limits. The weak
coupling phase diagram is obtained from the Polyakov line order parameter, and
the quark nu... | 1301.5750v1 |
2013-02-15 | Going beyond the linear approximation in describing electron- phonon coupling: relevance for the Holstein model | Using the momentum average approximation we study the importance of adding
higher-than-linear terms in the electron-phonon coupling on the properties of
single polarons described by a generalized Holstein model. For medium and
strong linear coupling, even small quadratic electron-phonon coupling terms are
found to lead... | 1302.3843v2 |
2013-03-07 | Constraints on Disformal Couplings from the Properties of the Cosmic Microwave Background Radiation | Certain modified gravity theories predict the existence of an additional,
non-conformally coupled scalar field. A disformal coupling of the field to the
Cosmic Microwave Background (CMB) is shown to affect the evolution of the
energy density in the radiation fluid and produces a modification of the
distribution functio... | 1303.1773v3 |
2013-04-05 | Direct constraints on the top-Higgs coupling from the 8 TeV LHC data | The LHC experiments have analyzed the 7 and 8 TeV LHC data in the main Higgs
production and decay modes. Current analyses only loosely constrain an
anomalous top-Higgs coupling in a direct way. In order to strongly constrain
this coupling, the Higgs-top associated production is reanalyzed. Thanks to the
strong destruct... | 1304.1822v2 |
2013-04-11 | Large spin-orbit coupling in carbon nanotubes | It has recently been recognized that the strong spin-orbit interaction
present in solids can lead to new phenomena, such as materials with non-trivial
topological order. Although the atomic spin-orbit coupling in carbon is weak,
the spin-orbit coupling in carbon nanotubes can be significant due to their
curved surface.... | 1304.3234v1 |
2013-04-26 | New constraints on Coupled Dark Energy from Planck | We present new constraints on coupled dark energy from the recent
measurements of the Cosmic Microwave Background Anisotropies from the Planck
satellite mission. We found that a coupled dark energy model is fully
compatible with the Planck measurements, deriving a weak bound on the dark
matter-dark energy coupling para... | 1304.7119v3 |
2013-05-06 | Halo Coupling and Cleaning by a Space Charge Resonance in High Intensity Beams | We show that the difference resonance driven by the space charge
pseudo-octupole of high-intensity beams not only couples the beam core
emittances; it can also lead to emittance exchange in the beam halo, which is
of relevance for beam loss in high intensity accelerators. With reference to
linear accelerators the "main... | 1305.1271v2 |
2013-05-28 | Strong coupling of optical nanoantennas and atomic systems | An optical nanoantenna and adjacent atomic systems are strongly coupled when
an excitation is repeatedly exchanged between these subsystems prior to its
eventual dissipation into the environment. It remains challenging to reach the
strong coupling regime but it is equally rewarding. Once being achieved,
promising appli... | 1305.6427v2 |
2013-07-16 | Vortex molecules in Bose-Einstein condensates | Stable vortex dimers are known to exist in coherently coupled two component
Bose-Einstein condensates (BECs). We construct stable vortex trimers in three
component BECs and find that the shape can be controlled by changing the
internal coherent (Rabi) couplings. Stable vortex N-omers are also constructed
in coherently ... | 1307.4312v1 |
2013-10-06 | Sub-Ohmic spin-boson model with off-diagonal coupling: Ground state properties | We have carried out analytical and numerical studies of the spin-boson model
in the sub-ohmic regime with the influence of both the diagonal and
off-diagonal coupling accounted for via the Davydov D1 variational ansatz.
While a second-order phase transition is known to be exhibited by this model in
the presence of diag... | 1310.1548v1 |
2013-10-15 | Complexity and asymptotic stability in the process of biochemical substance exchange in a coupled ring of cells | We have considered the complexity and asymptotic stability in the process of
biochemical substance exchange in a coupled ring of cells. We have used coupled
maps to model this process. It includes the coupling parameter, cell affinity
and environmental factor as master parameters of the model. We have introduced:
(i) t... | 1310.3942v1 |
2013-11-11 | Coupling layers regularizes wave propagation in laminar stochastic neural fields | We study the effects of coupling between layers of stochastic neural field
models with laminar structure. In particular, we focus on how the propagation
of waves of neural activity in each layer is affected by the coupling. Synaptic
connectivities within and between each layer are determined by integral kernels
of an i... | 1311.2607v1 |
2013-11-22 | Transition in coupled replicas may not imply a finite temperature ideal glass transition in glass forming systems | A key open question in the glass transition field is whether a finite
temperature thermodynamic transition to the glass state exists or not. Recent
simulations of coupled replicas in atomistic models have found signatures of a
static transition as a function of replica coupling. This can be viewed as
evidence of an ass... | 1311.5827v1 |
2013-12-08 | Scalable and Quasi-Contractive Markov Coupling of Maxwell Collision | This paper considers space homogenous Boltzmann kinetic equations in
dimension $d$ with Maxwell collisions (and without Grad's cut-off). An explicit
Markov coupling of the associated conservative (Nanbu) stochastic $N$-particle
system is constructed, using plain parallel coupling of isotropic random walks
on the sphere... | 1312.2253v3 |
2013-12-12 | Nonlinear modes and symmetries in linearly-coupled pairs of PT-invariant dimers | The subject of the work are pairs of linearly coupled PT-symmetric dimers.
