publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2022-04-08 | A no-go theorem for scalar fields with couplings from Ginzburg-Landau models | Recently Hod proved a no-go theorem that static scalar fields cannot form
spherically symmetric boson stars in the asymptotically flat background. On the
other side, scalar fields can be coupled to the gradient according to
next-to-leading order Ginzburg-Landau models. In the present work, we extend
Hod's discussions b... | 2204.03833v1 |
2022-04-14 | A note on the effects of magnetic field on holographic fermions with dipole-like coupling | In this note, we study the effects of non-zero magnetic field on the fermion
spectral function coupled with a non-minimal coupling in the background of a
dyonic $AdS_4$ black hole. The system can be reduced to a non magnetic one with
the momentum being quantized into Landau levels $n$. By tuning the coupling
parameter,... | 2204.06756v1 |
2022-06-10 | Quantum heat engine based on a spin-orbit and Zeeman-coupled Bose-Einstein condensate | We explore the potential of a spin-orbit coupled Bose-Einstein condensate for
thermodynamic cycles. For this purpose we propose a quantum heat engine based
on a condensate with spin-orbit and Zeeman coupling as a working medium. The
cooling and heating are simulated by contacts of the condensate with an
external magnet... | 2206.05041v1 |
2022-08-12 | Internal energy exchanges and chaotic dynamics in an intrinsically coupled system | Intrinsically coupled nonlinear systems present different oscillating
components that exchange energy among themselves. A paradigmatic example is the
spring pendulum, which displays spring, pendulum, and coupled oscillations. We
analyze the energy exchanges among the oscillations, and obtain that it is
enhanced for cha... | 2208.06390v1 |
2022-08-26 | Schwinger-Dyson equations and mass generation for an axion theory with a PT symmetric Yukawa fermion interaction | A nonperturbative Schwinger-Dyson analysis of mass generation is presented
for a non-Hermitian PT-symmetric field theory in four dimensions of an axion
coupled to a Dirac fermion.The model is motivated by phenomenological
considerations.The axion has a quartic self-coupling $\lambda$ and a Yukawa
coupling $g$ to the fe... | 2208.12436v1 |
2022-09-08 | Temporal coupled-mode theory for thermal emission from multiple arbitrarily coupled resonators | Controlling the spectral response of thermal emitters has become increasingly
important for a range of energy and sensing applications. Conventional
approaches to achieving arbitrary spectrum selectivity in photonic systems have
entailed combining multiple resonantly emissive elements together to achieve a
range of spe... | 2209.03951v1 |
2022-09-14 | Nonlocal Superposed Solutions II: Coupled Nonlinear Equations | We obtain novel periodic as well as hyperbolic solutions of an
Ablowitz-Musslimani variant of the coupled nonlocal, nonlinear Schr\"odinger
equation (NLS) as well as a coupled nonlocal modified Korteweg-de Vries (mKdV)
equation which can be re-expressed as a linear superposition of the sum or the
difference of two hype... | 2209.06976v1 |
2022-10-18 | Two-dimensional hydrodynamic simulation for synchronization in coupled density oscillators | A density oscillator is a fluid system in which oscillatory flow occurs
between different density fluids through the pore connecting them. We
investigate the synchronization in coupled density oscillators using
two-dimensional hydrodynamic simulation and analyze the stability of the
synchronous state based on the phase... | 2210.09762v2 |
2022-11-20 | Soliton dynamics to the coupled Higgs equation and its multi-component generalization | In this paper, we study the coupled Higgs equation and its multi-component
generalization based on the Hirota's direct method. One and two-soliton
solutions of the coupled Higgs equation are derived by the perturbation
approach. We express the N-soliton solutions in the form of Pfaffians and
demonstrate that the N-comp... | 2211.10860v1 |
2023-01-10 | Next nearest neighbour coupling with spinor polariton condensates | We report on experimental observation of next-nearest-neighbour coupling
between ballistically expanding spinor exciton-polariton condensates in a
planar semiconductor microcavity. All-optical control over the coupling
strength between neighbouring condensates is demonstrated through
distance-periodic pseudospin screen... | 2301.04210v1 |
2023-01-30 | Perturbative Quantum Gravity Induced Scalar Coupling to Electromagnetism | Physicists working on atom interferometers are interested in scalar couplings
to electromagnetism of dimensions 5 and 6 which might be induced by quantum
gravity. There is a widespread belief that such couplings can only be induced
by conjectured non-perturbative effects, resulting in unknown coupling
strengths. In thi... | 2301.12611v2 |
2023-04-12 | Long-range coupling between superconducting dots induced by periodic driving | We consider a Josephson bijunction consisting of three superconducting
reservoirs connected through two quantum dots. In equilibrium, the interdot
coupling is sizable only for distances smaller than the superconducting
coherence length. Application of commensurate dc voltages results in a
time-periodic Hamiltonian and ... | 2304.05987v1 |
2023-04-18 | Spin-Gravity Coupling in a Rotating Universe | The coupling of intrinsic spin with the nonlinear gravitomagnetic fields of
