publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2020-03-30 | Tunable interlayer magnetism and band topology in van der Waals heterostructures of MnBi2Te4-family materials | Manipulating the interlayer magnetic coupling in van der Waals magnetic
materials and heterostructures is the key to tailoring their magnetic and
electronic properties for various electronic applications and fundamental
studies in condensed matter physics. By utilizing the MnBi2Te4-family compounds
and their heterostru... | 2003.13485v1 |
2020-04-11 | A gradient flow formulation of the Lohe matrix model with a high-order polynomial coupling | We present a generalized Lohe matrix model for a homogeneous ensemble with
higher order couplings via the gradient flow approach. For the homogeneous free
flow with the same hamiltonian, it is well known that the Lohe matrix model
with cubic couplings can recast as a gradient system with a potential which is
a squared ... | 2004.05411v1 |
2020-04-13 | Revealing ultra-strong magnon-photon coupling in a polar antiferromagnet Fe2Mo3O8 by time domain terahertz spectroscopy | Strong coupling between magnon and electromagnetic wave can lead to the
formation of a coupled spinphoton quasiparticle named as magnon-polariton. The
phenomenon is well studied for ferromagnetic systems inside microwave cavities
in recent years. However, formation of magnon-polariton is rarely seen for an
antiferromag... | 2004.05823v2 |
2020-04-19 | Coherent dynamics in a dual-coupling spin-boson model | We study the dynamics of a particle tunneling between the ground states of a
symmetric double potential well system, in the presence of simultaneous
diagonal and non-diagonal couplings to an Ohmic oscillator bath. We use the
noninteracting-blip approximation to investigate coherence effects across a
wide range of syste... | 2004.08974v4 |
2020-04-20 | Propagative oscillations in co-directional polariton waveguide couplers | We report on novel exciton-polariton routing devices created to study and
purposely guide light-matter particles in their condensate phase. In a
co-directional coupling device, two waveguides are connected by a partially
etched section which facilitates tunable coupling of the adjacent channels.
This evanescent couplin... | 2004.09348v2 |
2020-04-21 | Higher Dimensional Limit Cycles and Coupling Induced Synchronization in Dynamical Systems | Limit cycles (attractors for neighbouring periodic orbits in a dissipative
dynamical system) have been widely studied but the corresponding generalization
for quasi periodic orbits have rarely been discussed. Here we investigate
"higher dimensional limit cycles" by analysing a pair of coupled non identical
Van der Pol ... | 2004.10004v1 |
2020-04-21 | Interlayer Coupling Induced Quasiparticles | We present an exact treatment of layered many-body electronic systems in the
presence of interlayer coupling within the Schwinger functional derivative
approach on the Keldysh contour. Our transparent approach allows us to clarify
the definition of interlayer coupling by showing the independent roles
hybridization and ... | 2004.10311v2 |
2020-04-27 | Spin-orbit coupled superconductivity: Rashba-Hubbard model on the square lattice | The weak-coupling renormalization group method is an asymptotically exact
method to find superconducting instabilities of a lattice model of correlated
electrons. Here we extend it to spin-orbit coupled lattice systems and study
the emerging superconducting phases of the Rashba-Hubbard model. Since Rashba
type spin-orb... | 2004.12624v2 |
2020-05-03 | Hidden Signals of New Physics within the Yukawa Couplings of the Higgs boson | The Large Hadron Collider (LHC) has measured the Higgs boson couplings with
the heavier particles of the Standard Model (SM), and they seem to lay on a
single line as function of the particle mass, as predicted in the SM. However a
complete test of this property must involve the lighter generations, and the
coming meas... | 2005.01153v2 |
2020-05-01 | Application of accelerated fixed-point algorithms to hydrodynamic well-fracture coupling | The coupled simulations of dynamic interactions between the well, hydraulic
fractures and reservoir have significant importance in some areas of petroleum
reservoir engineering. Several approaches to the problem of coupling between
the numerical models of these parts of the full system have been developed in
the indust... | 2005.01620v1 |
2020-05-11 | Dynamics of a Z2 symmetric EdGB gravity in spherical symmetry | We report on a numerical investigation of black hole evolution in an Einstein
dilaton Gauss-Bonnet (EdGB) gravity theory where the Gauss-Bonnet coupling and
scalar (dilaton) field potential are symmetric under a global change in sign of
the scalar field (a 'Z2' symmetry). We find that for sufficiently small
Gauss-Bonne... | 2005.05417v2 |
2020-05-16 | Spin-orbit-parity coupled superconductivity in topological monolayer WTe$_2$ | Recent experiments reported gate-induced superconductivity in the monolayer
1T$'$-WTe$_2$ which is a two-dimensional topological insulator in its normal
state [1, 2]. The in-plane upper critical field $B_{c2}$ is found to exceed the
conventional Pauli paramagnetic limit $B_p$ by 1-3 times. The enhancement
cannot be exp... | 2005.08007v2 |
2020-05-16 | Discrete solitons dynamics in $\cal{PT}$-symmetric oligomers with complex-valued couplings | We consider an array of double oligomers in an optical waveguide device. A
mathematical model for the system is the coupled discrete nonlinear
Schr\"odinger (NLS) equations, where the gain-and-loss parameter contributes to
the complex-valued linear coupling. The array caters to an optical simulation
of the parity-time ... | 2005.08947v4 |
2020-05-19 | Probing the spectral dimension of quantum network geometries | We consider an environment for an open quantum system described by a "Quantum
Network Geometry with Flavor" (QNGF) in which the nodes are coupled quantum
oscillators. The geometrical nature of QNGF is reflected in the spectral
properties of the Laplacian matrix of the network which display a finite
spectral dimension, ... | 2005.09665v2 |
2020-05-27 | Waveform relaxation for low frequency coupled field/circuit differential-algebraic models of index 2 | Motivated by the task to design quench protection systems for superconducting
magnets in particle accelerators we address a coupled field/circuit simulation
based on a magneto-quasistatic field modeling. We investigate how a waveform
relaxation of Gau{\ss}-Seidel type performs for a coupled simulation when
circuit solv... | 2005.13272v1 |
2020-05-28 | Multiple odd-parity superconducting phases in bilayer transition metal dichalcogenides | We study unconventional superconductivity in a two-dimensional locally
noncentrosymmetric triangular lattice. The model is relevant to bilayer
transition metal dichalcogenides with 2H$_b$ stacking structure, for example.