Two different settings are introduced, namely, straight-coupled dimers, where
each gain site is linearly coupled to one gain and one loss site, and
cross-coupled dimers, with each gain site coupled to two lossy ones. The latter
pair with equal c... | 1312.3376v1 |
2014-01-02 | Traffic congestion in interconnected complex networks | Traffic congestion in isolated complex networks has been investigated
extensively over the last decade. Coupled network models have recently been
developed to facilitate further understanding of real complex systems. Analysis
of traffic congestion in coupled complex networks, however, is still relatively
unexplored. In... | 1401.0412v2 |
2014-01-03 | Generalized Coupled-line All-Pass Phasers | Generalized coupled-line all-pass phasers, based on transversally-cascaded
(TC), longitudinally-cascaded (LC) and hybrid-cascaded (HC) coupled
transmission line sections, are presented and demonstrated using analytical,
full-wave and experimental results. It is shown that for N commensurate
coupled-line sections, LC an... | 1401.0676v1 |
2014-01-14 | Coupling spin ensembles via superconducting flux qubits | We study a hybrid quantum system consisting of spin ensembles and
superconducting flux qubits, where each spin ensemble is realized using the
nitrogen-vacancy centers in a diamond crystal and the nearest-neighbor spin
ensembles are effectively coupled via a flux qubit.We show that the coupling
strengths between flux qu... | 1401.3095v2 |
2014-01-14 | Dynamics of reaction-diffusion patterns controlled by asymmetric nonlocal coupling as limiting case of differential advection | A one-component bistable reaction-diffusion system with asymmetric nonlocal
coup ling is derived as limiting case of a two-component activator-inhibitor
reaction -diffusion model with differential advection. The effects of
asymmetric nonlocal couplings in such a bistable reaction-diffusi on system are
then compared to ... | 1401.3111v4 |
2014-01-20 | Fast dynamics and spectral properties of a multilongitudinal-mode semiconductor laser: evolution of an ensemble of driven, globally coupled nonlinear modes | We analyze the fast transient dynamics of a multi-longitudinal mode
semiconductor laser on the basis of a model with intensity coupling. The
dynamics, coupled to the constraints of the system and the below-threshold
initial conditions, imposes a faster growth of the side modes in the initial
stages of the transient, th... | 1401.4947v1 |
2014-04-09 | Mechanisms of Electromechanical Coupling in Strain Based Scanning Probe Microscopy | Electromechanical coupling is ubiquitous in nature and underpins the
functionality of materials and systems as diverse as ferroelectric and
multiferroic materials, electrochemical devices, and biological systems, and
strain-based scanning probe microscopy (s-SPM) techniques have emerged as a
powerful tool in characteri... | 1404.2369v1 |
2014-04-22 | Capacitative coupling of singlet-triplet qubits in different inter-qubit geometries | In the singlet-triplet qubit architecture, the two-qubit interactions
required in universal quantum computing can be implemented by capacitative
coupling, by exploiting the charge distribution differences of the singlet and
triplet states. The efficiency of this scheme is limited by decoherence, that
can be mitigated b... | 1404.5420v1 |
2014-07-01 | Quasi-equilibrium relaxation of two identical quantum oscillators with arbitrary coupling strength | The paper deals with the problem of open systems out of equilibrium. An
analytical expression for time-dependent density matrix of two arbitrary
coupled identical quantum oscillators interacting with separate reservoirs is
derived using path integral methods. The temporal behavior of spatial variances
and of covariance... | 1407.0129v1 |
2014-08-27 | Spin-orbit Coupling and Multiple Phases in Spin-triplet Superconductor Sr$_2$RuO$_4$ | We study the spin-orbit coupling in spin-triplet Cooper pairs and clarify
multiple superconducting (SC) phases in Sr$_2$RuO$_4$. Based on the analysis of
the three-orbital Hubbard model with atomic LS coupling, we show some selection
rules of the spin-orbit coupling in Cooper pairs. The spin-orbit coupling is
small whe... | 1408.6353v1 |
2014-09-12 | Ghosts & Matter Couplings in Massive (bi-&multi-)Gravity | Recently, several works have investigated the coupling to matter in
ghost-free massive (bi-&multi-)gravity and a new effective coupling to matter
has been proposed. In this note we clarify some confusion on the existence and
the implications of a ghost above the strong coupling scale. We confirm that
the standard const... | 1409.3834v2 |
2014-09-23 | Exploring the Anomalous Higgs-top Couplings | Top quark with its large Yukawa coupling is crucially important to explore
TeV scale physics. Therefore, the study of Higgs-top sector is highly motivated
to look for any deviations from the standard model predictions. The most
general lowest order Lagrangian for the Higgs-top Yukawa coupling has scalar
($\kappa$) and ... | 1409.6553v2 |
2014-09-26 | Multi-cluster dynamics in coupled phase oscillator networks | In this paper we examine robust clustering behaviour with multiple nontrivial
clusters for identically and globally coupled phase oscillators. These systems
are such that the dynamics is completely determined by the number of
oscillators N and a single scalar function $g(\varphi)$ (the coupling
function). Previous work... | 1409.7527v1 |
2014-10-24 | Phenomenological theory of magneto-electric coupling in granular multiferroics | We study coupling between the ferroelectric polarization and magnetization of
granular ferromagnetic film using a phenomenological model of combined
multiferroic system consisting of granular ferromagnetic film placed above the
ferroelectric (FE) layer. The coupling is due to screening of Coulomb
interaction in the gra... | 1410.6536v1 |
2014-11-06 | Spin - orbital-angular-momentum coupling in Bose-Einstein condensates | Spin-orbit coupling (SOC) plays a crucial role in many branches of physics.