Goedel-type spacetimes is studied. We work with Goedel-type universes in order
to show that the main features of spin-gravity coupling are independent of
causality problems of the Goedel universe. The connection between the
spin-gravitomagnetic... | 2304.08835v2 |
2023-04-18 | Nonexistence of Solutions to the Coupled Generalized Jang Equation/Zero Divergence System | In [5], Bray and Khuri proposed coupling the generalized Jang equation to
several different auxiliary equations. The solutions to these coupled systems
would then imply the Penrose inequality. One of these involves coupling the
generalized Jang equation to $\overline{div}(\phi q)=0$, as this would
guarantee the non-neg... | 2304.09332v1 |
2023-05-12 | Coupled-cluster theory for strong entanglement in nuclei | Atomic nuclei can exhibit shape coexistence and multi-reference physics that
enters in their ground states, and to accurately capture the ensuing
correlations and entanglement is challenging. We address this problem by
applying single-reference coupled-cluster theory based on spherical and
deformed reference states and... | 2305.07577v1 |
2023-08-02 | Influence of band occupation on electron-phonon coupling in gold | Electron-phonon coupling is a fundamental process that governs the energy
relaxation dynamics of solids excited by ultrafast laser pulses. It has been
found to strongly depend on electron temperature as well as on nonequilibrium
effects. Recently, the effect of occupational nonequilibrium in noble metals,
which outlast... | 2308.01067v1 |
2023-08-07 | Parametric excitations of coupled nanomagnets | We demonstrate that parametrically excited eigenmodes in nearby nanomagnets
can be coupled to each other. Both positive (in-phase) and negative
(anti-phase) couplings can be realized by a combination of appropriately chosen
geometry and excitation field frequency. The oscillations are sufficiently
stable against therma... | 2308.03327v1 |
2023-08-10 | A Generalized Primal-Dual Correction Method for Saddle-Point Problems with the Nonlinear Coupling Operator | Recently, the generalized primal-dual (GPD) method was developed for
saddle-point problems (SPPs) with a linear coupling operator. However, the
coupling operator in many engineering applications is nonlinear. In this
letter, we propose a generalized primal-dual correction method (GPD-CM) to
handle SPPs with a nonlinear... | 2308.05388v1 |
2023-08-17 | Null controllability of two kinds of coupled parabolic systems with switching control | The focus of this paper is on the null controllability of two kinds of
coupled systems including both degenerate and non-degenerate equations with
switching control. We first establish the observability inequality for
measurable subsets in time for such coupled system, and then by the HUM method
to obtain the null cont... | 2308.08752v1 |
2023-09-27 | Reconciling quantum and classical spectral theories of ultrastrong coupling: Role of cavity bath coupling and gauge corrections | Focusing on the widely adopted Hopfield model with cavity dissipation, we
show how the linear spectrum of an ultrastrongly coupled cavity and a dipole
can be described either classically or quantum mechanically, but only when the
quantum model includes (i) corrections to maintain gauge invariance, and (ii) a
specific t... | 2309.15788v2 |
2023-10-11 | The Effect of Intra- and Inter-ring Couplings in Leaky Integrate-and-Fire Multiplex Networks | We study the dynamics of identical Leaky Integrate-and-Fire (LIF) neurons on
a multiplex composed of two ring networks with symmetric nonlocal coupling
within each ring and one-to-one connections between rings. We investigate the
impact of different intra-ring coupling strengths in the two rings for
attractive and repu... | 2310.07549v2 |
2023-11-10 | One-loop RG Flow for Adjoint Multiscalar Gauge Theory | We study the one-loop renormalisation of 4d SU(N) Yang-Mills theory with $M$
adjoint representation scalar multiplets. We calculate the coupled one-loop
renormalization group flows for this theory by developing an algebraic
description, which we find to be characterised by a non-associative algebra of
marginal coupling... | 2311.05993v1 |
2023-12-30 | Dynamics of oscillator populations with disorder in the coupling phase shifts | We study populations of oscillators, all-to-all coupled by means of quenched
disordered phase shifts. While there is no traditional synchronization
transition with a nonvanishing Kuramoto order parameter, the system
demonstrates a specific order as the coupling strength increases. This order is
characterized by partial... | 2401.00281v1 |
2024-01-22 | Weak and Strong Coupling Polarons in Binary Bose-Einstein Condensates | The Bose polaron is a quasiparticle that arises from the interaction between
impurities and Bogoliubov excitation in Bose-Einstein condensates, analogous to
the polaron formed by electrons and phonons in solid-state physics. In this
paper, we investigate the effect of phase separation on weakly coupled and
strongly cou... | 2401.11808v1 |
2024-03-19 | Renormalization of networks with weak geometric coupling | The Renormalization Group is crucial for understanding systems across scales,
including complex networks. Renormalizing networks via network geometry, a
framework in which their topology is based on the location of nodes in a hidden
metric space, is one of the foundational approaches. However, the current
methods assum... | 2403.12663v1 |
