publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2016-01-12 | Guiding, bending, and splitting of coupled defect surface modes in a surface-wave photonic crystal | We experimentally demonstrate a type of waveguiding mechanism for coupled
surface-wave defect modes in a surface-wave photonic crystal. Unlike
conventional spoof surface plasmon waveguides, waveguiding of coupled
surface-wave defect modes is achieved through weak coupling between tightly
localized defect cavities in an... | 1601.02736v1 |
2016-06-15 | Double shadow of a regular phantom black hole as photons couple to Weyl tensor | We have studied the shadow of a regular phantom black hole as photons couple
to Weyl tensor. We find that the coupling yields that photons with different
polarization directions propagate along different paths in the spacetime so
that there exits double shadow for a black hole, which is quite different from
that in the... | 1606.04634v2 |
2017-02-23 | Current in nanojunctions : Effects of reservoir coupling | We study the effect of system reservoir coupling on currents flowing through
quantum junctions. We consider two simple double-quantum dot configurations
coupled to two external fermionic reservoirs and study the net current flowing
between the two reservoirs. The net current is partitioned into currents
carried by the ... | 1702.07122v2 |
2017-08-16 | Amplitude death in a ring of nonidentical nonlinear oscillators with unidirectional coupling | We study the collective behaviors in a ring of coupled nonidentical nonlinear
oscillators with unidirectional coupling, of which natural frequencies are
distributed in a random way. We find the amplitude death phenomena in the case
of unidirectional couplings and discuss the differences between the cases of
bidirection... | 1708.04736v1 |
2017-08-16 | Inductively shunted transmon qubit with tunable transverse and longitudinal coupling | We present the design of an inductively shunted transmon qubit with
flux-tunable coupling to an embedded harmonic mode. This circuit construction
offers the possibility to flux-choose between pure transverse and pure
longitudinal coupling, that is coupling to the $\sigma_x$ or $\sigma_z$ degree
of freedom of the qubit.... | 1708.04917v2 |
2018-04-11 | Analysis of the non-stationary model of coupled oscillators with inductive coupling | The model of coupled oscillators plays an important role in modern physics.
It is used for description of various processes: from vibrations atoms in solid
states to electromagnetic oscillations in slow-wave structures. The model with
short-range coupling is the most widely used, for which a separate oscillator
is coup... | 1804.03832v1 |
2018-04-23 | Demonstration of an effective ultrastrong coupling between two oscillators | When the coupling rate between two quantum systems becomes as large as their
characteristic frequencies, it induces dramatic effects on their dynamics and
even on the nature of their ground state. The case of a qubit coupled to a
harmonic oscillator in this ultrastrong coupling regime has been investigated
theoreticall... | 1804.08705v1 |
2018-11-18 | The inverse problem of two-state quantum systems with non-adiabatic static linear coupling | We consider the inverse problem of determining the coupling coefficients in a
two-state Schr\"odinger system. We prove a Lipschitz stability inequality for
the zeroth and first order coupling terms by finitely many partial lateral
measurements of the solution to the coupled Schr\"odinger equations. | 1811.07302v2 |
2014-03-03 | Electromagnetically induced transparency like transmission in a metamaterial composed of cut-wire pairs with indirect coupling | We theoretically and numerically investigate metamaterials composed of
coupled resonators with indirect coupling. First, we theoretically analyze a
mechanical model of coupled resonators with indirect coupling. The theoretical
analysis shows that an electromagnetically induced transparency (EIT)-like
phenomenon with a ... | 1403.0400v1 |
2014-03-04 | Nonminimal GUT inflation after Planck results | In the present work we study GUT Coleman-Weinberg inflation with a nonminimal
coupling to gravity. In this kind of model one usually finds that either the
nonminimal coupling is large or the inflaton self-coupling in unnaturally
small. We have shown here that the model is in agreement with the recent
results from Planc... | 1403.0931v1 |
2017-01-11 | Signatures of strong coupling on nanoparticles: Revealing absorption anticrossing by tuning the dielectric environment | Strongly coupled plasmon-exciton systems offer promising applications in
nanooptics. The classification of the coupling regime is currently debated both
from experimental and theoretical perspectives. We present a method to
unambiguously identify strong coupling in plasmon-exciton core-shell
nanoparticles by measuring ... | 1701.02907v1 |
2018-04-28 | Spin-1 Bosons in the Presence of Spin-orbit Coupling | In this paper, I'm going to talk about the theoretical and experimental
progress in studying spin-orbit coupled spin-1 bosons. Realization of
spin-orbit coupled quantum gases opens a new avenue in cold atom physics. In
particular, the interplay between spin-orbit coupling and inter-atomic
interaction leads to many intr... | 1805.00001v1 |
2009-12-03 | Critical coupling in a system of two coupled negative index medium layers | We study critical coupling (CC) in a system of two coupled negative index
medium (NIM) layers leading to near-total suppression of both reflection and
transmission at specified frequencies. The tunability of the CC frequency is
demonstrated by varying the angle of incidence retaining the full causal
response for the NI... | 0912.0575v1 |
2012-04-12 | Symmetric coupling of four spin-1/2 systems | We address the non-binary coupling of identical angular momenta based upon
the representation theory for the symmetric group. A correspondence is pointed
out between the complete set of commuting operators and the
reference-frame-free subsystems. We provide a detailed analysis of the coupling
of three and four spin-1/2... | 1204.2615v1 |
2014-06-03 | Comparing electron-phonon coupling strength in diamond, silicon and silicon carbide: First-principles study | Renormalization of the electronic band gap due to electron-phonon coupling in
the tetrahedral semiconductors diamond, silicon and cubic silicon carbide is
studied from first principles. There is a marked difference between the
coupling of the vibrational state to the valence band maximum and to the
conduction band mini... | 1406.0654v1 |
2017-06-15 | Thermal rectification and negative differential thermal conductance in harmonic chains with nonlinear system-bath coupling | Thermal rectification and negative differential thermal conductance were
realized in harmonic chains in this work. We used the generalized
Caldeira-Leggett model to study the heat flow. In contrast to the most previous
studies considering only the linear system-bath coupling, we considered the
nonlinear system-bath cou... | 1706.04706v1 |
2017-06-26 | Fluctuating, Lorentz-force-like coupling of Langevin equations and heat flux rectification | In a description of physical systems with Langevin equations, interacting
degrees of freedom are usually coupled through symmetric parameter matrices.