The superconducting instability is analyzed by solving the linearized
Eliashberg equation within th... | 2005.13963v1 |
2020-05-28 | High-harmonic generation in spin-orbit coupled systems | We study high-harmonic generation in two-dimensional electron systems with
Rashba and Dresselhaus spin-orbit coupling and derive harmonic generation
selection rules with the help of group theory. Based on the bandstructures of
these minimal models and explicit simulations we reveal how the spin-orbit
parameters control... | 2005.14293v1 |
2020-07-01 | Photon-Dressed Bloch-Siegert Shift in an Ultrastrongly Coupled Circuit Quantum Electrodynamical System | A cavity quantum electrodynamical (QED) system beyond the strong-coupling
regime is expected to exhibit intriguing quantum phenomena. Here we report a
direct measurement of the photon-dressed qubit transition frequencies up to
four photons by harnessing the same type of state transitions in an
ultrastrongly coupled cir... | 2007.00255v1 |
2020-07-02 | The KSVZ Axion and Pseudo-Nambu-Goldstone Boson Models for the XENON1T Excess | The XENON1T excess can be explained by the Axion Like Particle (ALP) dark
matter with mass around 2.5 keV. However, there are three problems needed to be
solved: suppressing the coupling $g_{a\gamma}$ between the ALP and photon, and
generating the proper coupling $g_{ae}$ between the ALP and electron as well as
the cor... | 2007.00874v1 |
2020-07-06 | Renormalization of Galilean Electrodynamics | We study the quantum properties of a Galilean-invariant abelian gauge theory
coupled to a Schr\"odinger scalar in 2+1 dimensions. At the classical level,
the theory with minimal coupling is obtained from a null-reduction of
relativistic Maxwell theory coupled to a complex scalar field in 3+1 dimensions
and is closely r... | 2007.03033v2 |
2020-07-18 | Concomitant enhancement of electron-phonon coupling and electron-electron interaction in graphene decorated with ytterbium | The interplay between electron-electron interaction and electron-phonon
coupling has been one of the key issues in graphene as it can provide
information on the origin of enhanced electron-phonon coupling in graphene by
foreign atoms. In ytterbium-decorated graphene on SiC substrate,
electron-phonon coupling exhibits s... | 2007.09387v1 |
2020-07-19 | A Flexible Optimization Framework for Regularized Matrix-Tensor Factorizations with Linear Couplings | Coupled matrix and tensor factorizations (CMTF) are frequently used to
jointly analyze data from multiple sources, also called data fusion. However,
different characteristics of datasets stemming from multiple sources pose many
challenges in data fusion and require to employ various regularizations,
constraints, loss f... | 2007.09605v1 |
2020-07-19 | Explosive synchronization in temporal networks: A comparative study | We present a comparative study on Explosive Synchronization (ES) in temporal
networks consisting of phase oscillators. The temporal nature of the networks
is modeled with two configurations: (1) oscillators are allowed to move in a
closed two dimensional box such that they couple with their neighbors, (2)
oscillators a... | 2007.09801v2 |
2020-07-22 | Optical simulation of atomic decay enhancement and suppression | We discuss the decay of a two-level system into an engineered reservoir of
coupled harmonic oscillators in the single-excitation manifold and propose its
optical simulation with an homogeneous chain of coupled waveguides where
individual elements couple to an external waveguide. We use two approaches to
study the decay... | 2007.11485v2 |
2020-07-23 | Doped Mott Insulators in the Triangular Lattice Hubbard Model | We investigate the evolution of the Mott insulators in the triangular lattice
Hubbard Model, as a function of hole doping $\delta$ in both the strong and
intermediate coupling limits. Using the advanced density matrix renormalization
group (DMRG) method, at light hole doping $\delta\lesssim 10\%$, we find a
significant... | 2007.11963v2 |
2020-08-05 | Chimera states in ring-star network of Chua circuits | We investigate the emergence of amplitude and frequency chimera states in
ring-star networks consisting of identical Chua circuits connected via nonlocal
diffusive, bidirectional coupling. We first identify single-well chimera
patterns in a ring network under nonlocal coupling schemes. When a central node
is added to t... | 2008.01907v1 |
2020-08-05 | Coupling between particle shape and long-range interaction in the high-density regime | By using long-range interacting polygons, we experimentally probe the
coupling between particle shape and long-range interaction. For two typical
space-filling polygons, square and triangle, we find two types of coupling
modes that predominantly control the structure formation. Specifically, the
rotational ordering of ... | 2008.01947v1 |
