publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2014-12-14 | Strong Coupling Between P1 Diamond Impurity Centres and 3D Lumped Photonic Microwave Cavity | We report strong coupling between an ensemble of N impurity (P1) centres in
diamond and microwave photons using a unique double post re-entrant cavity. The
cavity is designed so that the magnetic component of the cavity field is
spatially separated from the electric component and focused into the small
volume in which ... | 1412.4331v2 |
2014-12-18 | Oscillons in coupled Bose-Einstein condensates | Long-lived, spatially localized, and temporally oscillating nonlinear
excitations are predicted by numerical simulation of coupled Gross-Pitaevskii
equations. These oscillons closely resemble the time-periodic breather
solutions of the sine-Gordon equation but decay slowly by radiating Bogoliubov
phonons. Their time-de... | 1412.5858v3 |
2014-12-22 | Circuit analog of quadratic optomechanics | We propose a superconducting electrical circuit that simulates a quadratic
optomechanical system. A capacitor placed between two transmission-line (TL)
resonators acts like a semi-transparent membrane, and a superconducting quantum
interference device (SQUID) that terminates a TL resonator behaves like a
movable mirror... | 1412.6869v1 |
2014-12-23 | Ultrastrong coupling in two-resonator circuit QED | We report on ultrastrong coupling between a superconducting flux qubit and a
resonant mode of a system comprised of two superconducting coplanar stripline
resonators coupled galvanically to the qubit. With a coupling strength as high
as 17% of the mode frequency, exceeding that of previous circuit quantum
electrodynami... | 1412.7372v1 |
2014-12-25 | Normal-mode splitting in the coupled system of hybridized nuclear magnons and microwave photons | In the weak ferromagnetic MnCO$_3$ system, a low-frequency collective spin
excitation (magnon) is the hybridized oscillation of nuclear and electron spins
coupled through the hyperfine interaction. By using a split-ring resonator, we
performed transmission spectroscopy measurements of MnCO$_3$ system and
observed, for ... | 1412.7799v3 |
2015-01-12 | Electron-Phonon Coupling and Thermal Conductance at a Metal-Semiconductor Interface: First-principles Analysis | The mechanism of heat transfer and the contribution of electron-phonon
coupling to thermal conductance of a metal-semiconductor interface remains
unclear in the present literature. We report ab initio simulations of a
technologically important titanium silicide (metal) - silicon (semiconductor)
interface to estimate th... | 1501.02763v2 |
2015-01-13 | Disformal couplings and the dark sector of the universe | Interactions between dark matter and dark energy, allowing both conformal and
and disformal couplings, are studied in detail. We discuss the background
evolution, anisotropies in the cosmic microwave background and large scale
structures. One of our main findings is that a large conformal coupling is not
necessarily di... | 1501.03073v3 |
2015-01-13 | Lab-frame observables for probing the top-Higgs interaction | We investigate methods to explore the CP nature of the $ t\bar{t}h $ coupling
at the LHC, focusing on associated production of the Higgs with a $t \bar{t}$
pair. We first discuss the constraints implied by low-energy observables and by
the Higgs-rate information from available LHC data, emphasizing that they
cannot pro... | 1501.03157v2 |
2015-01-14 | A Three-dimensional Study of Coupled Grain Boundary Motion with Junctions | A novel continuum theory of incoherent interfaces with triple junctions is
applied to study three-dimensional coupled grain boundary (GB) motion in
polycrystalline materials. The kinetic relations for grain dynamics, relative
sliding and migration of the boundary, and junction evolution are developed. In
doing so a vec... | 1501.03308v1 |
2015-01-16 | On localized vegetation patterns, fairy circles and localized patches in arid landscapes | We investigate the formation of localized structures with a varying width in
one and two-dimensional systems. The mechanism of stabilization is attributed
to strong nonlocal coupling mediated by a Lorentzian type of Kernel. We show
that, in addition to stable dips found recently [see, e.g., C. Fernandez-Oto,
M. G. Cler... | 1501.03958v1 |
2015-01-23 | Gravitating non-Abelian cosmic strings | In this paper we study regular cosmic string solutions of the non-Abelian
Higgs model coupled with the Einstein gravity. In order to do that, we
constructed a set of coupled differential ordinary equation. Because there is