This coupling symmetry is a consequence of time-reversal symmetry of the
involved conservative forces. If coupling parameters fluctuate randomly, the
resulting noise is ... | 1706.08367v3 |
2017-12-11 | Discrete Shilnikov attractor and chaotic dynamics in the system of five identical globally coupled phase oscillators with biharmonic coupling | We argue that a discrete Shilnikov attractor exists in the system of five
identical globally coupled phase oscillators with biharmonic coupling. We
explain the scenario that leads to birth of this kind of attractor and
numerically illustrate the sequence of bifurcations that supports our
statement. | 1712.03839v1 |
2020-12-08 | Conditional Stability of Coefficients Inverse Problem for Strongly Coupled Schrödinger Equations | This paper concerns inverse problems for strongly coupled Schr\"odinger
equations. The purpose of this inverse problem is to retrieve a stationary
potential in the strongly coupled Schr\"odinger equations from either boundary
or internal measurements. Two stability results are derived from a new Carleman
estimate for t... | 2012.04292v1 |
2020-12-29 | Nonreciprocal Multi-mode and Indirect Couplings in Cavity Magnonics | We investigate the magnon-photon couplings by employing a small magnet within
an irregular resonant cavity, which leads to a desirable nonreciprocity with a
big isolation ratio. Moreover, the higher-order couplings between the spin wave
modes with the polarized photon modes also exhibit the nonreciprocity. These
coupli... | 2012.14765v2 |
2020-12-30 | Non-equilibrium effects on electron-phonon coupling constant in metals | Understanding of the energy exchange between electrons and phonons in metals
is important for micro- and nano-manufacturing and system design. The
electron-phonon (e-ph) coupling constant is to describe such exchange strength,
yet its variation remains still unclear at micro- and nanoscale where the
non-equilibrium eff... | 2012.15129v1 |
2017-09-26 | Enhancing cavity QED via anti-squeezing: synthetic ultra-strong coupling | We present and analyze a method where parametric (two-photon) driving of a
cavity is used to exponentially enhance the light-matter coupling in a generic
cavity QED setup, with time-dependent control. Our method allows one to enhance
weak-coupling systems, such that they enter the strong coupling regime (where
the coup... | 1709.09091v1 |
2018-03-09 | Spin-vorticity coupling in viscous electron fluids | We consider spin-vorticity coupling - the generation of spin polarization by
vorticity - in viscous two-dimensional electron systems with spin-orbit
coupling. We first derive hydrodynamic equations for spin and momentum
densities in which their mutual coupling is determined by the rotational
viscosity. We then calculat... | 1803.03549v1 |
2018-03-12 | The Hagedorn temperature of AdS5/CFT4 at finite coupling via the Quantum Spectral Curve | Building on the recently established connection between the Hagedorn
temperature and integrability [Phys.Rev.Lett. 120 (2018) no.7, 071605], we show
how the Quantum Spectral Curve formalism can be used to calculate the Hagedorn
temperature of AdS5/CFT4 for any value of the 't Hooft coupling. We solve this
finite system... | 1803.04416v2 |
2018-03-19 | Solving coupled problems of lumped parameter models in a platform for severe accidents in nuclear reactors | This paper focuses on solving coupled problems of lumped parameter models.