2024-03-22 | Stability of abstract coupled systems | We study stability of abstract differential equations coupled by means of a
general algebraic condition. Our approach is based on techniques from operator
theory and systems theory, and it allows us to study coupled systems by
exploiting properties of the components, which are typically much simpler to
analyse. As our ... | 2403.15253v1 |
1999-03-30 | Gapless Singlet modes in the Kagome strips: A study through DMRG and strong coupling analysis | Recently Azaria et al have studied strips of the Kagome-lattice in the
weak-coupling limit, where they consist of two spin-half chains on the outside
weakly coupled to an array of half-integer spins in the middle. Using a number
of mappings they have arrived at the interesting result that in this system all
spin excita... | 9903434v1 |
2006-08-08 | Renormalization group study of the Kondo problem at a junction of several Luttinger wires | We study a system consisting of a junction of N quantum wires, where the
junction is characterized by a scalar S-matrix, and an impurity spin is coupled
to the electrons close to the junction. The wires are modeled as weakly
interacting Tomonaga-Luttinger liquids. We derive the renormalization group
equations for the K... | 0608187v1 |
2003-08-11 | Understanding the Strong Coupling Limit of the ${\cal N}=4$ Supersymmetric Yang-Mills at Finite Temperature | Recently, a number of intriguing results have been obtained for strongly
coupled ${\cal N}=4$ Supersymmetric Yang-Mills theory in vacuum and matter,
using the AdS/CFT correspondence. In this work, we provide a physical picture
supporting and explaining most of these results within the gauge theory. The
modified Coulomb... | 0308073v2 |
2006-07-28 | Photon and dilepton production in supersymmetric Yang-Mills plasma | By weakly gauging one of the U(1) subgroups of the R-symmetry group, N=4
super-Yang-Mills theory can be coupled to electromagnetism, thus allowing a
computation of photon production and related phenomena in a QCD-like
non-Abelian plasma at both weak and strong coupling. We compute photon and
dilepton emission rates fro... | 0607237v2 |
2000-08-15 | CCT, a Code to Automate the Design of Coupled Cavities | The CCT (Coupled Cavity Tuning) code automates the RF calculations and sizing
of RF cavities for the CCL (Coupled Cavity Linac) structures of APT. It is
planned to extend the code to the CCDTL (Coupled Cavity Drift Tube Linac). The
CCT code controls the CCLFISH code, a member of the Poisson Superfish series of
codes [1... | 0008073v1 |
2003-07-30 | Theory of output coupling for trapped fermionic atoms | We develop a dynamic theory of output coupling, for fermionic atoms initially
confined in a magnetic trap. We consider an exactly soluble one-dimensional
model, with a spatially localized delta-type coupling between the atoms in the
trap and a continuum of free-particle external modes. Two important special
cases are c... | 0307230v2 |
2007-09-21 | Weak and strong coupling limits of the two-dimensional Fröhlich polaron with spin-orbit Rashba interaction | The continuous progress in fabricating low-dimensional systems with large
spin-orbit couplings has reached a point in which nowadays materials may
display spin-orbit splitting energies ranging from a few to hundreds of meV.
This situation calls for a better understanding of the interplay between the
spin-orbit coupling... | 0709.3429v2 |
2008-01-25 | Magnetic order in coupled spin-half and spin-one Heisenberg chains in anisotropic triangular-lattice geometry | We study spin-half and spin-one Heisenberg models in the limit where one
dimensional (1-D) linear chains, with exchange constant J1, are weakly coupled
in an anisotropic triangular lattice geometry. Results are obtained by means of
linked-cluster series expansions at zero temperature around different
magnetically order... | 0801.3855v1 |
2008-03-07 | On the running of the bare coupling in SU(N) lattice gauge theories | Interpreting the way that the SU(3) bare lattice coupling runs with the
lattice spacing is complicated by the fact that there is a smooth cross-over
region in which the strong coupling expansion transforms into a weak-coupling
one. For N > 4, however, there is a first order bulk transition that cleanly
separates the st... | 0803.1092v1 |
2008-03-13 | Late universe dynamics with scale-independent linear couplings in the dark sector | We explore the dynamics of cosmological models with two coupled dark
components with energy densities $\rho_A$ and $\rho_B$. We assume that the
coupling is of the form $Q=Hq(\rho_A,\rho_B)$, so that the dynamics of the two
components turns out to be scale independent, i.e. does not depend explicitly
on the Hubble scala... | 0803.1976v2 |
2008-09-15 | Interlayer coupling in EuS/SrS, EuS/PbSe and EuS/PbTe magnetic semiconductor superlatices | Neutron reflectivity studies of EuS/SrS, EuS/PbSe, and EuS/PbTe
all-semiconductor superlattices were carried out in search for exchange
interlayer coupling. A relatively weak antiferromagnetic coupling was found in
EuS/SrS and in EuS/PbSe systems but no interlayer coupling was detected in
EuS/PbTe superlattices. In EuS... | 0809.2529v1 |
2010-06-14 | Scaling and synchronization in a ring of diffusively coupled nonlinear oscillators | Chaos synchronization in a ring of diffusively coupled nonlinear oscillators
driven by an external identical oscillator is studied. Based on numerical
simulations we show that by introducing additional couplings at $(mN_c+1)$-th