no closed solution for this set of equations, we solve it numerically. The
solutions that we are ... | 1501.05804v2 |
2015-02-04 | Generating nonclassical photon-states via longitudinal couplings between superconducting qubits and microwave fields | Besides the conventional transverse couplings between superconducting qubits
(SQs) and electromagnetic fields, there are additional longitudinal couplings
when the inversion symmetry of the potential energies of the SQs is broken. We
study nonclassical-state generation in a SQ which is driven by a classical
field and c... | 1502.01175v3 |
2015-02-10 | Higher-derivative corrections to type II supergravity:Four Ramond-Ramond terms | It is known that the sphere-level S-matrix element of four type II
superstrings has one kinematic factor. At the low energy limit, this factor
produces the kinematic factor of the corresponding Feynman amplitudes in the
supergravity. It also produces higher-derivative couplings of four strings. In
this paper, we explic... | 1502.02853v1 |
2015-02-11 | $D^6 R^4$ amplitudes in various dimensions | Four-graviton couplings in the low energy effective action of type II string
vacua compactified on tori are strongly constrained by supersymmetry and
U-duality. While the $R^4$ and $D^4 R^4$ couplings are known exactly in terms
of Langlands-Eisenstein series of the U-duality group, the $D^6 R^4$ couplings
are not nearl... | 1502.03377v2 |
2015-02-12 | Pulse-controlled quantum gate sequences on a strongly coupled qubit chain | We propose a selective dynamical decoupling scheme on a chain of permanently
coupled qubits with XX type interactions, which is capable of dynamically
suppressing any coupling in the chain by applying sequences of local pulses to
the individual qubits. We demonstrate that high-fidelity single- and two-qubit
gates can b... | 1502.03665v2 |
2015-02-12 | Microwave-Induced Amplitude and Phase Tunable Qubit-Resonator Coupling in Circuit Quantum Electrodynamics | In the circuit quantum electrodynamics architecture, both the resonance
frequency and the coupling of superconducting qubits to microwave field modes
can be controlled via external electric and magnetic fields to explore qubit --
photon dynamics in a wide parameter range. Here, we experimentally demonstrate
and analyze... | 1502.03692v1 |
2015-02-13 | Antiferromagnet-Mediated Spin Transfer Between Metal and Ferromagnet | We develop a theory for spin transported by coherent Neel dynamics through an
antiferromagnetic insulator coupled to a ferromagnetic insulator on one side
and a current-carrying normal metal with strong spin-orbit coupling on the
other. The ferromagnet is considered within the mono-domain limit and we assume
its coupli... | 1502.04128v1 |
2015-02-17 | Harvesting Excitons Through Plasmonic Strong Coupling | Exciton harvesting is demonstrated in an ensemble of quantum emitters coupled
to localized surface plasmons. When the interaction between emitters and the
dipole mode of a metallic nanosphere reaches the strong coupling regime, the
exciton conductance is greatly increased. The spatial map of the conductance
matches the... | 1502.04905v2 |
2015-02-19 | Multipole surface plasmons in metallic nanohole arrays | The quasi-bound electromagnetic modes for the arrays of nanoholes perforated
in thin gold film are analyzed both numerically by the rigorous coupled wave
analysis (RCWA) method and semi-analytically by the coupled mode method. It is
shown that when the size of the nanohole occupies large portion of the unit
cell, the s... | 1502.05549v2 |
2015-02-23 | Dynamics of non-minimally coupled perfect fluids | We present a general formulation of the theory for a non-minimally coupled
perfect fluid in which both conformal and disformal couplings are present. We
discuss how such non-minimal coupling is compatible with the assumptions of a
perfect fluid and derive both the Einstein and the fluid equations for such
model. We fou... | 1502.06613v2 |
2015-02-24 | Charge Order from Orbital-dependent Coupling Evidenced by NbSe$_2$ | Niobium diselenide has long served as a prototype of two-dimensional charge
ordering, believed to arise from an instability of the electronic structure
analogous to the one-dimensional Peierls mechanism. Despite this, various
anomalous properties have recently been identified experimentally which cannot
be explained by... | 1502.06816v1 |
2015-02-25 | Spin-lattice order in one-dimensional conductors: beyond the RKKY effect | We investigate magnetic order in a lattice of classical spins coupled to an
isotropic gas of one-dimensional (1d) conduction electrons via local exchange