Such problems are of interest for the simulation of severe accidents in nuclear
reactors~: these coarse-grained models allow for fast calculations for
statistical analysis used for risk assessment and solutions of large problems
when considering... | 1803.07016v1 |
2018-07-18 | Coupled-Ring Resonance and Unitary Groups | The group-theoretic content of photonic coupled microrings resonance
phenomena is shown, in particular, an interesting emergence of pseudo-unitary
group. The application to the resonance condition in a tri-microring
configuration is solved exactly. A practical application of this work will be
in the resonance frequency... | 1807.06773v1 |
2018-12-19 | Logarithmic Stability for Coefficients Inverse Problem of Coupled Schrödinger Equations | In this paper, we study an inverse coefficients problem for two coupled
Schr\"{o}dinger equations with an observation of one component of the solution.
The observation is done in a nonempty open subset of the domain where the
equations hold. A logarithmic type stability result is obtained. The main
method is based on t... | 1812.07820v1 |
2019-08-05 | On the Relationship Between Coupling and Refactoring: An Empirical Viewpoint | [Background] Refactoring has matured over the past twenty years to become
part of a developer's toolkit. However, many fundamental research questions
still remain largely unexplored. [Aim] The goal of this paper is to investigate
the highest and lowest quartile of refactoring-based data using two coupling
metrics - the... | 1908.01501v1 |
2019-12-13 | A review of Local-to-Nonlocal coupling methods in nonlocal diffusion and nonlocal mechanics | Local-to-Nonlocal (LtN) coupling refers to a class of methods aimed at
combining nonlocal and local modeling descriptions of a given system into a
unified coupled representation. This allows to consolidate the accuracy of
nonlocal models with the computational expediency of their local counterparts,
while often simulta... | 1912.06668v1 |
2016-10-20 | The convergence problem in mean field games with a local coupling | The paper studies the convergence, as $N$ tends to infinity, of a system of
$N$ coupled Hamilton-Jacobi equations (the Nash system) when the coupling
between the players becomes increasingly singular. The limit equation is a mean
field game system with local coupling. | 1610.06410v2 |
2017-07-13 | Optimal coupling patterns in interconnected communication networks | Traffic dynamics on single or isolated complex networks has been extensively
studied in the past decade. Recently, several coupled network models have been
developed to describe the interactions between real-world networked systems. In
a system of interconnected networks, the coupling links refer to the physical
links ... | 1707.03966v2 |
2017-07-30 | Effect of off-diagonal exciton-phonon coupling on intramolecular singlet fission | Intramolecular singlet fission (iSF) materials provide remarkable advantages
in terms of tunable electronic structures, and quantum chemistry studies have
indicated strong electronic coupling modulation by high frequency phonon modes.
In this work, we formulate a microscopic model of iSF with simultaneous
diagonal and ... | 1707.09619v1 |
2019-05-26 | Minimal independent couplings at order $α'^2$ | Using field redefinitions and Bianchi identities on the general form of the
effective action for metric, $B$-field and dilaton, we have found that the
minimum number of independent couplings at order $\alpha'^2$ is 60. We write
these couplings in two different schemes in the string frame. In the first
scheme, each coup... | 1905.10800v1 |
2020-06-27 | Multiple Chaotic Attractors in Coupled Lorenz Systems | Unidirectionally coupled Lorenz systems in which the drive possesses a
chaotic attractor and the response admits two stable equilibria in the absence
of the driving is under investigation. It is found that double chaotic
attractors coexist in the dynamics. The approach is applicable for chains of
coupled Lorenz systems... | 2006.15364v1 |
2021-02-01 | Minimal gauge invariant couplings at order $\ell_p^6$ in M-theory | Removing the field redefinitions, the Bianchi identities and the total
derivative freedoms from the general form of the gauge invariant couplings at
order $\ell_p^6$ for the bosonic fields of M-theory, we have found that the
minimum number of independent couplings in the structures with even number of
the three-form, i... | 2102.00639v2 |
2021-02-22 | Transition in the spectral gap of the massless overlap Dirac operator coupled to abelian fields in three dimensions | The low lying spectrum of the massless overlap Dirac operator coupled to
abelian fields in three dimensions with three different measures are shown to
exhibit two phases: a strong coupling gapped phase and a weak coupling gapless
phase. The vanishing of the gap from the strong coupling side with a Maxwell
and a conform... | 2102.11367v1 |
2013-06-12 | Contribution of the Electron-Phonon Coupling to the Pairing Interaction in LiFeAs | The coupling strengths for intra- and inter-band electron-phonon pair
scattering are calculated for LiFeAs. While the sum of these couplings, which
gives the total electron-phonon coupling $\lambda$, is of order 0.2, we find
that their contribution to the presumed $s^\pm$ superconducting state is
reduced by approximate... | 1306.2925v1 |
2013-06-18 | The confinement induced resonance in spin-orbit coupled cold atoms with Raman coupling | We investigate the confinement induced resonance in spin-orbit coupled cold
atoms with Raman coupling. We find that the quasi-bound levels induced by the
spin-orbit coupling and Raman coupling result in the Feshbach-type resonances.