oscillators in the ring, where $m$ is an integer and $N_c$ is the maximum
number of synchro... | 1006.2621v1 |
2011-03-17 | A spin-orbit coupled Bose-Einstein condensate | Spin-orbit (SO) coupling -- the interaction between a quantum particle's spin
and its momentum -- is ubiquitous in nature, from atoms to solids. In condensed
matter systems, SO coupling is crucial for the spin-Hall effect and topological
insulators, which are of extensive interest; it contributes to the electronic
prop... | 1103.3522v1 |
2011-04-04 | Near concavity of the growth rate for coupled LDPC chains | Convolutional Low-Density-Parity-Check (LDPC) ensembles have excellent
performance. Their iterative threshold increases with their average degree, or
with the size of the coupling window in randomized constructions. In the later
case, as the window size grows, the Belief Propagation (BP) threshold attains
the maximum-a... | 1104.0599v1 |
2012-02-08 | Transport through side-coupled double quantum dots: from weak to strong interdot coupling | We report low-temperature transport measurements through a double quantum dot
device in a configuration where one of the quantum dots is coupled directly to
the source and drain electrodes, and a second (side-coupled) quantum dot
interacts electrostatically and via tunneling to the first one. As the interdot
coupling i... | 1202.1580v1 |
2012-06-15 | Coupled motion of asymmetrical tilt grain boundaries: molecular dynamics and phase field crystal simulations | Previous simulation and experimental studies have shown that some grain
boundaries (GBs) can couple to applied shear stresses and be moved by them,
producing shear deformation of the lattice traversed by their motion. While
this coupling effect has been well confirmed for symmetrical tilt GBs, little
is known about the... | 1206.3549v1 |
2012-07-20 | Transition to complete synchronization and global intermittent synchronization in an array of time-delay systems | We report the nature of transitions from nonsynchronous to complete
synchronization (CS) state in arrays of time-delay systems, where the systems
are coupled with instantaneous diffusive coupling. We demonstrate that the
transition to CS occurs distinctly for different coupling configurations. In
particular, for unidir... | 1207.4888v1 |
2013-01-22 | Validity of single-channel model for a spin-orbit coupled atomic Fermi gas near Feshbach resonances | We theoretically investigate a Rashba spin-orbit coupled Fermi gas near
Feshbach resonances, by using mean-field theory and a two-channel model that
takes into account explicitly Feshbach molecules in the close channel. In the
absence of spin-orbit coupling, when the channel coupling $g$ between the
closed and open cha... | 1301.5071v1 |
2014-11-27 | Cosmological Tests of Coupled Galileons | We investigate the cosmological properties of Galileon models with positive
kinetic terms. We include both conformal and disformal couplings to matter and
focus on constraints on the theory that arise because of these couplings. The
disformal coupling to baryonic matter is extremely constrained by astrophysical
and par... | 1411.7621v1 |
2014-12-02 | The $SU(\infty)$ twisted gradient flow running coupling | We measure the running of the $SU(\infty)$ 't Hooft coupling by performing a
step scaling analysis of the Twisted Eguchi-Kawai (TEK) model, the SU($N$)
gauge theory on a single site lattice with twisted boundary conditions. The
computation relies on the conjecture that finite volume effects for SU(N) gauge
theories def... | 1412.0941v1 |
2015-03-31 | Probing Higgs couplings at LHC and beyond | The study of the Higgs couplings following its discovery is the priority of
future LHC runs. A hint of anomalous nature will be exhibited via its coupling
to the Standard Model(SM) particles and open up new domain of phenomenological
study of physics beyond the Standard Model. The enhanced statistics from next
LHC runs... | 1503.08924v1 |
2015-04-13 | Quantum theory of light emission from quantum dots coupled to structured photonic reservoirs and acoustic phonons | Electron-phonon coupling in semiconductor quantum dots plays a significant
role in determining the optical properties of excited excitons, especially the
spectral nature of emitted photons. This paper presents a comprehensive theory
and analysis of emission spectra from artificial atoms or quantum dots coupled
to struc... | 1504.03356v1 |
2015-06-15 | Coupled intertwiner dynamics: A toy model for coupling matter to spin foam models | The universal coupling of matter and gravity is one of the most important
features of general relativity. In quantum gravity, in particular spin foams,
matter couplings have been defined in the past, yet the mutual dynamics, in
particular if matter and gravity are strongly coupled, are hardly explored,
which is related... | 1506.04749v3 |
2015-10-30 | Polarization of the top quark as a probe of its chromomagnetic and chromoelectric couplings in single-top production at the Large Hadron Collider | We study the sensitivity of the Large Hadron Collider (LHC) to top quark
chromomagnetic (CMDM) and chromoelectric (CEDM) dipole moments and $Wtb$
effective couplings in single-top production in association with a $W^-$ boson,
followed by semileptonic decay of the top. We calculate the top polarization
and the effects o... | 1510.08959v1 |
2016-07-04 | Implications of Coupling in Quantum Thermodynamic Machines | We study coupled quantum systems as the working media of thermodynamic