In this context, the recent experimental realization of the coupling between
spin and linear momentum of ultracold atoms opens a completely new avenue for
exploring new spin-related superfluid physics. Here we propose that another
important and... | 1411.1737v3 |
2014-12-08 | Effect of Electron-Phonon Coupling on Thermal Transport across Metal-Nonmetal Interface - A Second Look | The effect of electron-phonon (e-ph) coupling on thermal transport across
metal-nonmetal interfaces is yet to be completely understood. In this paper, we
use a series of molecular dynamics (MD) simulations with e-ph coupling effect
included by Langevin dynamics to calculate the thermal conductance at a model
metal-nonm... | 1412.2791v3 |
2014-12-30 | Evolution of generalized couple-stress continuum theories: a critical analysis | In this paper, we examine different generalized couple-stress continuum
mechanics theories, including couple stress, strain gradient and micropolar
theories. First, we investigate the fundamental requirements in any consistent
size-dependent couple stress continuum mechanics, for which satisfying basic
rules of mathema... | 1501.03112v1 |
2015-01-29 | Temperature dependence of thermal conductivities of coupled rotator lattice and the momentum diffusion in standard map | In contrary to other 1D momentum-conserving lattices such as the
Fermi-Pasta-Ulam $\beta$ (FPU-$\beta$) lattice, the 1D coupled rotator lattice
is a notable exception which conserves total momentum while exhibits normal
heat conduction behavior. The temperature behavior of the thermal
conductivities of 1D coupled rotat... | 1501.07419v1 |
2015-02-27 | Quantum phases of Bose-Einstein condensates with synthetic spin - orbital-angular-momentum coupling | The experimental realization of emergent spin-orbit coupling through
laser-induced Raman transitions in ultracold atoms paves the way for exploring
novel superfluid physics and simulating exotic many-body phenomena. A recent
proposal with the use of Laguerre-Gaussian lasers enables another fundamental
type of coupling ... | 1502.08052v2 |
2015-03-15 | Inverse Vernier Effects in Coupled Lasers | In this report we study the Vernier effect in coupled laser systems
consisting of two cavities. We show that depending on the nature of their
coupling, not only can the "supermodes" formed at the overlapping resonances of
the coupled cavities have the lowest thresholds and lase first as previously
suggested, leading to... | 1503.04382v1 |
2015-04-14 | Strong Coupling of Intersubband Resonance in a High Electron Mobility Transistor Structure to a THz Metamaterial by Ultrawide Electrical Tuning | The interaction between intersubband resonances (ISRs) and metamaterial
microcavities can form a strongly coupled system where new resonances form that
depend on the coupling strength. Here we present experimental evidence of
strong coupling between the cavity resonance of a THz metamaterial and the ISR
in a high elect... | 1504.03569v1 |
2015-05-07 | Landau pole in the Standard Model with weakly interacting scalar fields | We consider the Standard Model with a new scalar field $X$ which is a
$n_X^{}$ representation of the $SU(2)_L$ with a hypercharge $Y_X$. The
renormalization group running effects on the new scalar quartic coupling
constants are evaluated. Even if we set the scalar quartic coupling constants
to be zero at the scale of t... | 1505.01721v2 |
2015-05-21 | Cavity-mediated coupling of mechanical oscillators limited by quantum backaction | A complex quantum system can be constructed by coupling simple quantum
elements to one another. For example, trapped-ion or superconducting quantum
bits may be coupled by Coulomb interactions, mediated by the exchange of
virtual photons. Alternatively quantum objects can be coupled by the exchange
of real photons, part... | 1505.05850v1 |
2015-05-27 | Position-squared coupling in a tunable photonic crystal optomechanical cavity | We present the design, fabrication, and characterization of a planar silicon
photonic crystal cavity in which large position-squared optomechanical coupling
is realized. The device consists of a double-slotted photonic crystal structure
in which motion of a central beam mode couples to two high-Q optical modes
localize... | 1505.07291v1 |
2015-06-18 | Vectorlike $W^\pm$-boson coupling at TeV and third family fermion masses | In the third fermion family and gauge symmetry of the Standard Model, we
study the quark-quark, lepton-lepton and quark-lepton four-fermion operators in
an effective theory at high energies. These operators have nontrivial
contributions to the Schwinger-Dyson equations for fermion self-energy