For sufficiently large Raman coupling, the bound states in one dimension exist
only for... | 1306.4099v5 |
2016-09-06 | Methods for calculation of the coupling coefficients in the Coupling Cavity Model of arbitrary chain of resonators | We present the short description of the methods for calculation of the
coupling coefficients in the Coupling Cavity Model of arbitrary chain of
resonators. In the first part the procedure that is based on the Mode Matching
Method is given. Then we present the new method that used only one eigen
vector. | 1609.01481v1 |
2018-01-26 | Some Spectrum Property of Periodic Coupling AMO Operator | We study spectrum of the periodic coupling AMO model. Meantime there
establish the continuity of Lyapunov exponent about the the periodic coupling
of AMO model. Through the dynamical method can find a interval the AMO model
only have absolutely continuous spectrum. At the same time, some condition make
the periodic cou... | 1801.08826v1 |
2019-06-24 | Coupled-wire constructions: a Luttinger liquid approach to topology | Coupled-wire constructions use bosonization to analytically tackle the strong
interactions underlying fractional topological states of matter. We give an
introduction to this technique, discuss its strengths and weaknesses, and
provide an overview of the main achievements of coupled-wire constructions. | 1906.09771v2 |
2019-07-02 | Coupling microwave photons to a mechanical resonator using quantum interference | In recent years, the field of microwave optomechanics has emerged as leading
platform for achieving quantum control of macroscopic mechanical objects.
Implementations of microwave optomechanics to date have coupled microwave
photons to mechanical resonators using a moving capacitance. While simple and
effective, the ca... | 1907.01418v1 |
2019-07-25 | Unusual Transport Properties with Non-Commutative System-Bath Coupling Operators | Understanding non-equilibrium heat transport is crucial for controling heat
flow in nano-scale systems. We study thermal energy transfer in a generalized
non-equilibrium spin-boson model (NESB) with non-commutative system-bath
coupling operators and discover unusual transport properties. Compared to the
conventional NE... | 1907.11262v1 |
2019-10-25 | Electronic structure and transport properties of coupled CdS/ZnSe quantum dots | Electronic structure and transport characteristics of coupled CdS and ZnSe
quantum dots are studied using density functional theory and non equilibrium
Greens function method respectively. Our investigations show that in these
novel coupled dots, the frontier occupied and unoccupied molecular orbitals are
spatially loc... | 1910.11813v2 |
2020-07-27 | Enhancement of dynamical robustness in a mean-field coupled network through self-feedback delay | In this article, we propose a very efficient technique to enhance the
dynamical robustness for a network of mean-field coupled oscillators
experiencing aging transition. In particular, we present a control mechanism
based on delayed negative self-feedback, which can effectively enhance
dynamical activities in a mean-fi... | 2007.13405v1 |
2020-08-26 | Couplings, generalized couplings and uniqueness of invariant measures | We provide sufficient conditions for uniqueness of an invariant probability
measure of a Markov kernel in terms of (generalized) couplings. Our main
theorem generalizes previous results which require the state space to be
Polish. We provide an example showing that uniqueness can fail if the state
space is separable and... | 2008.11581v1 |
2021-01-18 | Phase and amplitude dynamics of coupled oscillator systems on complex networks | We investigated the locking behaviors of coupled limit-cycle oscillators with
phase and amplitude dynamics. We focused on how the dynamics are affected by
inhomogeneous coupling strength and by angular and radial shifts in the
coupling function. We performed mean-field analyses of oscillator systems with
inhomogeneous ... | 2101.06913v1 |
2021-01-27 | Microcavity phonon polaritons from weak to ultrastrong phonon-photon coupling | Strong coupling between molecular vibrations and microcavity modes has been
demonstrated to modify physical and chemical properties of the molecular
material. Here, we study the much less explored coupling between lattice
vibrations (phonons) and microcavity modes. Embedding thin layers of hexagonal
boron nitride (hBN)... | 2101.11468v1 |
2021-05-28 | Superfluidity breakdown of Rabi-coupled two-component Bose-Einstein condensates in optical lattices | We demarcate the unstable regimes of superfluids in a Rabi-coupled
two-component Bose-Einstein condensate in the presence of optical lattices. We
find that the Rabi coupling can stabilize superfluids. A significant separation
between Landau and dynamical instabilities is presented in a Rabi-coupled
Zeeman lattice. | 2105.13682v1 |
2021-06-25 | A Time-domain Approach to the Design of Coupled-Resonator Microstrip Filters | Coupled-resonator microstrip filters are among the most versatile filter
topologies. A known design approach uses full-wave electromagnetic simulations
to determine the coupling coefficient between resonators as a function of their
relative position. This could be done using time-domain simulations using a
fast Fourier... | 2106.13737v1 |
2021-07-09 | Effect of Rashba spin-orbit and Rabi couplings on the excitation spectrum of binary Bose-Einstein condensates | We present the collective excitation spectrum analysis of binary
Bose-Einstein condensates (BECs) with spin-orbit (SO) and Rabi couplings in a
quasi-two-dimensional system. In particular, we investigate the role of SO and
