publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2018-05-08 | Understanding the enhanced synchronization of delay-coupled networks with fluctuating topology | We study the dynamics of networks with coupling delay, from which the
connectivity changes over time. The synchronization properties are shown to
depend on the interplay of three time scales: the internal time scale of the
dynamics, the coupling delay along the network links and time scale at which
the topology changes... | 1805.03004v1 |
2018-05-09 | Finite size effects for spiking neural networks with spatially dependent coupling | We study finite-size fluctuations in a network of spiking deterministic
neurons coupled with non-uniform synaptic coupling. We generalize a previously
developed theory of finite size effects for uniform globally coupled neurons.
In the uniform case, mean field theory is well defined by averaging over the
network as the... | 1805.03601v3 |
2018-05-25 | Probing the Higgs boson-gluon coupling via the jet energy profile at $e^+e^-$ colliders | The effective coupling of the Higgs boson to a gluon pair is one of the most
important parameters to test the Standard Model and search for the new physics
beyond. In this paper, we propose several new observables based on the jet
energy profile to extract the effective coupling. The statistical uncertainties
of the ef... | 1805.10138v2 |
2008-07-05 | Enhancement of spatiotemporal regularity in an optimal window of random coupling | We investigate the spatiotemporal dynamics of a lattice of coupled chaotic
maps whose coupling connections are dynamically rewired to random sites with
probability p, namely at any instance of time, with probability p a regular
link is switched to a random one. In a range of weak coupling, where
spatiotemporal chaos ex... | 0807.0840v1 |
2009-12-01 | Mode-mode coupling theory of resonant pumping via dynamical tunneling processes in a deformed microcavity | Mode-mode coupling theory is presented for the resonant pumping via dynamical
tunneling processes in a deformed microcavity. From the steady-state solution
of the coupled differential equations of chaotic modes and a high-Q regular
mode, pumping efficiency is obtained as a function of pump detuning, coupling
constants ... | 0912.0164v3 |
2009-12-09 | Vibrations of weakly-coupled nanoparticles | The vibrations of a coupled pair of isotropic silver spheres are investigated
and compared with the vibrations of the single isolated spheres. Situations of
both strong coupling and also weak coupling are investigated using continuum
elasticity and perturbation theory. The numerical calculation of the eigenmodes
of suc... | 0912.1743v2 |
2009-12-17 | Switchable ultrastrong coupling in circuit QED | Superconducting quantum circuits possess the ingredients for quantum
information processing and for developing on-chip microwave quantum optics.
From the initial manipulation of few-level superconducting systems (qubits)
to their strong coupling to microwave resonators, the time has come to consider
the generation an... | 0912.3456v1 |
2009-12-18 | Mutual Coupling of two Semiconductor Quantum Dots via an Optical Nanocavity Mode | We present an experimental and theoretical study of a system consisting of
two spatially separated self-assembled InGaAs quantum dots strongly coupled to
a single optical nanocavity mode. Due to their different size and compositional
profiles, the two quantum dots exhibit markedly different DC Stark shifts. This
allows... | 0912.3685v2 |
2011-11-06 | Testing coupled dark energy with next-generation large-scale observations | Coupling dark energy to dark matter provides one of the simplest way to
effectively modify gravity at large scales without strong constraints from
local (i.e. solar system) observations. Models of coupled dark energy have been
studied several times in the past and are already significantly constrained by
cosmic microwa... | 1111.1404v1 |
2011-11-14 | Probing Quartic Neutral Gauge Boson Couplings using diffractive photon fusion at the LHC | A complete list of operators contributing at the lowest order to Quartic
Neutral Gauge Boson Couplings involving photons and Z-bosons, is presented. We
show that, for the couplings we consider, the lowest order contribution is from
dimension 8 operators in the case when a light Higgs is present and from
dimension 6 ope... | 1111.3354v1 |
2011-11-25 | Quantum theory of intersubband polarons | We present a microscopic quantum theory of intersubband polarons,
quasiparticles originated from the coupling between intersubband transitions
and longitudinal optical phonons. To this aim we develop a second quantized
theory taking into account both the Fr\"ohlich interaction between phonons and
intersubband transitio... | 1111.5916v2 |
2012-03-31 | Long-term fluctuations in globally coupled phase oscillators with general coupling: Finite size effects | We investigate the diffusion coefficient of the time integral of the Kuramoto
order parameter in globally coupled nonidentical phase oscillators. This
coefficient represents the deviation of the time integral of the order
parameter from its mean value on the sample average. In other words, this
coefficient characterize... | 1204.0084v1 |
2012-04-20 | Strong coupling of a spin qubit to a superconducting stripline cavity | We study electron-spin-photon coupling in a single-spin double quantum dot