interactions. The frequently discussed Ruderman-Kittel-Kasuya-Yosida (RKKY)
effective exchange model for this system predicts that spiral order is always
preferred. H... | 1502.07362v1 |
2015-02-26 | Sensitivity of gravitational waves from preheating to a scalar field's interactions | After inflation, a period of preheating may have produced a stochastic
background of high frequency gravitational waves (GWs) that would persist until
today. The nature of the inflaton's coupling to Standard Model or other fields
is unknown, so it is useful to ask what features such fields may typically
have, and how t... | 1502.07660v2 |
2015-02-28 | Electron-spin to Phonon Coupling in Graphene Decorated with Heavy Adatoms | The naturally weak spin-orbit coupling in Graphene can be largely enhanced by
adatom deposition (e.g. Weeks et al. Phys. Rev. X 1, 021001 (2011)). However,
the dynamics of the adatoms also induces a coupling between phonons and the
electron spin. Using group theory and a tight-binding model, we systematically
investiga... | 1503.00092v1 |
2015-03-02 | The Kondo Temperature of a Two-dimensional Electron Gas with Rashba Spin-orbit Coupling | We use the Hirsch-Fye quantum Monte Carlo method to study the single magnetic
impurity problem in a two-dimensional electron gas with Rashba spin-orbit
coupling. We calculate the spin susceptibility for various values of spin-orbit
coupling, Hubbard interaction, and chemical potential. The Kondo temperatures
for differ... | 1503.00449v2 |
2015-03-03 | The running coupling of 8 flavors and 3 colors | We compute the renormalized running coupling of SU(3) gauge theory coupled to
N_f = 8 flavors of massless fundamental Dirac fermions. The recently proposed
finite volume gradient flow scheme is used. The calculations are performed at
several lattice spacings allowing for a controlled continuum extrapolation. The
result... | 1503.01132v2 |
2015-03-12 | General Microscopic Model of Magnetoelastic Coupling from First-Principles | Magnetoelastic coupling, i.e., the change of crystal lattice induced by a
spin order, is not only scientifically interesting, but also technically
important. In this work, we propose a general microscopic model from
first-principles calculations to describe the magnetoelastic coupling and
provide a way to construct the... | 1503.03565v1 |
2015-03-14 | Nonlinear All Optical Digital Amplification of the Light Pulse in Weakly Coupled Photonic Crystal Waveguides | All-optical amplification of the light pulse in a weakly coupled two
nonlinear photonic crystal waveguides (PCWs) is proposed. We consider
pillar-type PCWs, which consist of the periodically distributed circular rods
made from a Kerr-type dielectric material. Dispersion diagrams of the symmetric
and antisymmetric modes... | 1503.04336v1 |
2015-03-19 | On the importance of nonlinear couplings in large-scale neutrino streams | We propose a procedure to evaluate the impact of nonlinear couplings on the
evolution of massive neutrino streams in the context of large-scale structure
growth. Such streams can be described by general nonlinear conservation
equations, derived from a multiple-flow perspective, which generalize the
conservation equatio... | 1503.05707v2 |
2015-03-19 | Analytical Study of Quantum Feedback Enhanced Rabi Oscillations | We present an analytical solution of the single photon quantum feedback in a
cavity quantum electrodynamics system based on a half cavity set-up coupled to
a structured continuum. The exact analytical expression we obtain allows us to
discuss in detail under which conditions a single emitter-cavity system, which
is ini... | 1503.05722v1 |
2015-03-24 | Viscous Leptons in the Quark Gluon Plasma | We investigate the shear viscosity of leptons in a strongly coupled quark
gluon plasma (QGP). We find that the shear viscosity due to the lepton-quark
scattering is inversely proportional to the ratio of electric conductivity of
the QGP to temperature up to the leading logarithmic order of the
electromagnetic coupling.... | 1503.06967v3 |
2015-03-26 | Spectral engineering of coupled open-access microcavities | Open-access microcavities are emerging as a new approach to confine and
engineer light at mode volumes down to the $\lambda^3$ regime. They offer
direct access to a highly confined electromagnetic field while maintaining
tunability of the system and flexibility for coupling to a range of matter
systems. This article pr... | 1503.07687v2 |
2015-03-30 | Open quantum system description of singlet-triplet qubits in quantum dots | We develop a theoretical model to describe the dissipative dynamics of