Rabi coupling strengths in determining the dynamical stability of the coupled
BECs using Bogoliubo... | 2107.04237v1 |
2021-07-21 | Coupled embeddability | We introduce the notion of coupled embeddability, defined for maps on
products of topological spaces. We use known results for nonsingular biskew and
bilinear maps to generate simple examples and nonexamples of coupled
embeddings. We study genericity properties for coupled embeddings of smooth
manifolds, extend the Whi... | 2107.09816v1 |
2021-10-04 | Using C++ to Calculate $\mathsf{SO(10)}$ Tensor Couplings | \noindent Model building in $\mathsf{SO(10)}$, which is the leading grand
unification framework, often involves large Higgs representations and their
couplings. Explicit calculations of such couplings is a multi-step process that
involves laborious calculations that are time-consuming and error-prone, an
issue which on... | 2110.01702v1 |
2021-10-07 | Twist-diameter coupling drives DNA twist changes by salt and temperature | DNA deformations play crucial roles in many biological processes and material
applications. During DNA deformation, DNA structural parameters often exhibit
non-trivial and counterintuitive couplings, such as the twist-stretch and
twist-bending couplings. Here, we reveal an unexpectedly strong negative
twist-diameter co... | 2110.03495v1 |
2022-03-21 | Energy analysis of bursting Hindmarsh-Rose neurons with time-delayed coupling | Mathematical modeling is an important tool to study the role of delay in
neural systems and to evaluate its effects on the signaling activity of coupled
neurons. Models for delayed neurons are often used to represent the dynamics of
real neurons, but rarely to assess the energy required to maintain these
dynamics. In t... | 2203.11252v1 |
2022-05-04 | Mechanical coupling effects of 2D lattices uncovered by decoupled micropolar elasticity tensor and symmetry operation | Mechanical couplings such as axial-shear and axial-bending have great
potential in the design of active mechanical metamaterials with directional
control of input and output loads in sensors and actuators. However, the
current ad hoc design of mechanical coupling without theoretical support of
elasticity cannot provide... | 2205.02062v1 |
2022-07-07 | Mechanical couplings of 3D lattice materials discovered by micropolar elasticity and geometric symmetry | Similar to Poisson's effect, mechanical coupling is a directional indirect
response by a directional input loading. With the advance in manufacturing
techniques of 3D complex geometry, architected materials with unit cells of
finite volume rather than a point yield more degrees of freedom and foster
exotic mechanical c... | 2207.03117v2 |
2022-07-11 | Explosive synchronization in coupled nonlinear oscillators on multiplex network | We report the emergence of explosive synchronization in a multiplex network
where oscillators on the first layer are coupled with attractive coupling and
those on the second layer, coupled with repulsive coupling. With Stuart-Landau
and FitzHugh-Nagumo oscillators as the nodal dynamics, we consider non-local
and mean-f... | 2207.04822v2 |
2022-09-03 | Single photon controlled steady state electron transport through a resonance DQD-Cavity system in a strong coupling regime | We perform theoretical calculations to study steady-state electron transport
in a double quantum dot, DQD, coupled to a quantized cavity photon field both
in resonance and off-resonance regimes considering weak and strong coupling. In
the resonant strong coupling regime, photon exchanges between the energy states
of th... | 2209.01495v1 |
2022-10-19 | Berezinskii-Kosterlitz-Thouless phase transition with Rabi-coupled bosons | We theoretically investigate the superfluid-normal-state
Berezinskii-Kosterlitz-Thouless transition in a binary mixture of bosonic atoms
with Rabi coupling under balanced densities. We find the nonmonotonic behavior
of the transition temperature with respect to the intercomponent coupling and
amplification of the trans... | 2210.10866v2 |
2022-11-15 | Energy Transport Induced by Transition from Weak to Strong Coupling Regime Between Non-Hermitian systems | Recently, strong coupling between non-Hermitian physical systems of different
nature is widely investigated due to it endows them with new properties. In
this work, we investigate the energy transport between strongly coupled
systems. We use a partial-secular approach for the description of an open
quantum system to in... | 2211.08484v1 |
2022-11-21 | Mean-Field Coupled Systems and Self-Consistent Transfer Operators: A Review | In this review we survey the literature on mean-field coupled maps. We start
with the early works from the physics literature, arriving to some recent
results from ergodic theory studying the thermodynamic limit of globally
coupled maps and the associated self-consistent transfer operators. We also
give few pointers to... | 2211.11245v1 |
2022-11-28 | Forward-backward stochastic differential equations driven by G-Brownian motion under weakly coupling condition | In this paper, we obtain the existence and uniqueness theorem of
$L^{p}$-solution for coupled forward-backward stochastic differential equations
driven by G-Brownian motion (G-FBSDEs) with arbitrary $T$ under weakly coupling
condition. Specially, the result for $p\in(1,2)$ is completely different from
the one for $p\ge... | 2211.15041v1 |
2023-03-10 | Dynamic Exchange Coupling between Magnets Mediated by Attenuating Elastic Waves | Coupling between spatially separated magnets can be mediated by excitations