embedded in a superconducting stripline cavity. With an external magnetic
field, we show that either a spin-orbit interaction (for InAs) or an
inhomogeneous magnetic field (for Si and GaAs) could produce a strong
spin-photon coupling, with a cou... | 1204.4732v2 |
2012-04-27 | Coupling parameter lower bound in Yukawa-Vlasov plasmas | We have analyzed the Vlasov dispersion relation for Yukawa plasmas in three
and two dimensions primarily for the purpose of identifying coupling parameter
domains where the existence of well-developed collective excitations is
forbidden or allowed. First, we have established a rigorous lower bound for the
coupling para... | 1204.6099v1 |
2013-09-04 | Fermi surface renormalization and quantum confinement in the two-coupled chains model | We address the problem of the Fermi surface renormalization and the quantum
confinement regime (QCR) in the two coupled chains model(TCCM) of spinless
fermions. We perform a self-consistent calculation of the renormalization
group(RG) flows of the renormalized TCCM couplings and quasiparticle weight. On
top of that we ... | 1309.0883v2 |
2013-09-04 | Highly efficient coupling from an optical fiber to a nanoscale silicon optomechanical cavity | We demonstrate highly efficient coupling of light from an optical fiber to a
silicon photonic crystal optomechanical cavity. The fiber-to-cavity coupling
utilizes a compact (L ~ 25 um) intermediate adiabatic coupler. The optical
coupling is lithographically controlled, broadband, relatively insensitive to
fiber misalig... | 1309.1181v2 |
2013-09-05 | Effect of spin rotation coupling on spin transport | We have studied the spin rotation coupling(SRC) as an ingredient to explain
different spin related issues. This special kind of coupling can play the role
of a Dresselhaus like coupling in certain conditions. Consequently, one can
control the spin splitting, induced by the Dresselhaus like term, which is
unusual in sem... | 1309.1376v1 |
2013-09-08 | Universal Trimers induced by Spin-Orbit Coupling in Ultracold Fermi Gases | In this letter we address the issue how synthetic spin-orbit (SO) coupling
can strongly affect three-body physics in ultracold atomic gases. We consider a
system which consists of three fermionic atoms, including two spinless heavy
atoms and one spin-1/2 light atom subjected to an isotropic SO coupling. We
find that SO... | 1309.1925v1 |
2013-09-24 | Efficient coupling to an optical resonator by exploiting time-reversal symmetry | The interaction of a cavity with an external field is symmetric under time
reversal. Thus, coupling to a resonator is most efficient when the incident
light is the time reversed version of a free cavity decay, i.e. when it has a
rising exponential shape matching the cavity lifetime. For light entering the
cavity from o... | 1309.6167v1 |
2014-04-30 | Nonlocal coupling effects on single-photon transmission in a one-dimensional waveguide interacted with a side optical cavity | The nonlocal coupling effect between a one-dimensional waveguide (1DW) and a
side optical cavity (SOC) is studied. We first find the real-space Hamiltonian
of the nonlocal-coupling system of the 1DW and SOC, and then derive out an
equation determining the energy of the hybridization state between the 1DW and
SOC modes ... | 1405.0001v1 |
2014-05-15 | Theory on the Dynamics of Oscillatory Loops in the Transcription Factor Networks | We develop a detailed theoretical framework for various types of
transcription factor gene oscillators. We further demonstrate that one can
build genetic-oscillators which are tunable and robust against perturbations in
the critical control parameters by coupling two or more independent
Goodwin-Griffith oscillators thr... | 1405.3881v1 |
2014-05-21 | Numerical Study of a Many-Body Localized System Coupled to a Bath | We use exact diagonalization to study the breakdown of many-body localization
in a strongly disordered and interacting system coupled to a thermalizing
environment. We show that the many-body level statistics cross over from
Poisson to GOE, and the localized eigenstates thermalize, with the crossover
coupling decreasin... | 1405.5515v3 |
2014-05-27 | A Double Take on New Physics in Double Higgs Production | Gluon-initiated double Higgs production is the most important channel to
extract the Higgs self-coupling at hadron colliders. However, new physics could
enter into this channel in several distinctive ways including, but not limited
to, the Higgs self-coupling, a modified top Yukawa coupling, and an anomalous
Higgs-top ... | 1405.7040v1 |
2014-06-02 | Designing frequency-dependent relaxation rates and Lamb shift for a giant artificial atom | In traditional quantum optics, where the interaction between atoms and light
at optical frequencies is studied, the atoms can be approximated as point-like
when compared to the wavelength of light. So far, this relation has also been
true for artificial atoms made out of superconducting circuits or quantum dots,
intera... | 1406.0350v1 |
2014-06-09 | Radiative corrections to the Yukawa couplings in two Higgs doublet models | A pattern of deviations in coupling constants of Standard Model (SM)-like
Higgs boson from their SM predictions indicates characteristics of an extended
Higgs sector. In particular, Yukawa coupling constants can deviate in different
patterns in four types of Two Higgs Doublet Models (THDMs) with a softly-broken