singlet-triplet (S-T_0) qubits in GaAs quantum dots. Using the concurrence
experimentally obtained as a guide, we show that each logical qubit is coupled
to its own environment because the decoherence effect can be described by
independent dephasing... | 1503.08673v2 |
2015-04-07 | Ultrafast Optical Switching Using Photonic Molecules in Photonic Crystal Waveguides | We study the coupling between photonic molecules and waveguides in photonic
crystal slab structures using finite-difference time-domain method and coupled
mode theory. In a photonic molecule with two cavities, the coupling of cavity
modes results in two super-modes with symmetric and anti-symmetric field
distributions.... | 1504.01463v1 |
2015-04-08 | Accuracy of patch dynamics with mesoscale temporal coupling for efficient exascale simulation | Massive parallelisation has lead to a dramatic increase in available
computational power. However, data transfer speeds have failed to keep pace and
are the major limiting factor in the development of exascale computing. New
algorithms must be developed which minimise the transfer of data. Patch
dynamics is a computati... | 1504.01810v1 |
2015-04-08 | 2-dimensional hyperbolic medium for electrons and photons based on the array of tunnel-coupled graphene nanoribbons | We study the electronic band structure and optical conductivity of an array
of tunnel-coupled array of graphene nanoribbons. We show that due to the
coupling of electronic edge states for the zigzag nanoribbon structure, the
Fermi surface can become a hyperbola similarly to the case of the layered
metal-dielectric stru... | 1504.02130v2 |
2015-04-10 | Nonlinear neutrino-photon interactions inside strong laser pulses | Even though neutrinos are neutral particles and interact only via the
exchange of weak gauge bosons, charged leptons and quarks can mediate a
coupling to the photon field beyond tree level. Inside a relativistically
strong laser field nonlinear effects in the laser amplitude can play an
important role, as electrons and... | 1504.02722v1 |
2015-04-13 | On some fundamental misunderstandings in the indeterminate couple stress model. A comment on recent papers of A.R. Hadjesfandiari and G.F. Dargush | In a series of papers which are either published [A.R. Hadjesfandiari and
G.F. Dargush, Couple stress theory for solids, Int. J. Solids Struct. 48,
2496-2510, 2011; A.R. Hadjesfandiari and G.F. Dargush, Fundamental solutions
for isotropic size-dependent couple stress elasticity, Int. J. Solids Struct.
50, 1253-1265, 20... | 1504.03105v2 |
2015-04-14 | Inversed Vernier effect based single-mode laser emission in coupled microdisks | Recently, on-chip single-mode laser emission has attracted considerable
research attention due to its wide applications. While most of single-mode
lasers in coupled microdisks or microrings have been qualitatively explained by
either Vernier effect or inversed Vernier effect, none of them have been
experimentally confi... | 1504.03436v1 |
2015-04-16 | Spectral and structural stability properties of charged particle dynamics in coupled lattices | It has been realized in recent years that coupled focusing lattices in
accelerators and storage rings have significant advantages over conventional
uncoupled focusing lattices, especially for high-intensity charged particle
beams. A theoretical framework and associated tools for analyzing the spectral
and structural st... | 1504.04315v1 |
2015-04-22 | Anomalous Higgs-top Coupling Pollution on Triple Higgs Coupling Extraction at Future High-Luminosity Electron-Positron Collider | One of the most challenging tasks for future high-luminosity
electron-positron colliders is to extract Higgs triple coupling. It was
proposed that this can be carried out via the precisely measuring the cross
section of ZH associated production up to $0.4\%$. In this paper, we example
the possible heavy pollution from ... | 1504.05626v3 |
2015-04-22 | Inflationary models with non-minimally derivative coupling | We derive the general formulae for the the scalar and tensor spectral tilts
to the second order for the inflationary models with non-minimally derivative
coupling without taking the high friction limit. The non-minimally kinetic
coupling to Einstein tensor brings the energy scale in the inflationary models
down to be s... | 1504.05839v2 |
2015-04-23 | Entanglement between exciton and mechanical modes via dissipation-induced coupling | We analyze the entanglement between two matter modes in a hybrid quantum
system consists of a microcavity, a quantum well, and a mechanical oscillator.