2020-08-06 | Constraining $t \to u$ flavor changing neutral Higgs coupling at the LHC | We study the constraints on $t\to u$ flavor changing neutral Higgs (FCNH)
coupling, and how it may be explored further at the Large Hadron Collider
(LHC). In the general two Higgs doublet model, such transitions can be induced
by a nonzero $\rho_{tu}$ Yukawa coupling. We show that such couplings can be
constrained by e... | 2008.02573v1 |
2020-08-07 | Bipolaron liquids at strong Peierls electron-phonon couplings | We use the Density Matrix Renormalization Group method to study a
one-dimensional chain with Peierls electron-phonon coupling, which describes
the modulation of the electron hopping by lattice distortions. We demonstrate
that this system is stable against phase separation in the dilute density
limit. We only find phase... | 2008.03304v2 |
2020-08-10 | Efficiently-coupled microring circuit for on-chip cavity QED with trapped atoms | We present a complete fabrication study of an efficiently-coupled microring
optical circuit tailored for cavity quantum electrodynamics (QED) with trapped
atoms. The microring structures are fabricated on a transparent membrane with
high in-vacuum fiber edge-coupling efficiency in a broad frequency band. In
addition, a... | 2008.04263v2 |
2020-08-18 | First-principles study of exchange coupling constants in Nd$_x$Fe$_{1-x}$ amorphous alloy | We investigate the exchange coupling constant $J_{ij}$ in Nd$_x$Fe$_{1-x}$
amorphous alloys with different compositions within the framework of
first-principles calculation. We observed a strong atomic-dependence of
$J_{ij}$ and its fluctuations. We show that the composition strongly affects
the distance dependence of ... | 2008.07735v1 |
2020-08-18 | Periodic Coupling inhibits Second-order Consensus on Networks | Consensus algorithms on networks have received increasing attention in recent
years for various applications ranging from animal flocking to multi-vehicle
co-ordination. Building on the established model for second-order consensus of
multi-agent networks, we uncover a mechanism inhibiting the formation of
collective co... | 2008.08163v1 |
2020-08-26 | Direct Imaging of Resonant Phonon-Magnon Coupling | Direct detection of phonons is important for the investigation of information
interconversion between the resonantly coupled magnons and phonons. Here we
report resonant coupling of magnons and phonons, which can be directly
visualized by using micro focused Brillouin light scattering in Ni/LiNbO3
hybrid heterostructur... | 2008.11391v2 |
2020-10-01 | Modeling coupled spin and lattice dynamics | A unified model of molecular and atomistic spin dynamics is presented
enabling simulations both in microcanonical and canonical ensembles without the
necessity of additional phenomenological spin damping. Transfer of energy and
angular momentum between the lattice and the spin systems is achieved by a
coupling term bas... | 2010.00642v1 |
2020-10-11 | Enhancing vibrational light-matter coupling strength beyond the molecular concentration limit using plasmonic arrays | Vibrational strong coupling is emerging as a promising tool to modify
molecular properties, by making use of hybrid light-matter states known as
polaritons. Fabry-Perot cavities filled with organic molecules are typically
used, and the molecular concentration limits the maximum reachable coupling
strength. Developing m... | 2010.05282v2 |
2020-10-15 | Equivalence of non-minimally coupled cosmologies by Noether symmetries | We discuss non-minimally coupled cosmologies involving different geometric
invariants. Specifically, actions containing a non-minimally coupled scalar
field to gravity described, in turn, by curvature, torsion and Gauss--Bonnet
scalars are considered. We show that couplings, potentials and kinetic terms
are determined ... | 2010.07914v1 |
2020-10-19 | Ultrafast dynamics in relativistic Mott insulators | We study the photoinduced ultrafast dynamics in relativistic Mott insulators,
i.e., Mott insulators with strong spin-orbit coupling. For this purpose, we
consider a minimal one-band Hubbard model on lattices with square and
triangular symmetries, as relevant for layered transition metal compounds such
as Sr$_2$IrO$_4$.... | 2010.09253v1 |
2020-10-22 | Euclidean wormhole in the SYK model | We study a two-site Sachdev-Ye-Kitaev (SYK) model with complex couplings, and
identify a low temperature transition to a gapped phase characterized by a
constant in temperature free energy. This transition is observed without
introducing a coupling between the two sites, and only appears after ensemble
average over the... | 2010.11633v3 |
2020-10-25 | Topologically protected strong coupling and entanglement between distant quantum emitters | The realization of robust strong coupling and entanglement between distant
quantum emitters (QEs) is very important for scalable quantum information
processes. However, it is hard to achieve it based on conventional systems.