Z_2 sym... | 1406.2236v1 |
2014-06-24 | Mode couplings and resonance instabilities in dust clusters | The normal modes for three to seven particle two-dimensional (2D) dust
clusters in a complex plasma are investigated using an N-body simulation. The
ion wakefield downstream of each particle is shown to induce coupling between
horizontal and vertical modes. The rules of mode coupling are investigated by
classifying the... | 1406.6330v1 |
2014-06-26 | Exact couples in semiabelian categories revisited | Consider an exact couple in a semiabelian category in the sense of Palamodov,
i.e., in an additive category in which every morphism has a kernel as well as a
cokernel and the induced morphism between coimage and image is always monic and
epic. Assume that the morphisms in the couple are strict, i.e., they induce
even i... | 1406.6789v1 |
2016-05-29 | Synchronization failure caused by interplay between noise and network heterogeneity | We investigate synchronization in complex networks of noisy phase
oscillators. We find that, while too weak a coupling is not sufficient for the
whole system to synchronize, too strong a coupling induces a nontrivial type of
phase slip among oscillators, resulting in synchronization failure. Thus, an
intermediate coupl... | 1605.08980v1 |
2016-05-29 | Enhanced light-vapor interactions and all optical switching in a chip scale micro-ring resonator coupled with atomic vapor | The coupling of atomic and photonic resonances serves as an important tool
for enhancing light-matter interactions and enables the observation of
multitude of fascinating and fundamental phenomena. Here, by exploiting the
platform of atomic-cladding wave guides, we experimentally demonstrate the
resonant coupling of ru... | 1605.09008v1 |
2016-08-04 | Phonon blockade in a nanomechanical resonator resonantly coupled to a qubit | We study phonon statistics in a nanomechanical resonator (NAMR) which is
resonantly coupled to a qubit. We find that there are two different mechanisms
for phonon blockade in such a resonantly coupled NAMR-qubit system. One is due
to the strong anharmonicity of the NAMR-qubit system with large coupling
strength; the ot... | 1608.01548v3 |
2016-08-04 | Protected couplings and BPS dyons in half-maximal supersymmetric string vacua | We analyze four- and six-derivative couplings in the low energy effective
action of $D=3$ string vacua with half-maximal supersymmetry. In analogy with
an earlier proposal for the $(\nabla\Phi)^4$ coupling, we propose that the
$\nabla^2(\nabla\Phi)^4$ coupling is given exactly by a manifestly U-duality
invariant genus-... | 1608.01660v1 |
2016-08-05 | Probing light-quark Yukawa couplings via hadronic event shapes at lepton colliders | We propose a novel idea for probing the Higgs boson couplings through the
measurement of hadronic event shape distributions in the decay of the Higgs
boson at lepton colliders. The method provides a unique test of the Higgs boson
couplings and of QCD effects in the decay of the Higgs boson. It can be used to
probe the ... | 1608.01746v2 |
2016-08-18 | Evacuation dynamics of asymmetrically coupled pedestrian pairs | We propose and analyze extended floor field cellular automaton models for
evacuation dynamics of inhomogeneous pedestrian pairs which are coupled by
asymmetric group interactions. Such pairs consist of a leader, who mainly
determines the couple's motion and a follower, who has a defined tendency to
follow the leader. E... | 1608.05439v1 |
2017-06-05 | Multi-clustered chimeras in large semiconductor laser arrays with nonlocal interactions | The dynamics of a large array of coupled semiconductor lasers is studied for
a nonlocal coupling scheme. Our focus is on chimera states, a self-organized
spatio-temporal pattern of co-existing coherence and incoherence. In laser
systems, such states have been previously found for global and nearest-neighbor
coupling, m... | 1706.01314v1 |
2017-06-05 | Coupling emission from single localized defects in 2D semiconductor to surface plasmon polaritons | Coupling of an atom-like emitter to surface plasmons provides a path toward
significant optical nonlinearity, which is essential in quantum information
processing and quantum networks. A large coupling strength requires
nanometer-scale positioning accuracy of the emitter near the surface of the
plasmonic structure, whi... | 1706.01532v1 |
2017-06-19 | Characterization and control of linear coupling using turn-by-turn beam position monitor data in storage rings | We introduce a new application of measuring symplectic generators to
characterize and control the linear betatron coupling in storage rings. From
synchronized and consecutive BPM (Beam Position Monitor) turn-by-turn (TbT)
readings, symplectic Lie generators describing the coupled linear dynamics are
extracted. Four pla... | 1706.06022v1 |
2017-06-21 | Stretched exponential dynamics of coupled logistic maps on a small-world network | We investigate the dynamic phase transition from partially or fully arrested
state to spatiotemporal chaos in coupled logistic maps on a small-world
network. Persistence of local variables in coarse grained sense acts as an
excellent order parameter to study this transition. We investigate the phase
diagram by varying ... | 1706.06840v1 |
2017-10-11 | Is repulsion good for the health of Chimeras? | Yes! Very much so.