Although the exciton mode in the quantum well and the mechanical oscillator are
initially uncoupled, their interaction through the microcavity field results in
an indir... | 1504.06318v3 |
2015-04-27 | New Reversal Mode in Exchange Coupled Antiferromagnetic/Ferromagnetic Disks: Distorted Viscous Vortex | Magnetic vortices have generated intense interest in recent years due to
their unique reversal mechanisms, fascinating topological properties, and
exciting potential applications. Additionally, the exchange coupling of
magnetic vortices to antiferromagnets has also been shown to lead to a range of
novel phenomena and f... | 1504.07121v1 |
2015-04-27 | Diagonal Form Factors and Heavy-Heavy-Light Three-Point Functions at Weak Coupling | In this paper we consider a special kind of three-point functions of HHL type
at weak coupling in N=4 SYM theory and analyze its volume dependence. At strong
coupling this kind of three-point functions were studied recently by Bajnok,
Janik and Wereszczynski [1]. The authors considered some cases of HHL
correlator in t... | 1504.07133v3 |
2015-04-28 | Steady-state thermodynamics of non-interacting transport beyond weak coupling | We investigate the thermodynamics of simple (non-interacting) transport
models beyond the scope of weak coupling. For a single fermionic or bosonic
level -- tunnel-coupled to two reservoirs -- exact expressions for the
stationary matter and energy current are derived from the solutions of the
Heisenberg equations of mo... | 1504.07412v2 |
2015-04-28 | Delayed feedback control of synchronization in weakly coupled oscillator networks | We study control of synchronization in weakly coupled oscillator networks by
using a phase reduction approach. Starting from a general class of limit cycle
oscillators we derive a phase model, which shows that delayed feedback control
changes effective coupling strengths and effective frequencies. We derive the
analyti... | 1504.07521v4 |
2015-05-05 | End-fire injection of guided light into optical microcavity | Coupling light into microdisk plays a key role in a number of applications
such as resonant filters and optical sensors. While several approaches have
successfully coupled light into microdisk efficiently, most of them suffer from
the ultrahigh sensitivity to the environmental vibration. Here we demonstrate a
robust me... | 1505.00858v1 |
2015-05-06 | Effects of large induced superconducting gap on semiconductor Majorana nanowires | With the recent achievement of extremely high-quality epitaxial interfaces
between InAs nanowires and superconducting Al shells with strong
superconductor-semiconductor tunnel coupling, a new regime of proximity-induced
superconductivity in semiconductors can be explored where the induced gap may
be similar in value to... | 1505.01482v2 |
2015-05-08 | Extreme multistability: Attractor manipulation and robustness | The coexistence of infinitely many attractors is called extreme
multistability in dynamical systems. In coupled systems, this phenomenon is
closely related to partial synchrony and characterized by the emergence of a
conserved quantity. We propose a general design of coupling that leads to
partial synchronization, whic... | 1505.02094v1 |
2015-05-08 | Transport through an impurity tunnel coupled to a Si/SiGe quantum dot | Achieving controllable coupling of dopants in silicon is crucial for
operating donor-based qubit devices, but it is difficult because of the small
size of donor-bound electron wavefunctions. Here we report the characterization
of a quantum dot coupled to a localized electronic state, and we present
evidence of controll... | 1505.02132v2 |
2015-05-14 | High-Q coupled resonances on a PhC waveguide using a tapered nanofiber with high coupling efficiency | We experimentally demonstrate high-Q cavity formation at an arbitrary
position on a silicon photonic crystal waveguide by bringing a tapered
nanofiber into contact with the surface of the slab. An ultrahigh Q of 5.1 x
10^5 is obtained with a coupling efficiency of 39%, whose resonant wavelength
can be finely tuned by 2... | 1505.03628v1 |
2015-05-14 | Cosmological Particle Production at Strong Coupling | We study the dynamics of a strongly-coupled quantum field theory in a
cosmological spacetime using the holographic AdS/CFT correspondence.