such as photons and phonons, which can be characterized as coherent coupling
and dissipative coupling with real and imaginary coupling rate. We
theoretically predict the existence of dynamic exchange coupling in a closed
magneto-elastic system ... | 2303.05778v1 |
2023-03-20 | Meter-scale strong coupling between magnons and photons | We experimentally realize a meter-scale strong coupling effect between
magnons and photons at room temperature, with a coherent coupling of 20 m and a
dissipative coupling of 7.6 m. To this end, we integrate a saturable gain into
a microwave cavity and then couple this active cavity to a magnon mode via a
long coaxial ... | 2303.10925v3 |
2023-03-22 | Synchronization of Four Non-identical Local Coupled Phase Oscillators in A Ring: Analytic Determination of The Critical Coupling and Phase Differences | We investigate a system of four nearest neighbour bidirectional coupled phase
oscillators of dissimilar initial frequencies in a ring at the changeover into
a synchronizing state. There are twenty four permutations upon assigning the
initial frequencies to the oscillators. The local interaction between the
adjacent cou... | 2303.12591v1 |
2023-03-31 | Self-consistent description of relaxation processes in systems with ultra- and deep-strong coupling | An ultra-strong coupling regime takes place in a compound system when a
coupling strength between the subsystems exceeds one tenth of the system
eigenfrequency. It transforms into a deep-strong coupling regime when the
coupling strength exceeds the system eigenfrequency. In these regimes, there
are difficulties with de... | 2303.18159v1 |
2023-04-24 | Birth and death of entanglement between two accelerating Unruh-DeWitt detectors coupled with a scalar field | We consider two accelerating Unruh-DeWitt detectors coupled linearly or
quadratically with a scalar field. We show that entanglement can be created by
acceleration, and is divergent only when the two detectors coincide. For linear
coupling, entanglment decreases monotonically with the increase of
acceleration. For quad... | 2304.12126v1 |
2023-05-11 | Photo-induced Non-collinear Interlayer RKKY Coupling in Bulk Rashba Semiconductors | The interplay between light-matter, spin-orbit, and magnetic interactions
allows the investigation of light-induced magnetic phenomena that is otherwise
absent without irradiation. We present our analysis of light-driving effects on
the interlayer exchange coupling mediated by a bulk Rashba semiconductor in a
magnetic ... | 2305.06861v1 |
2023-05-27 | Hopf bifurcation and periodic solutions in a coupled Brusselator model of chemical reactions | In this paper, we consider a coupled Brusselator model of chemical reactions,
for which no symmetry for the coupling matrices is assumed. We show that the
model can undergoes a Hopf bifurcation, and consequently periodic solutions can
arise when the dispersal rates are large. Moreover, the effect of the coupling
matric... | 2305.17363v1 |
2023-06-27 | Electro-momentum coupling tailored in piezoelectric metamaterials with resonant shunts | Local microstructural heterogeneities of elastic metamaterials give rise to
non-local macroscopic cross-coupling between stress-strain and
momentum-velocity, known as Willis coupling. Recent advances have revealed that
symmetry breaking in piezoelectric metamaterials introduces an additional
macroscopic cross-coupling ... | 2306.15608v1 |
2023-06-29 | Global synchronization analysis of non-diffusively coupled networks through Contraction Theory | Synchronization of coupled dynamical systems is a widespread phenomenon in
both biological and engineered networks, and understanding this behavior is
crucial for controlling such systems. Considerable research has been dedicated
to identifying the conditions that promote synchronization in diffusively
coupled systems,... | 2307.00030v1 |
2023-07-09 | Multi-spin probes for thermometry in the strong-coupling regime | We study the sensitivity of thermometric probes that are composed of $N$
spins coupled to a sample prepared at temperature $T$. Our analysis extends
beyond the weak-coupling limit into the strong sample-probe coupling regime. In
particular, sample-induced interactions between each of the spins are generated
via strong ... | 2307.04232v2 |
2023-07-11 | Inflationary magnetogenesis with a self-consistent coupling function | In this paper, we discuss the inflationary magnetogenesis scenario, in which
the coupling function is introduced to break the conformal invariance of
electromagnetic action. Unlike in conventional models, we deduce the Maxwell's
equations under the perturbed FRW metric. We found that, the self-consistency
of the action... | 2307.04987v1 |
2023-09-27 | Multiband strong-coupling superconductors with spontaneously broken time-reversal symmetry | We study superconducting three-band systems within strong-coupling Eliashberg
theory. In particular, we search for phase-frustrated superconducting systems
with spontaneous time-reversal symmetry breaking (TRSB) states. The emergence
of TRSB states in multiband systems has so far been studied using microscopic
weak-cou... | 2309.15894v2 |
2023-09-29 | Constructing Maximal Germ Couplings of Brownian Motions with Drift | Consider all the possible ways of coupling together two Brownian motions with
the same starting position but with different drifts onto the same probability
space. It is known that there exist couplings which make these processes agree
for some random, positive, maximal initial length of time. Presently, we
provide an ... | 2309.16922v1 |