A chimera state refers to the coexistence of a coherent-incoherent dynamical
evolution of identically coupled oscillators. We investigate the impact of
multiplexing of a lyer having repulsively coupled oscillators on occurrence of
chimeras in the layer having attractively coupled identical oscillat... | 1710.03905v2 |
2017-10-12 | Aging transition in systems of oscillators with global distributed-delay coupling | We consider a globally coupled network of active (oscillatory) and inactive
(non-oscillatory) oscillators with distributed-delay coupling. Conditions for
aging transition, associated with suppression of oscillations, are derived for
uniform and gamma delay distributions in terms of coupling parameters and the
proportio... | 1710.08383v1 |
2017-10-27 | New type of chimera and mutual synchronization of spatiotemporal structures in two coupled ensembles of nonlocally interacting chaotic maps | We study numerically the dynamics of a network made of two coupled
one-dimensional ensembles of discrete-time systems. The first ensemble is
represented by a ring of nonlocally coupled Henon maps, and the second one - by
a ring of nonlocally coupled Lozi maps. We find that the network of coupled
ensembles can realize a... | 1710.10077v1 |
2017-10-29 | Contact theory for spin-orbit-coupled Fermi gases | We develop the contact theory for spin-orbit-coupled Fermi gases. By using a
perturbation method, we derive analytically the universal two-body behavior at
short distance, which does not depend on the short-range details of interatomic
potentials. We find that two new scattering parameters need to be introduced
because... | 1710.10579v2 |
2017-12-04 | Chimera at the phase-flip transition of an ensemble of identical nonlinear oscillators | A complex collective emerging behavior characterized by coexisting coherent
and incoherent do- mains is termed as a chimera state. We bring out the
existence of a new type of chimera in a nonlocally coupled ensemble of
identical oscillators driven by a common dynamic environment. The latter
facilitates the onset of pha... | 1712.00921v1 |
2017-12-07 | Experiments with arbitrary networks in time-multiplexed delay systems | We report a new experimental approach using an optoelectronic feedback loop
to investigate the dynamics of oscillators coupled on large complex networks
with arbitrary topology. Our implementation is based on a single optoelectronic
feedback loop with time delays. We use the space-time interpretation of systems
with ti... | 1712.02695v2 |
2017-12-08 | Spin-orbit coupling induced valley Hall effects in transition-metal dichalcogenides | In transition-metal dichalcogenides, electrons in the K-valleys can
experience both Ising and Rashba spin-orbit couplings. In this work, we show
that the coexistence of Ising and Rashba spin-orbit couplings leads to a
special type of valley Hall effect, which we call spin-orbit coupling induced
valley Hall effect. Impo... | 1712.02942v2 |
2018-09-04 | Proximity-Induced Spin-Orbit Coupling in Graphene-Bi$_{1.5}$Sb$_{0.5}$Te$_{1.7}$Se$_{1.3}$ Heterostructures | The weak intrinsic spin-orbit coupling in graphene can be greatly enhanced by
proximity coupling. Here we report on the proximity-induced spin-orbit coupling
in graphene transferred by hexagonal boron nitride (hBN) onto the topological
insulator Bi$_{1.5}$Sb$_{0.5}$Te$_{1.7}$Se$_{1.3}$ (BSTS) which was grown on a
hBN s... | 1809.01113v2 |
2018-09-12 | Topological phases in pseudospin-1 Fermi gases with two-dimensional spin-orbit coupling | The recent experimental realization of spin-orbit (SO) coupling for ultracold
bosons and fermions opens an exciting avenue for engineering quantum matter
that may be challenging to realize in solid state materials such as SO coupled
spin-1 fermions. While one-dimensional SO coupling for spin-1 bosons has been
experimen... | 1809.04537v2 |
2018-09-13 | Rise and Fall of Reentrant Phase Transitions in a Coupled Spin-Electron Model on a Doubly Decorated Honeycomb Lattice | Phase diagrams and spontaneous magnetization are rigorously calculated for a
coupled spin-electron model on a doubly decorated honeycomb lattice, which
accounts for a quantum-mechanical hopping of the mobile electrons on decorating
sites, the nearest-neighbor Ising coupling between mobile electrons and
localized spins,... | 1809.04895v1 |
2018-09-20 | Multiple-$Q$ magnetic orders in Rashba-Dresselhaus metals | We study magnetic textures realized in noncentrosymmetric Kondo lattice
models, in which localized magnetic moments weakly interact with itinerant
electrons subject to Rashba and Dresselhaus spin-orbit couplings. By virtue of
state-of-the-art numerical simulations as well as variational calculations, we
uncover versati... | 1809.07582v1 |
2019-09-05 | Polaritonic Coupled-Cluster Theory | We develop coupled-cluster theory for systems of electrons strongly coupled
to photons, providing a promising theoretical tool in polaritonic chemistry
with a perspective of application to all types of fermion-boson coupled
systems. We show benchmark results for model molecular Hamiltonians coupled to
cavity photons. B... | 1909.02401v2 |
2019-09-11 | Probing Higgs couplings to light quarks via Higgs pair production | We consider the potential of the Higgs boson pair production process to probe
the light quark Yukawa couplings. We show within an effective theory
description that the prospects of constraining enhanced first generation light
quark Yukawa couplings in Higgs pair production are similar to other methods