machines. Under a suitable phase-space transformation, the coupled systems can
be expressed as a composition of independent subsystems. We find that for the
coupled systems, the figures of merit, that is the efficiency for engine and
the coefficient... | 1607.00994v3 |
2016-07-07 | Testing the running coupling $k_{T}$-factorization formula for the inclusive gluon production | The inclusive gluon production at midrapidities is described in the Color
Glass Condensate formalism using the $k_T$ - factorization formula, which was
derived at fixed coupling constant considering the scattering of a dilute
system of partons with a dense one. Recent analysis demonstrated that this
approach provides a... | 1607.02082v1 |
2018-11-28 | Signature of the transition to a bound state in thermoelectric quantum transport | We study a quantum dot coupled to two semiconducting reservoirs, when the dot
level and the electrochemical potential are both close to a band edge in the
reservoirs. This is modelled with an exactly solvable Hamiltonian without
interactions (the Fano-Anderson model). The model is known to show an abrupt
transition as ... | 1811.11550v4 |
2012-01-24 | New insights on the matter-gravity coupling paradigm | The coupling between matter and gravity in General Relativity is given by a
proportionality relation between the stress tensor and the geometry. This is an
oriented assumption driven by the fact that both the stress tensor and the
Einstein tensor are divergenceless. However, General Relativity is in essence a
nonlinear... | 1201.4989v3 |
2016-08-23 | Coupling ideality of integrated planar high-Q microresonators | Chipscale microresonators with integrated planar optical waveguides are
useful building blocks for linear, nonlinear and quantum optical devices. Loss
reduction through improving fabrication processes has resulted in several
integrated micro resonator platforms attaining quality (Q) factors of several
millions. However... | 1608.06607v1 |
2017-06-25 | Understanding the different exciton-plasmon coupling regimes in two-dimensional semiconductors coupled with plasmonic lattices: a combined experimental and unified equations of motion approach | We study exciton-plasmon coupling in two-dimensional semiconductors coupled
with Ag plasmonic lattices via angle-resolved reflectance spectroscopy and by
solving the equations of motion (EOMs) in a coupled oscillator model accounting
for all the resonances of the system. Five resonances are considered in the EOM
model:... | 1706.08024v1 |
2017-05-04 | Relativistic quantum dynamics of scalar bosons under a full vector Coulomb interaction | The relativistic quantum dynamics of scalar bosons in the background of a
full vector coupling (minimal plus nonminimal vector couplings) is explored in
the context of the Duffin-Kemmer-Petiau formalism. The Coulomb phase shift is
determined for a general mixing of couplings and it is shown that the space
component of ... | 1705.01810v1 |
2018-06-20 | Universal method for realization of strong light-matter coupling in hierarchical microcavity-plasmon-exciton systems | Polaritons are compositional light-matter quasiparticles that arise as a
result of strong coupling between a vacuum field of a resonant optical cavity
and electronic excitations in quantum emitters. Reaching such a regime is often
hard, as it requires materials possessing high oscillator strengths to interact
with the ... | 1806.07784v1 |
2019-03-05 | Strong Vibrational Coupling in Room Temperature Plasmonic Resonators | Strong vibrational coupling has been realized in a variety of mechanical
systems from cavity optomechanics to electromechanics.$^{1, 2, 3, 4, 5}$ It is
an essential requirement for enabling quantum control over the vibrational
states.$^{6, 7, 8, 9, 10, 11}$ The majority of the mechanical systems that have
been studied ... | 1903.01670v1 |
2019-03-15 | Simulating Anisotropic quantum Rabi model via frequency modulation | Anisotropic quantum Rabi model is a generalization of quantum Rabi model,
which allows its rotating and counter-rotating terms to have two different
coupling constants. It provides us with a fundamental model to understand
various physical features concerning quantum optics, solid-state physics, and
mesoscopic physics.... | 1903.06347v1 |
2019-04-24 | Manipulating Coherent Light Matter Interaction: Continuous Transition between Strong Coupling and Weak Coupling in MoS2 Monolayer Coupled with Plasmonic Nanocavities | Strong interactions between surface plasmons in ultra-compact nanocavities
and excitons in two dimensional materials have attracted wide interests for its
prospective realization of polariton devices at room temperature. Here, we
propose a continuous transition from weak coupling to strong coupling between
excitons in ... | 1904.10591v3 |
2018-10-26 | Particle-number projected Bogoliubov coupled cluster theory. Application to the pairing Hamiltonian | While coupled cluster theory accurately models weakly correlated quantum
systems, it often fails in the presence of strong correlations where the
standard mean-field picture is qualitatively incorrect. In many cases, these
failures can be largely ameliorated by permitting the mean-field reference to
break physical symm... | 1810.11245v2 |
2018-10-31 | Stability of synchronous slowly oscillating periodic solutions for systems of delay differential equations with coupled nonlinearity | We study stability of so-called synchronous slowly oscillating periodic