Specifically we consider a confining gauge theory in an expanding FRW universe
and track the evolution of the stress-energy tensor during a period of
expansion, varying the initial ... | 1505.03901v3 |
2015-05-16 | Dynamics of a macroscopic spin qubit in spin-orbit coupled Bose-Einstein condensates | We consider a macroscopic spin qubit based on spin-orbit coupled
Bose-Einstein condensates, where, in addition to the spin-orbit coupling, spin
dynamics strongly depends on the interaction between particles. The evolution
of the spin for freely expanding, trapped, and externally driven condensates is
investigated. For ... | 1505.04301v1 |
2015-05-17 | Non-minimal kinetic coupled gravity: inflation on the Warped DGP brane | We consider the non-minimally kinetic coupled version of DGP brane model,
where the kinetic term of the scalar field is coupled to the metric and
Einstein tensor on the brane by a coupling constant $\zeta$. We obtain the
corresponding field equations, using the Friedmann-Robertson-Walker metric and
the perfect fluid, a... | 1505.04390v3 |
2015-05-23 | Coupling Lemma and Its Application to The Security Analysis of Quantum Key Distribution | It is known that the coupling lemma provides a useful tool in the study of
probability theory and its related areas. It describes the relation between the
variational distance of two probability distributions and the probability that
outcomes from the two random experiments associated with each distribution are
not ide... | 1505.06269v1 |
2015-05-25 | Unitarity, Crossing Symmetry and Duality in the scattering of ${\cal N}=1$ Susy Matter Chern-Simons theories | We study the most general renormalizable ${\cal N}=1$ $U(N)$ Chern-Simons
gauge theory coupled to a single (generically massive) fundamental matter
multiplet. At leading order in the 't Hooft large $N$ limit we present
computations and conjectures for the $2 \times 2$ $S$ matrix in these theories;
our results apply at ... | 1505.06571v3 |
2015-06-01 | Effects of hidden nodes on network structure inference | Effects of hidden nodes on inference quality of observed network structure
are explored based on a disordered Ising model with hidden nodes. We first
study analytically small systems consisting of a few nodes, and find that the
magnitude of the effective coupling grows as the coupling strength from the
hidden common in... | 1506.00358v2 |
2015-06-12 | Single Top and Higgs Production in $e^- p$ collisions | In this proceedings some studies on the prospects of single top production at
the Large Hadron Electron Collider (LHeC) and double Higgs production at the
Future Circular Hadron Electron Collider (FCC-he) shall be presented. In
particular, we investigated the $tbW$ couplings via single top quark production
with the int... | 1506.03999v1 |
2015-06-11 | Disformal dark energy at colliders | Disformally coupled, light scalar fields arise in many of the theories of
dark energy and modified gravity that attempt to explain the accelerated
expansion of the universe. They have proved difficult to constrain with
precision tests of gravity because they do not give rise to fifth forces around
static non-relativist... | 1506.04057v1 |
2015-06-17 | A many body localization proximity effect | We examine what happens when a strongly many body localized system is coupled
to a weak heat bath, with both system and bath containing similar numbers of
degrees of freedom. Previous investigations of localized systems coupled to
baths operated in regimes where the back action of the system on the bath is
negligible, ... | 1506.05468v1 |
2015-06-22 | Non-perturbative selection rules in F-theory | We discuss the structure of charged matter couplings in 4-dimensional
F-theory compactifications. Charged matter is known to arise from M2-branes
wrapping fibral curves on an elliptic or genus-one fibration Y. If a set of
fibral curves satisfies a homological relation in the fibre homology, a
coupling involving the sta... | 1506.06764v2 |
2015-06-24 | Bounds on Higgs And Top Quark Masses From The Other Degenerate Vacua Near The Planck Scale With Gravitational Contributions | Based on the weak coupling expansion of gravity, we calculate the
gravitational contributions to yukawa coupling, scalar quartic coupling as well
as gauge couplings with general Landau-DeWitt gauge-fixing choice and a gauge
preserving (of SM gauge group) cut off regularization scheme. We find that the
results depend on... | 1506.07530v1 |
2015-06-28 | Ground state magnetic response of two coupled dodecahedra | The antiferromagnetic Heisenberg model on the dodecahedron possesses a number
of ground state magnetization discontinuities in a field at the classical and
quantum level, even though it lacks magnetic anisotropy. Here the model is
considered for two dodecahedra coupled antiferromagnetically along one of their
faces, as... | 1506.08446v2 |
2015-08-31 | Coupled-channels description of multinucleon transfer and fusion reactions at energies near and far below the Coulomb barrier | We investigate heavy-ion multinucleon transfer reactions using the
coupled-channels formalism. We first use the semi-classical approximation and
show that a direct coupling between the entrance and the pair transfer channels
improves a fit to the experimental one- and two-neutron transfer cross sections
for the 40Ca+96... | 1509.00080v3 |
2015-09-01 | A non-symmetric coupling of the finite volume method and the boundary element method | As model problem we consider the prototype for flow and transport of a
concentration in porous media in an interior domain and couple it with a
diffusion process in the corresponding unbounded exterior domain. To solve the
problem we develop a new non-symmetric coupling between the vertex-centered
finite volume and bou... | 1509.00440v1 |
2015-09-08 | Coupling Analysis Between Twitter and Call Centre | Social media has been contributing many research areas such as data mining,
recommender systems, time series analysis, etc. However, there are not many
successful applications regarding social media in government agencies. In fact,
lots of governments have social media accounts such as twitter and facebook.