2023-10-04 | Coupling strength induced BCS-BEC crossover on phase boundary of pion superfluid | Coupling strength effect on the quark matter with finite isospin chemical
potential is studied in a Pauli-Villars regularized NJL model. A BCS-BEC
crossover occurs along the phase boundary of pion superfluid phase transition,
as increasing coupling strength $G$. For strong coupling cases, the critical
isospin chemical ... | 2310.02685v1 |
2023-10-08 | Vortex Lattice Formation in Spin-Orbit-Coupled Spin-2 Bose-Einstein Condensate Under Rotation | We investigate the vortex lattice configuration in a rotating spin
orbit-coupled spin-2 Bose-Einstein condensate confined in a
quasi-two-dimensional harmonic trap. By considering the interplay between
rotation frequency, spin-orbit couplings, and inter atomic interactions, we
explore a variety of vortex lattice structu... | 2310.05160v1 |
2023-10-18 | Higgs-Induced Screening Mechanisms in Scalar-Tensor Theories | We consider the theory of a light conformally coupled scalar field, i.e., one
that is coupled directly to the Ricci scalar of the gravitational sector. This
theory can be written equivalently as one of a light scalar that is coupled to
the Standard Model of particle physics with a particular combination of
Higgs-portal... | 2310.12071v1 |
2023-12-16 | Coupled deformed microdisk cavities featuring non-Hermitian properties | Coupled cavities are of interest as they expose qualitatively new effects,
such as non-Hermitian properties, that are beyond the possibilitie of
individual cavities. Here, we investigate the coupling between two dielectric
two-dimensional microdisk cavities and compare circular vs. deformed
(lima\c{c}on) resonator shap... | 2312.10522v1 |
2023-12-04 | Optimal coupling functions for fast and global synchronization of weakly coupled limit-cycle oscillators | We propose a method for optimizing mutual coupling functions to achieve fast
and global synchronization between a pair of weakly coupled limit-cycle
oscillators. Our method is based on phase reduction that provides a concise
low-dimensional representation of the synchronization dynamics of mutually
coupled oscillators,... | 2401.05354v1 |
2024-03-01 | Coupled cluster theory for nonadiabatic dynamics: nuclear gradients and nonadiabatic couplings in similarity constrained coupled cluster theory | Coupled cluster theory is one of the most accurate electronic structure
methods for predicting ground and excited state chemistry. However, the
presence of numerical artifacts at electronic degeneracies, such as complex
energies, has made it difficult to apply it in nonadiabatic dynamics
simulations. While it has alrea... | 2403.01007v2 |
2024-04-01 | Four-Derivative Yang-Mills Couplings in Heterotic Theory through T-Duality | This study delves into the dimensional reduction of the classical effective
action of heterotic string theory on a circle, along with its T-duality
symmetry, with the aim of identifying the bosonic couplings. To achieve this,
we propose a truncation scheme for the generalized Buscher rules and the
reduced action, speci... | 2404.00957v1 |
2024-04-01 | Upper bound for the quantum coupling between free electrons and photons | The quantum interaction between free electrons and photons is fundamental to
free-electron based light sources and free-electron quantum optics
applications. A large coupling between free electrons and photons is generally
desired. In this manuscript, I study the upper bound for the quantum coupling
between free electr... | 2404.01221v1 |
2017-12-19 | Asymptotic Coupling and Its Applications in Information Theory | A coupling of two distributions $P_{X}$ and $P_{Y}$ is a joint distribution
$P_{XY}$ with marginal distributions equal to $P_{X}$ and $P_{Y}$. Given
marginals $P_{X}$ and $P_{Y}$ and a real-valued function $f$ of the joint
distribution $P_{XY}$, what is its minimum over all couplings $P_{XY}$ of
$P_{X}$ and $P_{Y}$? We... | 1712.06804v3 |
2002-11-21 | Strong coupling constant to four loops in the analytic approach to QCD | The QCD analytic running coupling alpha_{an} which has no nonphysical
singularities for all Q^2>0 is considered for the initial perturbation theory
approximations up to four loop order. The finiteness of the analytic coupling
at zero is shown to be a consequence of the asymptotic freedom property of the
initial theory.... | 0211339v1 |
2002-12-20 | Quantum Information Processing by NMR using strongly coupled spins | The enormous theoretical potential of Quantum Information Processing (QIP) is
driving the pursuit for its practical realization by various physical
techniques. Currently Nuclear Magnetic Resonance (NMR) has been the forerunner
by demonstrating a majority of quantum algorithms. In NMR, spin systems
consisting of coupled... | 0212123v2 |
2007-12-18 | Threshold and Flavour Effects in the Renormalization Group Equations of the MSSM I: Dimensionless Couplings | In a theory with broken supersymmetry, gaugino couplings renormalize
differently from gauge couplings, as do higgsino couplings from Higgs boson
couplings. As a result, we expect the gauge (Higgs boson) couplings and the
corresponding gaugino (higgsino) couplings to evolve to different values under
renormalization grou... | 0712.2858v2 |
2009-10-12 | Effects on the two-point correlation function from the coupling of quintessence to dark matter | We investigate the effects of the nonminimal coupling between the scalar
field dark energy (quintessence) and the dark matter on the two- point
correlation function. It is well known that this coupling shifts the turnover
scale as well as suppresses the amplitude of the matter power spectrum.