solutions (SOPSs) for a system of identical delay differential equations (DDEs)
with linear decay and nonlinear delayed negative feedback that are coupled
through their nonlinear term. Under a row sum condition on the coupling matrix,
existence of ... | 1810.13398v3 |
2020-06-30 | Nonclassicality of open circuit QED systems in the deep-strong coupling regime | We investigate theoretically how the ground state of a qubit-resonator system
in the deep-strong coupling (DSC) regime is affected by the coupling to an
environment. We employ as a variational ansatz for the ground state of the
qubit-resonator-environment system a superposition of coherent states displaced
in qubit-sta... | 2006.16769v2 |
2015-07-30 | Polarization of top quark as a probe of its chromomagnetic and chromoelectric couplings in $tW$ production at the Large Hadron Collider | We study the sensitivity of the Large Hadron Collider (LHC) to top quark
chromomagnetic (CMDM) and chromoelectric (CEDM) dipole moments and $Wtb$
effective couplings in single-top production in association with a $W^-$ boson,
followed by semileptonic decay of the top. The $Wt$ single-top production mode
helps to isolat... | 1507.08385v2 |
2017-04-13 | The effect of noise fluctuation of a quantum tunneling device coupled to a substrate | The recent experiment of Stettenheim, et al. showed that, contrary to
conventional belief, the coupling of a quantum electronic device to its
substrate can have important effects on the noise power spectrum, since the
substrate functions as a mechanical oscillator. We carry out a theoretical
analysis of this coupling i... | 1704.04207v1 |
2018-01-20 | Generalized coupled mode formalism in reciprocal waveguides with gain/loss, anisotropy or bianisotropy | In anisotropic or bianisotropic waveguides, the standard coupled mode theory
fails due to the broken link between the forward and backward propagating
modes, which together form the dual mode sets that are crucial in constructing
couple mode equations. We generalize the coupled mode theory by treating the
forward and b... | 1801.06673v1 |
2019-06-28 | Non-derivative Axionic Couplings to Nucleons at large and small N | Among the possible CP-odd couplings of the axion to ordinary matter, the most
relevant ones for phenomenology are the Yukawa couplings to nucleons. We
analyze such non-derivative couplings within three different approaches:
standard effective field theory, the Skyrme model and holographic QCD. In all
the cases, the cou... | 1906.12132v3 |
2019-07-18 | Measurements of capacitive coupling within a quadruple quantum dot array | We present measurements of the capacitive coupling energy and the inter-dot
capacitances in a linear quadruple quantum dot array in undoped Si/SiGe. With
the device tuned to a regime of strong ($>$1 GHz) intra-double dot tunnel
coupling, as is typical for double dot qubits, we measure a capacitive coupling
energy of $2... | 1907.08216v1 |
2021-03-08 | Anisotropic magnon-magnon coupling in synthetic antiferromagnets | The magnon-magnon coupling in synthetic antiferromagnets advances it as
hybrid magnonic systems to explore the quantum information technologies. To
induce the magnon-magnon coupling, the parity symmetry between two
magnetization needs to be broken. Here we experimentally demonstrate a
convenient method to break the par... | 2103.04512v2 |
2021-09-19 | The Jet-Disk Coupling of Seyfert Galaxies from a Complete Hard X-ray Sample | We analyze the jet-disk coupling for different subsamples from a complete
hard X-ray Seyfert sample to study the coupling indices and their relation to
accretion rate. The results are: (1) the power-law coupling index ranges from
nearly unity (linear correlation) for radio-loud Seyferts to significantly less
than unity... | 2109.09102v1 |
2021-10-19 | An ultrastrongly coupled single THz meta-atom | Free-space coupling to strongly subwavelength individual optical elements is
a central theme in quantum optics, as it allows to control and manipulate the
properties of quantum systems. In this work, we show that by combining an
asymmetric immersion lens setup and complementary design of metasurfaces we are
able to per... | 2110.09776v1 |
2022-02-27 | Aging transition under discrete time-dependent coupling: Restoring rhythmicity from aging | We explore the aging transition in a network of globally coupled
Stuart-Landau oscillators under a discrete time-dependent coupling. In this
coupling, the connections among the oscillators are turned ON and OFF in a
systematic manner, having either a symmetric or an asymmetric time interval. We
discover that depending ... | 2202.13334v1 |
2022-03-28 | Optimal Coupling of Jumpy Brownian Motion on the Circle | Consider a Brownian motion on the circumference of the unit circle, which
jumps to the opposite point of the circumference at incident times of an
independent Poisson process of rate $\lambda$. We examine the problem of
coupling two copies of this `jumpy Brownian motion' started from different
locations, so as to optim... | 2203.14791v2 |
2022-08-27 | Optomechanical-interface-induced strong spin-magnon coupling | Strong long-distance spin-magnon coupling is essential for solid-state
quantum information processing and single qubit manipulation. Here, we propose
an approach to realize strong spin-magnon coupling in a hybrid optomechanical
cavity-spin-magnon system, where the optomechanical system, consisting of two
cavities coupl... | 2208.12988v3 |