and channels, due... | 1909.05279v2 |
2019-09-13 | Coupling of a whispering gallery mode to a silicon chip with photonic crystal | We demonstrate the efficient coupling (99.5%) of a silica whispering gallery
mode microresonator directly with a silicon chip by using a silicon photonic
crystal waveguide as a coupler. The efficient coupling is attributed to the
small effective refractive index difference between the two devices. The large
group index... | 1909.06029v1 |
2019-09-13 | Effect of the electron-lattice coupling on the charge and magnetic order in rare-earth nickelates | We investigate the impact of electron-lattice coupling on the stability of
various magnetic orders in rare-earth nickelates. We use the Hartree-Fock
approximation, at zero temperature, to study an effective, two-band model with
correlations characterized by a Hubbard $U$ and a Hund's $J$. This is coupled
to breathing-m... | 1909.06449v1 |
2019-09-17 | Low-Dimensional Dynamics for Higher Order Harmonic Globally Coupled Phase Oscillator Ensemble | The Kuramoto model, despite its popularity as a mean-field theory for many
synchronization phenomenon of oscillatory systems, is limited to a first-order
harmonic coupling of phases. For higher-order coupling, there only exists a
low-dimensional theory in the thermodynamic limit. In this paper, we extend the
formulatio... | 1909.07718v3 |
2019-09-18 | Influence of Rashba spin-orbit coupling on the 0-$π$ transition and Kondo temperature in 1D superconductors | Using the framework of the density-matrix renormalization group (DMRG), we
study a quantum dot coupled to a superconducting nanowire with strong Rashba
spin-orbit coupling. Regarding the singlet-to-doublet "0-$\pi$" transition that
takes place when the Kondo effect is overcome by the superconducting gap, we
show that t... | 1909.08486v1 |
2019-09-23 | Evaporation dynamics of the Sachdev-Ye-Kitaev model | In this paper, we study the evaporation dynamics of the Sachdev-Ye-Kitaev
(SYK) model, with an initial temperature $T_\chi$, by coupling it to a thermal
bath with lower temperature $T_\psi<T_\chi$ modeled by a larger SYK model. The
coupling between the small system and the bath is turned on at time $t=0$. Then
the syst... | 1909.10637v2 |
2019-09-29 | Dissipative features of the driven spin-fermion system | We study a generic spin-fermion model, where a two-level system (spin) is
coupled to two metallic leads with different chemical potentials, in the
presence of monochromatic driving fields. The real-time dynamics of the system
is simulated beyond the Markovian limit by an iterative numerically exact
influence functional... | 1909.13276v2 |
2020-12-01 | Multi-ring, stripe, and super-lattice solitons in a spin-orbit coupled spin-1 condensate | We demonstrate exotic stable quasi-two-dimensional solitons in a Rashba or a
Dresselhaus spin-orbit (SO) coupled hyperfine spin-1 ($F=1$) trap-less
antiferromagnetic Bose-Einstein condensate using the mean-field
Gross-Pitaevskii equation. For weak SO coupling, the solitons are of the
$(-1,0,+1)$ or $(+1,0,-1)$ type wit... | 2012.00872v2 |
2020-12-10 | Probing Top Changing Neutral Higgs Couplings at Colliders | The $h(125)$ boson, discovered only in 2012, is lower than the top quark in
mass, hence $t \to ch$ search commenced immediately thereafter, with current
limits at the per mille level and improving. As the $t \to ch$ rate vanishes
with the $h$-$H$ mixing angle $\cos\gamma \to 0$, we briefly review the
collider probes of... | 2012.05735v1 |
2020-12-18 | Superradiant phase transition with cavity assisted dynamical spin-orbit coupling | Superradiant phase transition represents an important quantum phenomenon that
shows the collective excitations based on the coupling between atoms and cavity
modes. The spin-orbit coupling is another quantum effect which induced from the
interaction of the atom internal degrees of freedom and momentum of
center-of-mass... | 2012.10098v1 |
2020-12-28 | Teleparallel axions and cosmology | We consider the most general teleparallel theory of gravity whose action is a
linear combination of the five scalar invariants which are quadratic in the
torsion tensor. Since two of these invariants possess odd parity, they
naturally allow for a coupling to pseudo-scalar fields, thus yielding a
Lagrangian which is eve... | 2012.14423v2 |
2020-12-29 | Self-consistent harmonic approximation with non-local couplings | We derive the self-consistent harmonic approximation for the $2D$ XY model
with non-local interactions. The resulting equation for the variational
couplings holds for any form of the spin-spin coupling as well as for any
dimension. Our analysis is then specialized to power-law couplings decaying
with the distance $r$ a... | 2012.14896v1 |
2020-12-30 | On NS-NS couplings at order $α'^3$ | Recently, imposing the gauge-symmetry and the T-duality constraints on the
string frame effective actions of type II superstring theories, the NS-NS
cuplings have been found in a particular scheme which has 445 couplings in 15
different structures. In this paper, using a field redefinition, we write them
in terms of 25... | 2012.15091v3 |
2020-12-31 | Unified description of saturation and bistability of intersubband transitions in the weak and strong light-matter coupling regimes | We propose a unified description of intersubband absorption saturation for
quantum wells inserted in a resonator, both in the weak and strong light-matter
coupling regimes. We demonstrate how absorption saturation can be engineered.