Here, we propose theoretically and demonstrate numerically a scheme to realize
such strong coup... | 2010.13075v1 |
2020-10-28 | Ground-to-excited derivative couplings for the density functional based tight-binding method: Semi-local and long-range corrected formulations | A derivation of non-adiabatic coupling vectors for the density functional
based tight binding method (DFTB) between ground and excited states is
presented. The analytical result is valid both for semi-local and long-range
corrected DFTB and includes all required Pulay terms. Electron-translation
factors lead to a conce... | 2010.14840v1 |
2020-10-28 | Complete Coupling of Focused Light to Surface Polaritons | Surface polaritons display short wavelengths compared to propagating light,
thus enabling large spatial concentration and enhancement of electromagnetic
energy. However, this wavelength mismatch is generally accompanied by poor
light-to-polaritons coupling that limits potential applications in areas such
as optical sen... | 2010.14923v1 |
2020-11-02 | Controlled Perturbation-Induced Switching in Pulse-Coupled Oscillator Networks | Pulse-coupled systems such as spiking neural networks exhibit nontrivial
invariant sets in the form of attracting yet unstable saddle periodic orbits
where units are synchronized into groups. Heteroclinic connections between such
orbits may in principle support switching processes in those networks and
enable novel kin... | 2011.00888v1 |
2020-11-10 | Beyond the single-site approximation modeling of electron-phonon coupling effects on resonant inelastic X-ray scattering spectra | Resonant inelastic X-ray scattering (RIXS) is used increasingly for
characterizing low-energy collective excitations in materials. RIXS is a
powerful probe, which often requires sophisticated theoretical descriptions to
interpret the data. In particular, the need for accurate theories describing
the influence of electr... | 2011.05400v3 |
2020-11-12 | A quantum optics approach to photoinduced electron transfer in cavities | We study a simple model for photoinduced electron transfer reactions for the
case of many donor-acceptor pairs that are collectively and homogeneously
coupled to a photon mode of a cavity. We describe both coherent and dissipative
collective effects resulting from this coupling within the framework of a
quantum optics ... | 2011.06590v2 |
2020-11-13 | Quantum simulations of light-matter interactions in arbitrary coupling regimes | Light-matter interactions are an established field that is experiencing a
renaissance in recent years due to the introduction of exotic coupling regimes.
These include the ultrastrong and deep strong coupling regimes, where the
coupling constant is smaller and of the order of the frequency of the light
mode, or larger ... | 2011.06836v1 |
2020-11-13 | Demonstration of a High-Fidelity CNOT for Fixed-Frequency Transmons with Engineered ZZ Suppression | Improving two-qubit gate performance and suppressing crosstalk are major, but
often competing, challenges to achieving scalable quantum computation. In
particular, increasing the coupling to realize faster gates has been
intrinsically linked to enhanced crosstalk due to unwanted two-qubit terms in
the Hamiltonian. Here... | 2011.07050v1 |
2020-11-14 | Synchronization in dynamical systems coupled via multiple directed networks | We study synchronization and consensus in a group of dynamical systems
coupled via multiple directed networks. We show that even though the coupling
in a single network may not be sufficient to synchronize the systems,
combination of multiple networks can contribute to synchronization. We
illustrate how the effectivene... | 2011.07206v4 |
2020-11-16 | Protected generation of dissipative Kerr solitons in supermodes of coupled optical microresonators | The driven-dissipative photonic dimer comprised of two evanescently coupled
high-Q microresonators is a fundamental element of multimode soliton lattices.
It has demonstrated a variety of emergent nonlinear phenomena including
supermode soliton generation, symmetry breaking, and soliton hopping. In this
article, we pre... | 2011.07976v2 |
2020-11-16 | Generating Target Graph Couplings for QAOA from Native Quantum Hardware Couplings | We present methods for constructing any target coupling graph using limited
global controls in an Ising-like quantum spin system. Our approach is motivated
by implementing the quantum approximate optimization algorithm (QAOA) on
trapped ion quantum hardware to find approximate solutions to Max-Cut. We
present a mathema... | 2011.08165v2 |
2020-11-22 | Gain-assisted critical coupling for enhanced optical absorption in graphene | Enhanced optical absorption in two-dimensional (2D) materials has recently
moved into the focus of nanophotonics research. In this work, we present a
gain-assisted method to achieve critical coupling and demonstrate the maximum
absorption in undoped monolayer graphene in the near-infrared. In a two-port
system composed... | 2011.10907v1 |
2020-11-25 | Four coupled SYK models and Nearly AdS$_2$ gravities: Phase Transitions in Traversable wormholes and in Bra-ket wormholes | We study four coupled SYK models and nearly AdS$_2$ gravities. In the SYK
model side, we construct a model that couples two copies of two coupled SYK
models. In nearly AdS$_2$ gravity side, we entangle matter fields in two copies
of traversable wormholes. In both cases, the systems show first order phase
transitions at... | 2011.12962v2 |
2021-01-05 | Strong Phonon-Cavity Coupling and Parametric Interaction in a Single Microcantilever under Ambient Conditions | Parametrically tuning the oscillation dynamics of coupled
micro/nano-mechanical resonators through a mechanical pump scheme has recently
attracted great attentions from fundamental physics to various applications.