functions and the $W^\pm$-... | 1506.05994v3 |
2015-09-02 | Instanton induced Yukawa couplings from distant E3 and E(-1) instantons | We calculate non-perturbative contributions to Yukawa couplings on D3-branes
at orbifold singularities due to E3 and fractional E(-1) instantons which do
not intersect the visible sector branes. While distant E3 instantons on bulk
cycles typically contribute to Yukawa couplings, we find that distant
fractional E(-1) ca... | 1509.00852v2 |
2015-09-21 | Nature of Valance Band Splitting on Multilayer MoS2 | Understanding the origin of splitting of valance band is important since it
governs the unique spin and valley physics in few-layer MoS2. With first
principle methods, we explore the effects of spin-orbit coupling and layer's
coupling on few-layer MoS2. It is found that intra-layer spin-orbit coupling
has a major contr... | 1509.06118v1 |
2015-09-23 | Plasmon-enhanced electron-phonon coupling in Dirac surface states of the thin-film topological insulator Bi2Se3 | Raman measurements of a Fano-type surface phonon mode associated with Dirac
surface states (SS) in Bi2Se3 topological insulator thin films allowed an
unambiguous determination of the electron-phonon coupling strength in Dirac SS
as a function of film thickness ranging from 2 to 40 nm. A non-monotonic
enhancement of the... | 1509.07182v1 |
2015-11-03 | Spin-Orbit Coupling Induced Back-action Cooling in Cavity-Optomechanics with a Bose-Einstein Condensate | We report a spin-orbit coupling induced back-action cooling in an
optomechanical system, composed of a spin-orbit coupled Bose-Einstein
condensate trapped in an optical cavity with one movable end mirror, by
suppressing heating effects of quantum noises. The collective density
excitations of the spin-orbit coupling med... | 1511.01109v2 |
2015-11-04 | Enhanced strain coupling of nitrogen vacancy spins to nanoscale diamond cantilevers | Nitrogen vacancy (NV) centers can couple to confined phonons in diamond
mechanical resonators via the effect of lattice strain on their energy levels.
Access to the strong spin-phonon coupling regime with this system requires
resonators with nanoscale dimensions in order to overcome the weak strain
response of the NV g... | 1511.01548v1 |
2015-11-15 | Mode coupling in solar spicule oscillations | In a real medium which has oscillations, the perturbations can cause the
energy transfer between different modes. The perturbation interpreted as an
interaction between the modes is inferred as mode coupling. Mode coupling
process in an inhomogeneous medium such as solar spicules may lead to the
coupling of kink waves ... | 1511.05135v1 |
2016-01-25 | Master Stability Islands for Amplitude Death in Networks of Delay-Coupled Oscillators | This paper presents a master stability function (MSF) approach for analyzing
the stability of amplitude death (AD) in networks of delay-coupled oscillators.
Unlike the familiar MSFs for instantaneously coupled networks, which typically
have a single input encoding for the effects of the eigenvalues of the network
Lapla... | 1601.06758v2 |
2016-02-13 | Perturbative unification of gauge couplings in supersymmetric $E_6$ models | We study gauge coupling unification in supersymmetric $E_6$ models where an
additional $\mathrm{U}(1)'$ gauge symmetry is broken near the TeV scale and a
number of exotic matter fields from the $\bm{27}$ representations have
$O(\mathrm{TeV})$ mass. Solving the 2-loop renormalization group equations of
gauge couplings a... | 1602.04271v2 |
2016-04-22 | Coherent Coupling of WS_2 Monolayers with Metallic Photonic Nanostructures at Room Temperature | Room temperature strong coupling of WS_2 monolayer exciton transitions to
metallic Fabry-Perot and plasmonic optical cavities is demonstrated. A Rabi
splitting of 101 meV is observed for the Fabry-Perot cavity, more than double
those reported to date in other 2D materials. The enhanced magnitude and
visibility of WS_2 ... | 1604.06656v1 |
2016-06-10 | Indirect Coupling between Two Cavity Photon Systems via Ferromagnetic Resonance | We experimentally realize indirect coupling between two cavity modes via
strong coupling with the ferromagnetic resonance in Yttrium Iron Garnet (YIG).
We find that some indirectly coupled modes of our system can have a higher
microwave transmission than the individual uncoupled modes. Using a coupled
harmonic oscillat... | 1606.03469v1 |
2016-06-22 | Electro-hydrodynamic synchronization of piezoelectric flags | Hydrodynamic coupling of flexible flags in axial flows may profoundly
influence their flapping dynamics, in particular driving their synchronization.