In particular we show that the saturation intensity increases linearly with the
doping ... | 2012.15633v3 |
2012-05-02 | Fractional periodicity of persistent current in coupled quantum rings | We study the transmission properties of a few-site Hubbard rings with up to
second-nearest neighbor coupling embedded to a ring-shaped lead using exact
diagonalization. The approach captures all the correlation effects and enables
us to include interactions both in the ring and in the ring-shaped lead, and
study on an ... | 1205.0372v1 |
2012-05-14 | Screening Modifications of Gravity through Disformally Coupled Fields | It is shown that extensions to General Relativity, which introduce a strongly
coupled scalar field, can be viable if the interaction has a non-conformal
form. Such disformal coupling depends upon the gradients of the scalar field.
Thus, if the field is locally static and smooth, the coupling becomes invisible
in the so... | 1205.3167v2 |
2012-05-15 | Dynamic Critical Scaling of the Holographic Spin Fluctuations | Criticality with strong coupling is described by a theory in the vicinity of
a non-Gaussian fixed point. The holographic duality conjectures that a theory
at a non-Gaussian fixed point with strong coupling is dual to a gravitational
theory. In this paper, we present a holographic theory in treating the strongly
coupled... | 1205.3267v2 |
2012-05-16 | Strong-coupling dynamics of Bose-Einstein condensate in a double-well trap | Dynamics of the repulsive Bose-Einstein condensate (BEC) in a double-well
trap is explored within the 3D time-dependent Gross-Pitaevskii equation. The
model avoids numerous common approximations (two-mode treatment, time-space
factorization, fixed values of the chemical potential and barrier
penetrability, etc) and thu... | 1205.3687v1 |
2012-05-16 | Strong and tunable mode coupling in carbon nanotube resonators | The non-linear interaction between two mechanical resonances of the same
freely suspended carbon nanotube resonator is studied. We find that in the
Coulomb blockade regime, the non-linear modal interaction is dominated by
single-electron-tunneling processes, and that the mode-coupling parameter can
be tuned with the ga... | 1205.3693v2 |
2012-05-18 | Collective modes of coupled phase oscillators with delayed coupling | We study the effects of delayed coupling on timing and pattern formation in
spatially extended systems of dynamic oscillators. Starting from a discrete
lattice of coupled oscillators, we derive a generic continuum theory for
collective modes of long wavelength. We use this approach to study spatial
phase profiles of ce... | 1205.4127v1 |
2012-05-24 | Anomalous Couplings in Double Higgs Production | The process of gluon-initiated double Higgs production is sensitive to
non-linear interactions of the Higgs boson. In the context of the Standard
Model, studies of this process focused on the extraction of the Higgs trilinear
coupling. In a general parametrization of New Physics effects, however, an even
more interesti... | 1205.5444v2 |
2012-05-29 | Cosmology of a Scalar Field Coupled to Matter and an Isotropy-Violating Maxwell Field | Motivated by the couplings of the dilaton in four-dimensional effective
actions, we investigate the cosmological consequences of a scalar field coupled
both to matter and a Maxwell-type vector field. The vector field has a
background isotropy-violating component. New anisotropic scaling solutions
which can be responsib... | 1205.6261v2 |
2012-05-30 | Plasmonics of coupled graphene micro-structures | The optical response of graphene micro-structures, such as micro-ribbons and
disks, is dominated by the localized plasmon resonance in the far infrared (IR)
spectral range. An ensemble of such structures is usually involved and the
effect of the coupling between the individual structures is expected to play an
importan... | 1205.6841v1 |
2017-05-01 | $X(4260)$ Revisited: A Coupled Channel Perspective | We calculate the probabilities of various charmed meson molecules for
$X(4260)$ under the framework of ${}^3P_0$ model. The results indicate that
even though heavy quark spin symmetry forbids $S$ wave coupling of $D_1\bar{D}$
to the ${}^3S_1$ charmonia ($\psi(nS)$), the $D$ wave coupling is allowed and
not negligible. ... | 1705.00449v4 |
2017-05-03 | Equilibration and hydrodynamics at strong and weak coupling | We give an updated overview of both weak and strong coupling methods to
describe the approach to a plasma described by viscous hydrodynamics, a process
now called hydrodynamisation. At weak coupling the very first moments after a
heavy ion collision is described by the colour-glass condensate framework, but
quickly the... | 1705.01556v1 |
2017-05-22 | On work and heat in time-dependent strong coupling | This paper revisits the classical problem of representing a thermal bath
interacting with a system as a large collection of harmonic oscillators
initially in thermal equilibrium. As is well known the system then obeys an
equation, which in the bulk and in the suitable limit tends to the
Kramers-Langevin equation of phy... | 1705.07811v1 |
2017-05-26 | SU(4) flavor symmetry breaking in D-meson couplings to light hadrons | The validity of SU(4)-flavor symmetry relations of couplings of charmed $D$
mesons to light mesons and baryons is examined with the use of $^3{\rm P}_0$