2023-02-03 | Regularized coupling multiscale method for thermomechanical coupled problems | The coupling effects in multiphysics processes are often neglected in
designing multiscale methods. The coupling may be described by a non-positive
definite operator, which in turn brings significant challenges in multiscale
simulations. In the paper, we develop a regularized coupling multiscale method
based on the gen... | 2302.01674v2 |
2023-02-22 | Synchronization approach to achieving maximum power and thermal efficiency for weakly-coupled low-temperature-differential Stirling engines | Low-temperature-differential (LTD) Stirling engines are heat engines that can
operate autonomously with a slight temperature difference between
low-temperature heat reservoirs and are thus expected to contribute to a
sustainable society. A minimal dynamical-system model with only two variables
has been proposed to expl... | 2302.11308v4 |
2023-05-05 | Tilt-to-length coupling in LISA Pathfinder: analytical modelling | Tilt-to-length coupling was the limiting noise source in LISA Pathfinder
between 20 and 200 mHz before subtraction in post-processing. To prevent the
adding of sensing noise to the data by the subtraction process, the success of
this strategy depended on a previous direct noise reduction by test mass
alignment. The exa... | 2305.03667v1 |
2023-08-16 | Generation of two-giant-atom entanglement in waveguide-QED systems | We study the generation of quantum entanglement between two giant atoms
coupled to a one-dimensional waveguide. Since each giant atom interacts with
the waveguide at two separate coupling points, there exist three different
coupling configurations in the two-atom waveguide system: separated, braided,
and nested couplin... | 2308.08108v2 |
2023-10-03 | Light polarons with electron-phonon coupling | In most cases, as the strength of electron-phonon coupling increases, the
effective mass of polarons typically increases. However, in this paper, we
uncover a fascinating phenomenon: the presence of light polarons even within
the strong coupling regime, where electron-phonon coupling includes both
Holstein and bond typ... | 2310.01958v1 |
2024-02-29 | Coupling a single spin to high-frequency motion | Coupling a single spin to high-frequency mechanical motion is a fundamental
bottleneck of applications such as quantum sensing, intermediate and
long-distance spin-spin coupling, and classical and quantum information
processing. Previous experiments have only shown single spin coupling to
low-frequency mechanical reson... | 2402.19288v1 |
2024-03-08 | Contact SHIV SoS or Contact ${\bf S}$tructure ${\bf H}$olographique at ${\bf I}$ntermediate coupling and bulk ${\bf V}$iscosity, and ${\bf S}$peed ${\bf o}$f ${\bf S}$ound | Thermal QCD systems like strongly coupled QGP require not only a large
't-Hooft coupling but also a finite gauge coupling arXiv:hep-ph/0701201. Unlike
almost all top-down holographic models in the literature, holographic large-$N$
thermal QCD models based on this assumption, therefore necessarily require
addressing thi... | 2403.10541v1 |
2010-09-02 | Intercellular Coupling Regulates the Period of the Segmentation Clock | Coupled biological oscillators can tick with the same period. How this
collective period is established is a key question in understanding biological
clocks. We explore this question in the segmentation clock, a population of
coupled cellular oscillators in the vertebrate embryo that sets the rhythm of
somitogenesis, t... | 1009.0456v1 |
2012-10-26 | Shy and Fixed-Distance Couplings of Brownian Motions on Manifolds | In this paper we introduce three Markovian couplings of Brownian motions on
smooth Riemannian manifolds without boundary which sit at the crossroad of two
concepts. The first concept is the one of shy coupling put forward in
\cite{Burdzy-Benjamini} and the second concept is the lower bound on the Ricci
curvature and th... | 1210.7217v7 |
2016-05-07 | From strong to weak coupling in holographic models of thermalization | We investigate the analytic structure of thermal energy-momentum tensor
correlators at large but finite coupling in quantum field theories with gravity
duals. We compute corrections to the quasinormal spectra of black branes due to
the presence of higher derivative $R^2$ and $R^4$ terms in the action, focusing
on the d... | 1605.02173v2 |
2017-07-16 | Chimera states in two-dimensional networks of locally coupled oscillators | Chimera state is defined as a mixed type of collective state in which
synchronized and desynchronized subpopulations of a network of coupled
oscillators coexist and the appearance of such anomalous behavior has strong
connection to diverse neuronal developments. Most of the previous studies on
chimera states are not ex... | 1707.08443v2 |
2021-09-01 | Influence of Rashba spin-orbit and Rabi couplings on the miscibility and ground state phases of binary Bose-Einstein condensates | We study the miscibility properties and ground state phases of two-component
spin-orbit (SO) coupled Bose-Einstein condensates (BECs) in a harmonic trap
with strong axial confinement. By numerically solving the coupled
Gross-Pitaevskii equations in the two-dimensional setting, we analyze the
SO-coupled BECs for two pos... | 2109.00491v1 |
2021-10-04 | Influence of Allee Effect on Extreme Events in Coupled Three Species Systems | We consider the dynamics of two coupled three-species population patches,