However, the special design of the coupled resonators and low dissipation
operation conditions significant... | 2101.01357v3 |
2021-01-07 | Dressed Energy Levels in Strongly Interacting Atoms | We investigate the effect of strong interaction in the dressed energy levels
of the two level emitters. Strong dipole-dipole interactions give rise to new
sidebands in the fluorescence spectrum due to specific couplings among the
collective dressed levels which in turn depends on the spatial configuration of
atoms. The... | 2101.02741v1 |
2021-01-07 | A lattice Boltzmann model for the coupled cross-diffusion-fluid system | In this paper, we propose a lattice Boltzmann (LB) model for the generalized
coupled cross-diffusion-fluid system. Through the direct Taylor expansion
method, the proposed LB model can correctly recover the macroscopic equations.
The cross diffusion terms in the coupled system are modeled by introducing
additional coll... | 2101.03055v1 |
2021-01-10 | Emergent behaviors of homogeneous Lohe Hermitian sphere particles under time-delayed interactions | We study emergent behaviors of the Lohe hermitian sphere(LHS) model with a
time-delay for a homogeneous ensemble. The LHS model is a complex counterpart
of the Lohe sphere(LS) aggregation model on the unit sphere in Euclidean space,
and it describes the aggregation of particles on the unit hermitian sphere in
$\mathbb{... | 2101.03451v1 |
2021-01-12 | Explosive synchronization in interlayer phase-shifted Kuramoto oscillators on multiplex networks | We show that an introduction of a phase parameter ($\alpha$), with $0 \le
\alpha \le \pi/2$, in the interlayer coupling terms of multiplex networks of
Kuramoto oscillators can induce explosive synchronization (ES) in the
multiplexed layers. Along with the {\alpha} values, the hysteresis width is
determined by the inter... | 2101.04330v1 |
2021-01-12 | Covariant canonical gauge theory of gravitation for fermions | We derive the interaction of fermions with a dynamical space-time based on
the postulate that the description of physics should be independent of the
reference frame, which means to require the form-invariance of the fermion
action under diffeomorphisms. The derivation is worked out in the Hamiltonian
formalism as a ca... | 2101.04467v3 |
2021-01-13 | Dipolar coupling of nanoparticle-molecule assemblies: An efficient approach for studying strong coupling | Strong light-matter interactions facilitate not only emerging applications in
quantum and non-linear optics but also modifications of materials properties.
In particular the latter possibility has spurred the development of advanced
theoretical techniques that can accurately capture both quantum optical and
quantum che... | 2101.05160v1 |
2021-01-15 | The anomalous $Zb\bar{b}$ couplings: From LEP to LHC | The bottom quark forward-backward asymmetry ($A_{FB}^b$) data at LEP exhibits
a long-standing discrepancy with the standard model prediction. We propose a
novel method to probe the $Zb\bar{b}$ interactions through $gg\to Zh$
production at the LHC, which is sensitive to the axial-vector component of the
$Zb\bar{b}$ coup... | 2101.06261v2 |
2021-01-20 | Coupling modifies the quantum fluctuations of entangled oscillators | Coupled oscillators are among the simplest composite quantum systems in which
the interplay of entanglement and interaction may be explored. We examine the
effects of coupling on fluctuations of the coordinates and momenta of the
oscillators in a single-excitation entangled state. We discover that coupling
acts as a me... | 2101.08304v1 |
2021-01-19 | Dynamic interaction induced explosive death | Most previous studies on coupled dynamical systems assume that all
interactions between oscillators take place uniformly in time, but in reality,
this does not necessarily reflect the usual scenario. The heterogeneity in the
timings of such interactions strongly influences the dynamical processes. Here,
we introduce a ... | 2101.09262v1 |
2021-01-27 | Spin-memory loss induced by bulk spin-orbit coupling at ferromagnet/heavy-metal interfaces | A spin current through a ferromagnet/heavy-metal interface may shrink due to
the spin-flip at the interface, resulting in the spin-memory loss. Here we
propose a mechanism of the spin-memory loss. In contrast to other mechanisms
based on interfacial spin-orbit coupling, our mechanism is based on the bulk
spin-orbit cou... | 2101.11438v1 |
2021-01-28 | Photonic heat rectification in a coupled qubits system | We theoretically investigate a quantum heat diode based on two interacting
flux qubits coupled to two heat baths. Rectification of heat currents is
achieved by asymmetrically coupling the qubits to the reservoirs modelled as
dissipative $RLC$ resonators. We find that the coherent interaction between the
qubits can be e... | 2101.11936v1 |
2021-01-29 | Strong coupling between scales in a multi-scalar model of urban dynamics | Urban evolution processes occur at different scales, with intricate
interactions between levels and relatively distinct type of processes. To what
extent actual urban dynamics include an actual strong coupling between scales,
in the sense of both top-down and bottom-up feedbacks, remains an open issue
with important pr... | 2101.12725v1 |
2021-03-01 | Tipping induced by multiplexing on two layer networks | We report the study of sudden transitions or tipping in a collection of
systems induced due to multiplexing with another network of systems. The
emergent dynamics of oscillators on one layer can undergo a sudden transition
to steady state due to indirect coupling with a shared environment, mean field
couplings and conj... | 2103.00722v2 |
2021-03-01 | Evolution of Majorona zero-energy edge states in a $T^2 = -1$ symmetry protected 1D topological superconductor with dominant spin-orbit coupling | We consider a 1D topological superconductor (TSC) constructed by coupling a
pair of Kitaev's Majorana chains with opposite spin configurations. Such a 1D
lattice model is known to be protected by a $T^2 = -1$ time-reversal symmetry.