quark-pair creation model and nonrelativistic quark model wave functions. We
focus on the three-meson couplings $\pi\pi\rho$, $KK\rho$ and $DD\rho$ and
baryon-baryon-m... | 1705.09408v1 |
2017-08-31 | Temperature dependence of interlayer coupling in perpendicular magnetic tunnel junctions with GdOx barriers | Perpendicular magnetic tunnel junctions with GdOX tunneling barriers have
shown a unique voltage controllable interlayer magnetic coupling effect. Here
we investigate the quality of the GdOX barrier and the coupling mechanism in
these junctions by examining the temperature dependence of the tunneling
magnetoresistance ... | 1709.00040v3 |
2017-09-08 | Qubit absorption refrigerator at strong coupling | We demonstrate that a quantum absorption refrigerator can be realized from
the smallest quantum system, a qubit, by coupling it in a non-additive (strong)
manner to three heat baths. This function is un-attainable for the qubit model
under the weak system-bath coupling limit, when the dissipation is additive. In
an opt... | 1709.02835v1 |
2017-09-11 | Controlling the superconducting transition by spin-orbit coupling | Whereas there exists considerable evidence for the conversion of singlet
Cooper pairs into triplet Cooper pairs in the presence of inhomogeneous
magnetic fields, recent theoretical proposals have suggested an alternative way
to exert control over triplet generation: intrinsic spin-orbit coupling in a
homogeneous ferrom... | 1709.03504v2 |
2017-09-21 | Upper bound on the Abelian gauge coupling from asymptotic safety | We explore the impact of asymptotically safe quantum gravity on the Abelian
gauge coupling in a model including a charged scalar, confirming indications
that asymptotically safe quantum fluctuations of gravity could trigger a
power-law running towards a free fixed point for the gauge coupling above the
Planck scale. Si... | 1709.07252v1 |
2017-09-25 | Asymmetric cluster and chimera dynamics in globally coupled systems | We investigate the emergence of chimera and cluster states possessing
asymmetric dynamics in globally coupled systems, where the trajectories of
oscillators belonging to different subpopulations exhibit different dynamical
properties. In an asymmetric chimera state, the trajectory of an element in the
synchronized subs... | 1709.08663v2 |
2018-03-01 | A correlation-hole approach to the electric double layer with counter-ions only | We study a classical system of identically charged counter-ions near a planar
wall carrying a uniform surface charge density. The equilibrium statistical
mechanics of the system depends on a single dimensionless coupling parameter. A
new self-consistent theory of the correlation-hole type is proposed which leads
to a m... | 1803.00359v1 |
2018-03-09 | Dissipative vs dispersive coupling in quantum opto-mechanics: squeezing ability and stability | Generation of squeezed light and optomechanical instability for dissipative
type of opto- mechanical coupling is theoretically addressed for a cavity with
the input mirror, serving as a mechanical oscillator, or an equivalent system.
The problem is treated analytically for the case of resonance excitation or
small detu... | 1803.03470v1 |
2018-03-21 | Spinning boson stars and hairy black holes with non-minimal coupling | We obtain spinning boson star solutions and hairy black holes with
synchronised hair in the Einstein-Klein-Gordon model, wherein the scalar field
is massive, complex and with a non-minimal coupling to the Ricci scalar. The
existence of these hairy black holes in this model provides yet another
manifestation of the univ... | 1803.08149v1 |
2018-03-24 | A Tri-Mode Coupled Coil with Tunable Focal Point Adjustment for Bio-Medical Applications | The paper proposes the design of a tri-mode coupled coil which enables three
modes of operation for inducing electromagnetic field, where the focal
adjustment of the E field can be optimized. Methods: The setup consists of two
identical figure-of-eight coils, namely coil 1 and coil 2, coupled to each
other by magnetic ... | 1803.09062v1 |
2018-06-02 | Control of Hierarchical Networks by Coupling to an External Chaotic System | We explore the behaviour of chaotic oscillators in hierarchical networks
coupled to an external chaotic system whose intrinsic dynamics is dissimilar to
the other oscillators in the network. Specifically, each oscillator couples to
the mean-field of the oscillators below it in the hierarchy, and couples
diffusively to ... | 1806.00677v1 |
2018-06-05 | Frequency locking and controllable chaos through exceptional point in optomechanics | We engineer mechanical gain (loss) in system formed by two optomechanical
cavities (OMCs), that are mechanically coupled. The gain (loss) is controlled
by driving the resonator with laser that is blue (red) detuned. We predict
analytically the existence of multiple exceptional points (EPs), a form of
degeneracy where t... | 1806.01587v2 |
2018-06-08 | Coupled-Mode Theory for Stationary and Nonstationary Resonant Sound Propagation | We present a complete analytical derivation of the equations used for
stationary and nonstationary wave systems regarding resonant sound transmission
and reflection described by the phenomenological Coupled-Mode Theory. We
calculate the propagating and coupling parameters used in Coupled-Mode Theory
directly by utilizi... | 1806.02971v1 |