This work investigates the effect of such coupling on the harvesting efficiency
of coupled piezoelectric flags, that convert their periodic deformation into an
electrical... | 1606.06936v1 |
2016-06-24 | The impact of non-minimally coupled gravity on vacuum stability | We consider vacuum decay in the presence of a non-minimal coupling to
gravity. We extend the usual thin-wall solution to include the non-minimal
coupling. We also perform a full numerical study and discuss the validity of
the new thin-wall approximation. Implications of a large cosmological constant,
whose influence on... | 1606.07808v1 |
2016-07-07 | Synchronization Detection in Networks of Coupled Oscillators for Pattern Recognition | Coupled oscillator-based networks are an attractive approach for implementing
hardware neural networks based on emerging nanotechnologies. However, the
readout of the state of a coupled oscillator network is a difficult challenge
in hardware implementations, as it necessitates complex signal processing to
evaluate the ... | 1607.01983v1 |
2016-07-24 | Oscillation quenching in third order Phase Locked Loop coupled by mean field diffusive coupling | We explore analytically the oscillation quenching phenomena (amplitude death
and oscillation death) in a coupled third order phase locked loop (PLL) both in
periodic and chaotic mode. The phase locked loops are coupled through mean
field diffusive coupling. The lower and upper limits of the quenched state are
identifie... | 1607.06990v1 |
2016-07-26 | Mode Modification of Plasmonic Gap Resonances induced by Strong Coupling with Molecular Excitons | Plasmonic cavities can be used to control the atom-photon coupling process at
the nanoscale, since they provide ultrahigh density of optical states in an
exceptionally small mode volume. Here we demonstrate strong coupling between
molecular excitons and plasmonic resonances (so-called plexcitonic coupling) in
a film-co... | 1607.07620v1 |
2017-02-15 | Topological Properties of a Coupled Spin-Photon System Induced by Damping | We experimentally examine the topological nature of a strongly coupled
spin-photon system induced by damping. The presence of both spin and photonic
losses results in a non-Hermitian system with a variety of exotic phenomena
dictated by the topological structure of the eigenvalue spectra and the
presence of an exceptio... | 1702.04797v2 |
2017-02-17 | Control of amplitude chimeras by time delay in dynamical networks | We investigate the influence of time-delayed coupling in a ring network of
non-locally coupled Stuart-Landau oscillators upon chimera states, i.e.,
space-time patterns with coexisting partially coherent and partially incoherent
domains. We focus on amplitude chimeras which exhibit incoherent behavior with
respect to th... | 1702.05326v2 |
2017-02-26 | Magnon-photon coupling in antiferromagnets | Magnon-photon coupling in antiferromagnets has many attractive features that
do not exist in ferro- or ferrimagnets. We show quantum-mechanically that, in
the absence of an external field, one of the two degenerated spin wave bands
couples with photons while the other does not. The photon mode anticrosses with
the coup... | 1702.07977v1 |
2017-03-06 | Cosmological Dynamics of D-BIonic and DBI Scalar Field and Coincidence Problem of Dark Energy | We study the cosmological dynamics of D-BIonic and DBI scalar field, which is
coupled to matter fluid. For the exponential potential and the exponential
couplings, we find a new analytic scaling solution yielding the accelerated
expansion of the Universe. Since it is shown to be an attractor for some range
of the coupl... | 1703.01745v1 |
2017-03-13 | Multiple-point principle realized with strong dynamics | We present a novel extension of the Standard Model which fulfills the
multiple-point principle without contradicting the Higgs particle mass
measurement. In the model, the scalar potential has two minima where the scalar
field has vacuum expectation values of 246 GeV and the Planck mass $\simeq
2.44\times 10^{18}$ GeV,... | 1703.04235v2 |
2017-03-16 | AdS/CFT predictions for azimuthal and momentum correlations of $b\bar{b}$ pairs in heavy ion collisions | We use an energy loss model sensitive to thermal fluctuations to compute the
azimuthal and momentum correlations of $b\bar{b}$ pairs traversing a strongly
coupled plasma from Pb+Pb collisions at LHC ($\sqrt{s}=2.76\text{TeV}$). The
azimuthal correlations are compared with those from perturbative QCD based
simulations. ... | 1703.05845v1 |
2017-03-27 | Asymptotic safety of higher derivative quantum gravity non-minimally coupled with a matter system | We study asymptotic safety of models of the higher derivative quantum gravity
with and without matter. The beta functions are derived by utilizing the
functional renormalization group, and non-trivial fixed points are found. It
turns out that all couplings in gravity sector, namely the cosmological
constant, the Newton... | 1703.09033v3 |
2017-08-05 | Precise measurement of coupling strength and high temperature quantum effect in a nonlinearly coupled qubit-oscillator system | We study the coherence dynamics of a qubit coupled to a harmonic oscillator
with both linear and quadratic interactions. As long as the linear coupling
strength is much smaller than the oscillator frequency, the long time behavior
of the coherence is dominated by the quadratic coupling strength $g_2$. The
coherence dec... | 1708.01737v4 |
2017-08-21 | Interparticle Coupling Effects of Two Quantum Dots System on the Transport Properties of a Single Plasmon | Transport properties of a single plasmon interacting with two quantum dots
(QDs) system coupled to one-dimensional surface plasmonic waveguide are
investigated theoretically via the real-space approach. We mainly focus on the
coupling effects of the two QDs on the transmission properties of a single
incident plasmon. W... | 1708.06635v1 |
2018-02-27 | Accurate measurement of a 96% input coupling into a cavity using polarization tomography | Pillar microcavities are excellent light-matter interfaces providing an
electromagnetic confinement in small mode volumes with high quality factors.