Furthermore, we consider a modeled Rashba spin-orbit coupling on such a system
of $T^2=... | 2103.00960v1 |
2021-03-03 | $W^+W^-H$ production through bottom quarks fusion at hadron colliders | With the standard model working well in describing the collider data, the
focus is now on determining the standard model parameters as well as for any
hint of deviation. In particular, the determination of the couplings of the
Higgs boson with itself and with other particles of the model is important to
better understa... | 2103.02682v1 |
2021-03-04 | Ultrafast Processes in Isomeric Pyrene-N-methylacetamides: Formation of Hydrogen Bond Induced Static Excimers with Varied Coupling Strength | Pyrene based molecules are inclined to form excimers through self-association
upon photoexcitation. In this work, the pyrene core is functionalized with
N-methylacetamide group at the position 1 or 2, to develop
pyren-1-methylacetamide (PyMA1) and pyren-2-methylacetamide (PyMA2),
respectively. Upon photoexcitation, PyM... | 2103.03002v1 |
2021-03-04 | Inflationary magnetogenesis: solving the strong coupling and its non-Gaussian signatures | The simplest model of primordial magnetogenesis can provide scale-invariant
magnetic fields that can explain the present abundances of it in the cosmic
scales. Two kinds of solutions of the coupling function can lead to such
phenomena and both of them suffer from the problems of either strong-coupling
or large backreac... | 2103.03159v2 |
2021-03-10 | Probing CP Violation in Photon Self-Interactions with Cavities | In this paper we study CP violation in photon self-interactions at low
energy. These interactions, mediated by the effective operator $FFF\tilde{F}$,
where ($\tilde F$) $F$ is the (dual) electromagnetic field strength, have yet
to be directly probed experimentally. Possible sources for such interactions
are weakly coup... | 2103.06298v2 |
2021-03-13 | Rapidity gap distribution in diffractive dissociation: predictions for future electron-ion colliders | We present predictions for the distribution of rapidity gaps in realistic
kinematics of future electron-ion colliders, based on numerical solutions of
the original Kovchegov-Levin equation and of its next-to-leading extension
taking into account the running of the strong coupling. We find that for the
rapidities we hav... | 2103.07724v1 |
2021-03-16 | Superconductivity, Charge-Density-Waves, and Bipolarons in the Holstein model | The electron-phonon (e-ph) interaction remains of great interest in condensed
matter physics and plays a vital role in realizing superconductors,
charge-density-waves (CDW), and polarons. We study the two-dimensional Holstein
model for e-ph coupling using determinant quantum Monte Carlo across a wide
range of its phase... | 2103.09242v2 |
2021-03-17 | Spin-orbit coupling within tightly focused circularly polarized spatiotemporal vortex wavepacket | Spin-orbital coupling and interaction as intrinsic light fields
characteristics have been extensively studied. Previous studies involve the
spin angular momentum (SAM) carried by circular polarization and orbital
angular momentum (OAM) associated with a spiral phase wavefront within the beam
cross section, where both t... | 2103.09467v1 |
2021-03-17 | Tunable exciton-optomechanical coupling in suspended monolayer MoSe2 | The strong excitonic effect in monolayer transition metal dichalcogenide
(TMD) semiconductors has enabled many fascinating light-matter interaction
phenomena. Examples include strongly coupled exciton-polaritons and nearly
perfect atomic monolayer mirrors. The strong light-matter interaction also
opens the door for dyn... | 2103.09897v2 |
2021-03-18 | Generalized Theory of Optical Resonator and Waveguide Modes and their Linear and Kerr Nonlinear Coupling | We derive a general theory of linear coupling and Kerr nonlinear coupling
between modes of dielectric optical resonators from first principles. The
treatment is not specific to a particular geometry or choice of mode basis, and
can therefore be used as a foundation for describing any phenomenon resulting
from any combi... | 2103.10479v3 |
2021-03-19 | Coupling fully resolved light particles with the Lattice Boltzmann method on adaptively refined grids | The simulation of geometrically resolved rigid particles in a fluid relies on
coupling algorithms to transfer momentum both ways between the particles and
the fluid. In this article, the fluid flow is modeled with a parallel Lattice
Boltzmann method using adaptive grid refinement to improve numerical
efficiency. The co... | 2103.10882v1 |
2021-03-22 | Calibration of Spin-Light Coupling by Coherently Induced Faraday Rotation | Calibrating the strength of the light-matter interaction is an important
experimental task in quantum information and quantum state engineering
protocols. The strength of the off-resonant light-matter interaction in
multi-atom spin oscillators can be characterized by the coupling rate
$\Gamma_\text{S}$. Here we utilize... | 2103.11729v1 |