2018-06-10 | Coupling field dependent quantum interference effects in a $Λ$-system of $^{87}Rb$ atom | A $\Lambda$-system in $D_2$ line transition of the $^{87}Rb$ atom has been
investigated for quantum interference effects for different configurations of
coupling field. With a travelling wave coupling field (co-propagating with
probe field), the probe beam shows the earlier known electromagnetically
induced transparenc... | 1806.03588v1 |
2018-06-11 | Perfect quantum state transfer in a superconducting qubit chain with parametrically tunable couplings | Faithfully transferring the quantum state is essential for quantum
information processing. Here we demonstrate a fast (in 84 ns) and high-fidelity
(99.2%) transfer of arbitrary quantum states in a chain of four superconducting
qubits with nearest-neighbor coupling. This transfer relies on full control of
the effective ... | 1806.03886v2 |
2018-06-18 | $R_{K^{(*)}}$ and the origin of Yukawa couplings | We explore the possibility that the semi-leptonic $B$ decay ratios
$R_{K^{(*)}}$ which violate $\mu - e$ universality are related to the origin of
the fermion Yukawa couplings in the Standard Model. Some time ago, a
vector-like fourth family (without a $Z'$) was used to generate fermion mass
hierarchies and mixing patt... | 1806.06780v2 |
2018-06-24 | Lowering the self-coupling of the scalar field in a generalized Higgs inflation | We study cosmological dynamics of a generalized Higgs inflation. By expanding
the action up to the second and third order in the small perturbations, we
study the primordial perturbation and its non-Gaussian distribution. We study
the non-Gaussian feature in both the equilateral and orthogonal configurations.
By adopti... | 1806.09129v1 |
2018-06-24 | Single-photon controlled thermospin transport in a resonant ring-cavity system | Cavity-coupled nanoelectric devices hold great promise for quantum technology
based on coupling between electron-spins and photons. In this study, we
approach the description of these effects through the modeling of a nanodevice
using a quantum master equation. We assume a quantum ring is coupled to two
external leads ... | 1806.09212v1 |
2018-06-26 | Modelling Joint Lifetimes of Couples by Using Bivariate Phase-type Distributions | Many insurance products and pension plans provide benefits which are related
to couples, and thus under influence of the survival status of two lives. Some
studies show the future lifetime of couples is correlated. Three reasons are
available to confirm this fact: (1) catastrophe events that affect both lives,
(2) the ... | 1806.10111v1 |
2018-06-27 | A Universal Bound on the Strong Coupling Scale of a Gravitationally Coupled Massive Spin-2 Particle | We find a model-independent upper bound on the strong coupling scale for a
massive spin-2 particle coupled to Einstein gravity. Our approach is to
directly construct tree-level scattering amplitudes for these degrees of
freedom and use them to find the maximum scale of perturbative unitarity
violation. The highest scal... | 1806.10607v2 |
2018-07-08 | Deterministic positioning of colloidal quantum dots on silicon nitride nanobeam cavities | Engineering an array of precisely located cavity-coupled active media poses a
major experimental challenge in the field of hybrid integrated photonics. We
deterministically position solution processed colloidal quantum dots (QDs) on
high quality-factor silicon nitride nanobeam cavities and demonstrate
light-matter coup... | 1807.02760v1 |
2018-07-12 | The effect of strong electron-rattling phonon coupling on some superconducting properties | Using the Eliashberg theory of superconductivity we have examined several
properties of a model in which electrons are coupled only to rattling phonon
modes represented by a sharp peak in the electron-phonon coupling function. Our
choice of parameters was guided by experiments on $\beta$-pyrochlore oxide
superconductor... | 1807.04658v1 |
2018-07-21 | Photon statistics of radiation emitted by two quantum wells embedded in two optically coupled semiconductor microcavities | We study theoretically the photon statistics of the field emitted from two
optically coupled semiconductor microcavities each containing a quantum well.
The emission is determined by the interplay between exciton-photon coupling in
each quantum well and internal interaction between the two optically coupled
microcaviti... | 1807.08122v1 |
2018-12-03 | Generalized superconductors from the coupling of a scalar field to the Einstein tensor and their refractive index in massive gravity | We construct the generalized superconductors from the coupling of a scalar
field to the Einstein tensor in the massive gravity and investigate their
negative refraction in the probe limit. We observe that the larger graviton
mass and Einstein tensor coupling parameters both hinder the formation of the
condensation, but... | 1812.00649v1 |
2018-12-05 | Acoustic meta-atom with maximum Willis coupling | Acoustic metamaterials are structures with exotic acoustic properties, having
promising applications in acoustic beam steering, focusing, impedance matching,
absorption and isolation. Recent work has shown that the efficiency of many
acoustic metamaterials can be enhanced by controlling an additional parameter
known as... | 1812.02318v1 |
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