However, these effects are... | 0910.2175v2 |
2010-08-11 | Interacting fermions on the honeycomb bilayer: from weak to strong coupling | Many-body instabilities of the half-filled honeycomb bilayer are studied
using weak coupling renormalization group as well as strong coupling expansion.
For spinless fermions and assuming parabolic degeneracy, there are
4-independent four-fermion contact couplings. While the dominant instability
depends on the microsco... | 1008.1901v1 |
2011-05-24 | Chaotic inflation in modified gravitational theories | We study chaotic inflation in the context of modified gravitational theories.
Our analysis covers models based on (i) a field coupling $\omega(\phi)$ with
the kinetic energy $X$ and a nonmimimal coupling $\zeta \phi^{2} R/2$ with a
Ricci scalar $R$, (ii) Brans-Dicke (BD) theories, (iii) Gauss-Bonnet (GB)
gravity, and (... | 1105.4685v1 |
2013-07-26 | A comparison of structure formation in minimally and non-minimally coupled quintessence models | We study structure formation in non-minimally coupled dark energy models,
where there is a coupling in the Lagrangian between a quintessence scalar field
and gravity via the Ricci scalar. We consider models with a range of different
non-minimal coupling strengths and compare these to minimally coupled
quintessence mode... | 1307.7026v2 |
2013-10-21 | Towards a Mechanism of Rattler Coupling in the β-Pyrochlores AOs2O6 (A = K, Rb, Cs) | We have applied ab initio molecular dynamics (MD) simulations to study
metal-metal coupling on the alkali-metal sublattice in the {\beta}-pyrochlore
osmates, AOs2O6 (A = K, Rb, Cs) at 300 K. We find that the alkali-metal atoms
(rattlers) couple to each other more strongly than they couple to the cage
atoms, and that, a... | 1310.5416v2 |
2014-04-23 | Renormalizability of the Dirac Equation in Torsion-Gravity with Non-Minimal Coupling | We will consider the torsional completion of gravity for a background filled
with Dirac matter fields, studying what happens when fermionic non-minimal
coupling is taken into account: we will show that, although non-minimal
couplings are usually disregarded because of their ill-defined behaviour in
ultraviolet regimes,... | 1404.5784v4 |
2014-08-07 | On couplings to matter in massive (bi-)gravity | We investigate the coupling to matter in ghost-free massive (bi-)gravity.
When species in the matter sector couple covariantly to only one metric, we
show that at one--loop these couplings do not spoil the special structure of
the graviton potential. When the same species couples directly to both metrics
we show that a... | 1408.1678v3 |
2014-12-08 | Rigidity for Markovian Maximal Couplings of Elliptic Diffusions | Maximal couplings are (probabilistic) couplings of Markov processes such that
the tail probabilities of the coupling time attain the total variation lower
bound (Aldous bound) uniformly for all time. Markovian (or immersion) couplings
are couplings defined by strategies where neither process is allowed to look
into the... | 1412.2647v2 |
2017-08-09 | Two-way coupling of magnetohydrodynamic simulations with embedded particle-in-cell simulations | We describe a method for coupling an embedded domain in a magnetohydrodynamic
(MHD) simulation with a particle-in-cell (PIC) method. In this two-way coupling
we follow the work of Daldorff et al. in which the PIC domain receives its
initial and boundary conditions from MHD variables (MHD to PIC coupling) while
the MHD ... | 1708.02877v1 |
2018-04-04 | Use of the geometric mean as a statistic for the scale of the coupled Gaussian distributions | The geometric mean is shown to be an appropriate statistic for the scale of a
heavy-tailed coupled Gaussian distribution or equivalently the Student's t
distribution. The coupled Gaussian is a member of a family of distributions
parameterized by the nonlinear statistical coupling which is the reciprocal of
the degree o... | 1804.03989v2 |
2019-04-01 | Spin-charge coupled transport in van der Waals systems with random tunneling | We study the electron and spin transport in a van der Waals system formed by
one layer with strong spin-orbit coupling and a second layer without spin-orbit
coupling, in the regime when the interlayer tunneling is random. We find that
in the layer without intrinsic spin-orbit coupling spin-charge coupled
transport can ... | 1904.01015v1 |
2019-03-27 | A coupled finite-volume solver for numerical simulation of electrically-driven flows | The accuracy and stability of implicit CFD codes are frequently impaired by
the decoupling between variables, which can ultimately lead to numerical
divergence. Coupled solvers, which solve all the governing equations
simultaneously, have the potential to fix this problem. In this work, we report
the implementation of ... | 1904.02138v2 |
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