They also allow the efficient injection and extraction of photons, into and
from the cavity, with potentially near-unity input and output-coupling
efficiencies. Optimizing... | 1802.09862v4 |
2018-04-02 | Sequential escapes: onset of slow domino regime via a saddle connection | We explore sequential escape behaviour of coupled bistable systems under the
influence of stochastic perturbations. We consider transient escapes from a
marginally stable "quiescent" equilibrium to a more stable "active"
equilibrium. The presence of coupling introduces dependence between the escape
processes: for diffu... | 1804.00550v1 |
2018-04-12 | Ghost-free completion of an effective matter coupling in bimetric theory | We consider a particular set of ghost-free interactions for three spin-2
fields in which we freeze out the dynamics of the metric tensor that couples to
the matter sector. Integrating out the non-dynamical degrees of freedom in
vacuum results in a ghost-free bimetric theory. In the presence of the matter
source, which ... | 1804.04671v2 |
2018-11-05 | Revealing Strong Plasmon-Exciton Coupling Between Nano-gap Resonators and Two-Dimensional Semiconductors at Ambient Conditions | Strong coupling of two-dimensional semiconductor excitons with plasmonic
resonators enables control of light-matter interaction at the subwavelength
scale. Here we develop strong coupling in plasmonic nano-gap resonators that
allow modification of exciton number contributing to the coupling. Using this
system, we not o... | 1811.01598v1 |
2018-11-19 | Squared quadratic Wasserstein distance : optimal couplings and Lions differentiability | In this paper, we remark that any optimal coupling for the quadratic
Wasserstein distance $W^2_2(\mu,\nu)$ between two probability measures $\mu$
and $\nu$ with finite second order moments on $\mathbb{R}^d$ is the composition
of a martingale coupling with an optimal transport map ${\mathcal T}$. We check
the existence ... | 1811.07787v3 |
2018-11-24 | Collective dipole oscillations of a spin-orbit coupled Fermi gas | The collective dipole mode is induced and measured in a spin-orbit (SO)
coupled degenerate Fermi gas of $^{173}$Yb atoms. Using a differential optical
Stark shift, we split the degeneracy of three hyperfine states in the ground
manifold, and independently couple consecutive spin states with the equal Raman
transitions.... | 1811.09846v1 |
2010-05-24 | EPW: A program for calculating the electron-phonon coupling using maximally localized Wannier functions | EPW (Electron-Phonon coupling using Wannier functions) is a program written
in FORTRAN90 for calculating the electron-phonon coupling in periodic systems
using density-functional perturbation theory and maximally-localized Wannier
functions. EPW can calculate electron-phonon interaction self-energies,
electron-phonon s... | 1005.4418v1 |
2014-03-26 | Bipolarons and multi-polarons consisting of impurity atoms in a Bose-Einstein condensate | The variational Feynman formalism for the polaron, extended to an
all-coupling treatment of bipolarons, is applied for two impurity atoms in a
Bose-Einstein condensate. This shows that if the polaronic coupling strength is
large enough the impurities will form a bound state (the bipolaron). As a
function of the mutual ... | 1403.6588v1 |
2014-03-31 | Degenerate Quantum Gases with Spin-Orbit Coupling | This review focuses on recent developments on studying synthetic spin-orbit
(SO) coupling in ultracold atomic gases. Two types of SO coupling are
discussed. One is Raman process induced coupling between spin and motion along
one of the spatial directions, and the other is Rashba SO coupling. We
emphasize their common f... | 1403.8021v2 |
2017-01-02 | Chimera patterns in two-dimensional networks of coupled neurons | We discuss synchronization patterns in networks of FitzHugh-Nagumo and Leaky
Integrate-and-Fire oscillators coupled in a two-dimensional toroidal geometry.