2021-03-23 | Ultralow threshold bistability and generation of long-lived mode in a dissipatively coupled nonlinear system: application to magnonics | The prospect of a system possessing two or more stable states for a given
excitation condition is of topical interest with applications in information
processing networks. In this work, we establish the remote transfer of
bistability from a nonlinear resource in a dissipatively coupled two-mode
system. As a clear advan... | 2103.12861v1 |
2021-03-25 | Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime | In ground-based astronomy, starlight distorted by the atmosphere couples
poorly into single-mode waveguides but a correction by adaptive optics, even if
only partial, can boost coupling into the few-mode regime allowing the use of
photonic lanterns to convert into multiple single-mode beams. Corrected
wavefronts result... | 2103.14047v1 |
2021-03-26 | Cavity-induced exciton localisation and polariton blockade in two-dimensional semiconductors coupled to an electromagnetic resonator | Recent experiments have demonstrated strong light-matter coupling between
electromagnetic nanoresonators and pristine sheets of two-dimensional
semiconductors, and it has been speculated whether these systems can enter the
quantum regime operating at the few-polariton level. To address this question,
we present a first... | 2103.14484v3 |
2021-03-28 | Synchronization and Control for Multi-Weighted and Directed Complex Networks | The study of complex networks with multi-weights has been a hot topic
recently. For a network with a single weight, previous studies have shown that
they can promote synchronization. But for complex networks with multi-weights,
there are no rigorous analysis to show that synchronization can be reached
faster. In this p... | 2103.15230v1 |
2021-03-30 | A New bound on CP Violation in the $τ$ Lepton Yukawa Coupling and electroweak baryogenesis | The origin of the matter-antimatter asymmetry in the Universe is a
fundamental question of physics. Electroweak baryogenesis is a compelling
scenario for explaining it but it requires beyond the Standard Model sources of
the CP symmetry violation. The simplest possibility is CP violation in the
third generation fermion... | 2103.16569v2 |
2021-04-01 | Critical temperature in the BCS-BEC crossover with spin-orbit coupling | We review the study of the superfluid phase transition in a system of
fermions whose interaction can be tuned continuously along the crossover from
Bardeen-Cooper-Schrieffer (BCS) superconducting phase to a Bose-Einstein
condensate (BEC), also in the presence of a spin-orbit coupling. Below a
critical temperature the s... | 2104.00570v1 |
2021-04-02 | Site-dependent selection of atoms for homogeneous atom-cavity coupling | We demonstrate a method to obtain homogeneous atom-cavity coupling by
selecting and keeping $^{87}$Rb atoms that are near maximally coupled to the
cavity's standing-wave mode. We select atoms by imposing an AC Stark shift on
the ground state hyperfine microwave transition frequency with light injected
into the cavity. ... | 2104.01201v1 |
2021-04-04 | Interaction of massless minimally coupled scalar field with spinor field in de Sitter universe | The interaction of massless minimally coupled scalar field and spinor field $
\left( \Psi + \Phi_m \rightarrow \Psi + \Phi_m \right) $ is investigated and
the behavior of interaction and scattering matrix in Minkowski limit is
studied. It is seen that the massless minimally coupled scalar field operator,
the interactio... | 2104.01643v2 |
2021-04-06 | Orbital Optimization in Selected Configuration Interaction Methods | We study several approaches to orbital optimization in selected configuration
interaction plus perturbation theory (SCI+PT) methods, and test them on the
ground and excited states of three molecules using the semistochastic heatbath
configuration interaction (SHCI) method. We discuss the ways in which the
orbital optim... | 2104.02587v2 |
2021-04-08 | Tank-Circuit Assisted Coupling Method for Sympathetic Laser Cooling | We discuss the coupling of the motion of two ion species in separate Penning
traps via a common tank circuit. The enhancement of the coupling assisted by
the tank circuit is demonstrated by an avoided crossing behavior measurement of
the motional modes of two coupled ions. We propose an intermittent laser
cooling metho... | 2104.03719v1 |
2021-04-08 | Effective bath model for arrays of coupled non-Hermitian nanoresonators | Nanophotonics systems have recently been studied under the perspective of
non-Hermitian physics. Given their potential for wavefront control, nonlinear
optics and quantum optics, it is crucial to develop predictive tools to assist
their design. We present here a simple model relying on the coupling to an
effective bath... | 2104.03837v2 |
2021-04-14 | Spin-orbit gaps in the s and p orbital bands of an artificial honeycomb lattice | Muffin-tin methods have been instrumental in the design of honeycomb lattices
that show, in contrast to graphene, separated s and in-plane p bands, a p
orbital Dirac cone, and a p orbital flat band. Recently, such lattices have