incorporating the Allee Effect, focussing on the onset of extreme events in the
coupled system. First we show that the interplay between coupling and the Allee
effect may change the nature of the dynamics, with regular periodic dynamics
becoming ... | 2110.01192v1 |
1996-03-12 | On the Problem of the Coupled Cavity Chain Characteristic Calculations | This paper presents the results of studies in elaboration of a mathematical
model of the cavity-chain slow wave structures. Considered is the problem of
coupling of an infinitely long cylindrical cavity chain coupled through
centerholes in the dividing walls of finite thickness without the assumption
about smallness of... | 9603001v1 |
2001-06-13 | Cosmological magnetic fields from photon coupling to fermions and bosons in inflation | We consider several gauge invariant higher dimensional operators that couple
gravity, gauge fields and scalar or fermionic fields and thus break conformal
invariance. In particular, we consider terms that break conformal invariance by
the photon coupling to heavy and light fermions. While the coupling to heavy
fermions... | 0106247v1 |
2003-06-13 | Gauge Coupling Variation in Brane Models | We consider the space-time variation of gauge couplings in brane-world models
induced by the coupling to a bulk scalar field. A variation is generated by the
running of the gauge couplings with energy and a conformal anomaly while going
from the Jordan to the Einstein frame. We indicate that the one-loop
corrections ca... | 0306279v2 |
2006-12-22 | Cosmologies with dynamical and coupled Dark Energy vs. CMB data | We compare a large set of cosmologies with WMAP data, performing a fit based
on a MCMC algorithm. Besides of LCDM models, we take dynamical DE models, where
DE and DM are uncoupled or coupled, both in the case of constant coupling and
in the case when coupling varies with suitable laws. DE however arises from a
scalar ... | 0612672v1 |
1992-09-08 | A Simple Model for Coupled Magnetic and Quadrupolar Instabilities in Uranium Heavy-Fermion Materials | We present a mean-field calculation of the phase diagram of a simple model of
localized moments, in the hexagonal uranium heavy-fermion compounds. The model
considers a non-Kramers quadrupolar doublet ground state magnetically coupled
with a singlet excited-state, favoring in-plane van-Vleck magnetism, as has
been conj... | 9209008v1 |
1996-09-13 | Renormalization of Fluctuating Tilted-Hexatic Membranes | We consider the tilted-hexatic Hamiltonian on the fluctuating membranes. A
renormalization-group analysis leads us to find two critical regions; one
corresponds to the strong coupling regime of the gradient cross coupling, the
other to the weak coupling regime. In the strong coupling regime, we find the
locked tilted-h... | 9609125v2 |
1996-12-11 | Competition between Hund-Rule Coupling and Kondo Effect | We investigate a problem about the competition between the hybridization and
the Hund-rule coupling by applying the Wilson numerical renormalization-group
method to the extended Kondo model where the impurity spin interacts via the
Hund-rule coupling, with an extra spin which is isolated from the conduction
electrons. ... | 9612108v1 |
2000-03-20 | Metal-insulator transitions in systems with electron-phonon and Coulomb interactions | We consider a model which includes the electron-phonon coupling to Ag or
Jahn-Teller Hg phonons, the Coulomb interaction U and an exchange integral K.
We study the metal-insulator transition for the integer fillings n=3 and 4. We
find that the coupling to Ag phonons increases the critical value Uc where the
transition ... | 0003335v1 |
2000-04-16 | Thermodynamic Properties of Three-Dimensional Orthogonal Dimer Model for SrCu$_2$(BO$_3$)$_2$ | Effects of the inter-layer couplings for the orthogonal dimer system
SrCu$_2$(BO$_3$)$_2$ are discussed. The spin-gap $\Delta$ of the
three-dimensional model is independent of the inter-layer couplings when they
are small. Therefore at low temperatures ($T < \Delta$) thermodynamic
properties are described well by the t... | 0004260v1 |
2001-02-26 | Electronic properties of single and coupled anisotropic quantum dots in a magnetic field, spin interactions and switching | We determined the eigenstates of a single electron in a parabolic anisotropic
2D quantum dot in a magnetic field. Using obtained expressions for these
eigenstates, we study the spin coupling J between two electrons located in two
laterally coupled anisotropic quantum dots (QD). The exhange coupling J is
calculated usin... | 0102467v1 |
2002-02-06 | Pseudogap and spectral function from superconducting fluctuations to the bosonic limit | The crossover from weak to strong coupling for a three dimensional continuum
model of fermions interacting via an attractive contact potential is studied
above the superconducting critical temperature. The pair-fluctuation
propagator, the one-loop self-energy, and the spectral function are
investigated in a systematic ... | 0202084v1 |
2003-07-23 | Dynamic Magnetoelectric Effects in Bulk and Layered composites of Cobalt Zinc Ferrite and Lead Zirconate Titanate | Low frequency magnetoelectric (ME) coupling has been investigated in bulk and
multilayers of cobalt zinc ferrite, Co1-xZnxFe2O4 (x=0-0.6), and lead zirconate
titanate. In bulk samples, the transverse and longitudinal couplings are weak
and are of equal magnitude. A substantial strengthening of ME interactions is
eviden... | 0307597v1 |
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