Common feature between the two models is the presence of fast and slow
dynamics, a typical characteristic of neurons. Earlier studies have
demonstrated that both mo... | 1701.00342v1 |
2017-01-17 | BTZ black hole assuming running couplings | In the present work a generalization of the BTZ black hole is studied, for
the case of scale dependent couplings. One starts by using the effective action
for scale dependence couplings to get a generalization of the Einstein field
equations. Self consistent solutions for lapse function, cosmological coupling
and Newto... | 1701.04531v1 |
2018-05-06 | Quantum evolution speed in the finite-temperature bosonic environment | We investigate the quantum evolution speed of a qubit in two kinds of
finite-temperature environments. The first environment is a bosonic bath with
Ohmic-like spectrum. It is found that the high temperature not only leads to
the speed-up but also speed-down processes in the weak-coupling regime, which
is different from... | 1805.02145v1 |
2018-05-12 | Occasional uncoupling overcomes measure desynchronization | Owing to the absence of the phase space attractors in the Hamiltonian
dynamical systems, the concept of the identical synchronization between the
dissipative systems is inapplicable to the Hamiltonian systems for which, thus,
one defines a related generalized phenomenon known as the measure
synchronization. A coupled p... | 1805.04761v2 |
2018-05-15 | Spin-orbit-coupled Bose-Einstein condensates of rotating polar molecules | An experimental proposal for realizing spin-orbit (SO) coupling of
pseudospin-1 in the ground manifold $^1\Sigma(\upsilon=0)$ of (bosonic)
bialkali polar molecules is presented. The three spin components are composed
of the ground rotational state and two substates from the first excited
rotational level. Using hyperfi... | 1805.05524v1 |
2018-05-20 | Network synchronization with periodic coupling | The synchronization behavior of networked chaotic oscillators with periodic
coupling is investigated. It is observed in simulations that the network
synchronizability could be significantly influenced by tuning the coupling
frequency, even making the network alternated between the synchronous and
non-synchronous states... | 1805.07699v1 |
2018-05-22 | Stability of phase difference trajectories of networks of Kuramoto oscillators with time-varying couplings and intrinsic frequencies | We study dynamics of phase-differences (PDs) of coupled oscillators where
both the intrinsic frequencies and the couplings vary in time. In case the
coupling coefficients are all nonnegative, we prove that the PDs are
asymptotically stable if there exists T>0 such that the aggregation of the
time-varying graphs across ... | 1805.08457v1 |
2018-05-23 | Dynamics of Kuramoto oscillators with time-delayed positive and negative couplings | Many real-world examples of distributed oscillators involve not only time
delays but also attractive (positive) and repulsive (negative) influences in
their network interactions. Here, considering such examples, we generalize the
Kuramoto model of globally coupled oscillators with time-delayed positive and
negative cou... | 1805.08967v1 |
2008-07-10 | Search for anomalous $\boldmath{Wtb}$ couplings in single top quark production | In 0.9 fb$^{-1}$ of $p \bar p$ collisions, D0 has observed an excess of
events with an isolated lepton, missing transve rse momentum, and two to four
jets. This excess is consistent with single top quark production. We examine
these data to study the Lorentz structure of the $Wtb$ coupling. The standard
model predicts ... | 0807.1692v1 |
2009-12-07 | Interplay of vacuum-mediated inter- and intraatomic couplings in a pair of atoms | The resonance fluorescence emitted by a system of two dipole-dipole
interacting nearby four-level atoms in J=1/2 - J=1/2 configuration is studied.
This setup is the simplest realistic model system which provides a complete
description of the (interatomic) dipole-dipole interaction for arbitrary
orientation of the inter... | 0912.1300v1 |
2009-12-07 | Fixing the Pole in the Pyramid | We revisit the problem of the hidden sector Landau pole in the Pyramid
Scheme. There is a fixed line in the plane of hidden sector gauge coupling and
a Yukawa coupling between the trianon fields. We postulate that the couplings
flow to this line, at a point where the hidden sector gauge coupling is close
to the strong ... | 0912.1313v1 |
2009-12-30 | Dressed Counterions: Strong Electrostatic Coupling in the Presence of Salt | We reformulate the theory of strong electrostatic coupling in order to
describe an asymmetric electrolyte solution of monovalent salt ions and
polyvalent counterions using field-theoretical techniques and Monte-Carlo
simulations. The theory is based on an asymmetric treatment of the different
components of the electrol... | 0912.5460v2 |
2012-04-01 | Reconstruction of a Nonminimal Coupling Theory with Scale-invariant Power Spectrum | A nonminimal coupling single scalar field theory, when transformed from
Jordan frame to Einstein frame, can act like a minimal coupling one. Making use
of this property, we investigate how a nonminimal coupling theory with
scale-invariant power spectrum could be reconstructed from its minimal coupling
counterpart, whic... | 1204.0189v2 |
2012-04-18 | Reentrant enhancement of quantum fluctuations for symmetric environmental coupling | The `system-plus-reservoir' (SPR) model is the most common and effective
approach to study quantum dissipative effects. Indeed, it makes quantization