been experimentally realized using the 2D electron gas on Cu(111). A possible
next avenue is... | 2104.06912v1 |
2021-04-15 | Stable and oscillating solitons of $\mathcal{PT}$-symmetric couplers with gain and loss in fractional dimension | Families of coupled solitons of $\mathcal{PT}$-symmetric physical models with
gain and loss in fractional dimension and in settings with and without
cross-interactions modulation (CIM), are reported. Profiles, powers, stability
areas, and propagation dynamics of the obtained $\mathcal{PT}$-symmetric
coupled solitons ar... | 2104.07218v1 |
2021-04-20 | Analytical results for the superflow of spin-orbit-coupled Bose-Einstein condensates in optical lattices | In this paper, we show that for sufficiently strong atomic interactions,
there exist analytical solutions of current-carrying nonlinear Bloch states at
the Brillouin zone edge to the model of spin-orbit-coupled Bose-Einstein
condensates (BECs) with symmetric spin interaction loaded into optical
lattices. These simple b... | 2104.09796v2 |
2021-04-24 | Spin-orbit-coupled fluids of light in bulk nonlinear media | We show that nonparaxial polarized light beams propagating in a bulk
nonlinear Kerr medium naturally exhibit a coupling between the motional and the
polarization degrees of freedom, realizing a spin-orbit-coupled mixture of
fluids of light. We investigate the impact of this mechanism on the Bogoliubov
modes of the flui... | 2104.11982v2 |
2021-04-26 | Weak and ultrastrong coupling limits of the quantum mean force Gibbs state | The Gibbs state is widely taken to be the equilibrium state of a system in
contact with an environment at temperature $T$. However, non-negligible
interactions between system and environment can give rise to an altered state.
Here we derive general expressions for this mean force Gibbs state, valid for
any system that ... | 2104.12606v2 |
2021-04-27 | Generation of an electromagnetic field nonminimally coupled to gravity during Higgs inflation | In the framework of Higgs inflation, we consider the electromagnetic field
nonminimally coupled to gravity via the parity-preserving $\propto RF^{2}$ and
parity-violating $\propto RF\tilde{F}$ terms. Using the perturbation theory to
the leading order in these couplings, we study the generation of the
electromagnetic fi... | 2104.14400v2 |
2021-04-30 | An augmented Lagrangian preconditioner for the magnetohydrodynamics equations at high Reynolds and coupling numbers | The magnetohydrodynamics (MHD) equations are generally known to be difficult
to solve numerically, due to their highly nonlinear structure and the strong
coupling between the electromagnetic and hydrodynamic variables, especially for
high Reynolds and coupling numbers. In this work, we present a scalable
augmented Lagr... | 2104.14855v2 |
2021-05-03 | Generalized Spatially Coupled Parallel Concatenated Convolutional Codes With Partial Repetition | We introduce generalized spatially coupled parallel concatenated codes
(GSC-PCCs), a class of spatially coupled turbo-like codes obtained by coupling
parallel concatenated codes (PCCs) with a fraction of information bits repeated
before the PCC encoding. GSC-PCCs can be seen as a generalization of the
original spatiall... | 2105.00698v1 |
2021-05-04 | Vibrations of Dimers of Mechanically Coupled Nanostructures: Analytical and Numerical Modeling | The coupling effects affecting the vibrations of two close nanostructures
(e.g., two metal nanoplates or nanospheres separated by a thin dielectric
layer) may considerably alter their vibrational eigenfrequencies, as
demonstrated by several recent experimental studies. In this work, we present
theoretical investigation... | 2105.01656v1 |
2021-05-06 | Two-beam Coupling in the Production of Quantum Correlated Images by Four-wave Mixing | We investigate the effect of 2-beam coupling in different imaging geometries
in generating intensity-difference squeezing from four-wave mixing (4WM) in Rb
atomic vapors. A recently-introduced dual-seeding technique can cancel out the
classical noise in a seeded four-wave mixing process. This dual-seeding
technique, ho... | 2105.02399v1 |
2021-05-06 | Spin-orbit coupling driven superfluid states in optical lattices at zero and finite temperatures | We investigate the quantum phase transitions of a two-dimensional
Bose-Hubbard model in the presence of a Rashba spin-orbit coupling with and
without thermal fluctuations. The interplay of single-particle hopping,
strength of spin-orbit coupling, and interspin interaction leads to superfluid
phases with distinct proper... | 2105.02747v2 |
2021-05-10 | Naturally-Coupled Dark Sectors | The dark sector, composed of the fields neutral under the Standard Model (SM)
gauge group, can couple to the SM through the Higgs, hypercharge and neutrino
portals, and pull the SM towards its scale by loop corrections. This
instability, not possible to prevent in the known SM completions like
supersymmetry due to thei... | 2105.04277v1 |
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