possible by considering the whole energy-conserving system, while the
reservoir's degrees of freedom, assumed to be harmonic, can be `traced out' by
the path-integral tec... | 1204.4132v1 |
2013-09-26 | $ttH$ Anomalous Coupling in Double Higgs Production | We study the effects of top-Higgs anomalous coupling in the production of a
pair of Higgs boson via gluon fusion at the Large Hadron Collider (LHC). The
introduction of anomalous $ttH$ coupling can alter the hadronic double Higgs
boson cross section and can lead to characteristic changes in certain kinematic
distributi... | 1309.6907v2 |
2014-06-09 | A unified operator splitting approach for multi-scale fluid-particle coupling in the lattice Boltzmann method | A unified framework to derive discrete time-marching schemes for coupling of
immersed solid and elastic objects to the lattice Boltzmann method is
presented. Based on operator splitting for the discrete Boltzmann equation,
second-order time-accurate schemes for the immersed boundary method, viscous
force coupling and e... | 1406.2211v1 |
2014-06-18 | Charge and spin polarized currents in mesoscopic rings with Rashba spin-orbit interactions coupled to an electron reservoir | The electronic states of a mesoscopic ring are assessed in the presence of
Rashba Spin Orbit coupling and a $U(1)$ gauge field. Spin symmetric coupling to
an ideal lead is implemented following B\"uttiker's voltage probe. The exact
density of states is derived using the reservoir uncoupled eigenstates as basis
function... | 1406.4659v1 |
2014-06-27 | Spin-phonon coupling in BaFe12O19 M-type hexaferrite | The spin-phonon coupling in magnetic materials is due to the modulation of
the exchange integral by lattice vibrations. BaFe12O19 M-type hexaferrite,
which is the most used magnetic material as permanent magnet, transforms into
ferromagnet at high temperatures, but no spin-phonon coupling was previously
observed at thi... | 1406.7334v2 |
2016-05-13 | Chimera patterns induced by distance-dependent power-law coupling in ecological networks | This paper reports the occurrence of several chimera patterns and the
associated transitions among them in a network of coupled oscillators, which
are connected by a long range interaction that obeys a distance-dependent power
law. This type of interaction is common in physics and biology and constitutes
a general form... | 1605.04120v2 |
2016-08-29 | When polarons meet polaritons: Exciton-vibration interactions in organic molecules strongly coupled to confined light fields | We present a microscopic semi-analytical theory for the description of
organic molecules interacting strongly with a cavity mode. Exciton-vibration
coupling within the molecule and exciton-cavity interaction are treated on an
equal footing by employing a temperature-dependent variational approach. The
interplay between... | 1608.08019v2 |
2017-06-27 | Bound pulse trains in arrays of coupled spatially extended dynamical systems | We study the dynamics of an array of nearest-neighbor coupled spatially
distributed systems each generating a periodic sequence of short pulses. We
demonstrate that unlike a solitary system generating a train of equidistant
pulses, an array of such systems can produce a sequence of clusters of closely
packed pulses, wi... | 1706.08802v1 |
2017-06-27 | Exact functionals for correlated electron-photon systems | For certain correlated electron-photon systems we construct the exact
density-to-potential maps, which are the basic ingredients of a
density-functional reformulation of coupled matter-photon problems. We do so
for numerically exactly solvable models consisting of up to four fermionic
sites coupled to a single photon m... | 1706.08852v1 |
2017-10-06 | Input-output theory for spin-photon coupling in Si double quantum dots | The interaction of qubits via microwave frequency photons enables
long-distance qubit-qubit coupling and facilitates the realization of a
large-scale quantum processor. However, qubits based on electron spins in
semiconductor quantum dots have proven challenging to couple to microwave
photons. In this theoretical work ... | 1710.02508v1 |
2017-10-18 | Dynamical analysis for a scalar-tensor model with kinetic and non-minimal couplings | We study the autonomous system for a scalar-tensor model of dark energy with
non-minimal coupling to curvature and non-minimal kinetic coupling to the
Einstein tensor. The critical points describe important stable asymptotic
scenarios including quintessence, phantom and de Sitter attractor solutions.
Two functional for... | 1710.07273v1 |
2017-10-27 | Coupled Coincidence Point of $φ$-Contraction Type $T$-Coupling and $(φ,ψ)$-Contraction Type Coupling in Metric Spaces | In this research article, we discuss two topics. Firstly, we introduce
SCC-Map and $\phi$-contraction type $T$-coupling. By using these two
definitions, we generalize $\phi$-contraction type coupling given by H. Aydi et
al. [3] to $\phi$-contraction type $T$-coupling and proved the existence
theorem of coupled coincide... | 1710.10054v1 |
2017-12-22 | Backstepping Control of Coupled Linear Parabolic PIDEs with Spatially-Varying Coefficients | This paper considers the backstepping design of state feedback controllers
for coupled linear parabolic partial integro-differential equations (PIDEs) of
Volterra-type with distinct diffusion coefficients, spatially-varying
parameters and mixed boundary conditions. The corresponding target system is a
cascade of parabo... | 1712.08406v1 |
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