More and mo... | 1509.02238v1 |
2015-09-09 | Benchmarking calculations of excitonic couplings between bacteriochlorophylls | Excitonic couplings between (bacterio)chlorophyll molecules are necessary for
simulating energy transport in photosynthetic complexes. Many techniques for
calculating the couplings are in use, from the simple (but inaccurate)
point-dipole approximation to fully quantum-chemical methods. We compared
several approximatio... | 1509.02772v1 |
2015-09-09 | Supersymmetric branes on curved spaces and fluxes | We discuss general supersymmetric brane configurations in flux backgrounds of
string and M-theory and derive a necessary condition for the worldvolume theory
to be supersymmetric on a given curved manifold. This condition resembles very
much the conditions found from coupling a supersymmetric field theory to
off-shell ... | 1509.02926v2 |
2015-09-11 | An exactly solvable model for a strongly spin-orbit-coupled nanowire quantum dot | In the presence of spin-orbit coupling, quantum models for semiconductor
materials are generally not exactly solvable. As a result, understanding of the
strong spin-orbit coupling effects in these systems remains poor. Here we
develop an analytical method to solve the one-dimensional hard-wall quantum dot
problem in th... | 1509.03402v1 |
2015-09-14 | Itinerant chiral ferromagnetism in a trapped Rashba spin-orbit coupled Fermi gas | How ferromagnetic phases emerge in itinerant systems is an outstanding
problem in quantum magnetism. Here we consider a repulsive two-component Fermi
gas confined in a two dimensional isotropic harmonic potential and subject to a
large Rashba spin-orbit (SO) coupling, whose single-particle dispersion can be
tailored by... | 1509.04095v1 |
2015-09-14 | Strongly enhanced superconductivity in coupled t-J segments | The $t\!\!-\!\!J$ Hamiltonian is one of the cornerstones in the theoretical
study of strongly correlated copper-oxide based materials. Using the density
matrix renormalization group method we calculate the phase diagram of the
one-dimensional (1D) $t\!\!-\!\!J$ chain in the presence of a periodic hopping
modulation, as... | 1509.04117v1 |
2015-09-17 | Extraordinary Photon Transport by Near-Field Coupling of a Nanostructured Metamaterial with a Graphene-Covered Plate | Coupled surface plasmon/phonon polaritons and hyperbolic modes are known to
enhance radiative transport across nanometer vacuum gaps but usually require
identical materials. It becomes crucial to achieve strong near-field energy
transfer between dissimilar materials for applications like near-field
thermophotovoltaic a... | 1509.05399v1 |
2015-09-18 | Perturbative treatment of inter-site couplings in the local description of open quantum networks | The problem of construction of a quantum master equation for a system of
sites weakly coupled to each other and to one or more reservoirs (open quantum
network) is considered. Microscopic derivation of a quantum master equation
requires a diagonalization of the Hamiltonian of the network, which can be a
difficult task.... | 1509.05754v1 |
2015-09-21 | Testing an Inflation Model with Nonminimal Derivative Coupling in the Light of PLANCK 2015 Data | We study the dynamics of a generalized inflationary model in which both the
scalar field and its derivatives are coupled to the gravity. We consider a
general form of the nonminimal derivative coupling in order to have a complete
treatment of the model. By expanding the action up to the second order in
perturbation, we... | 1509.06240v1 |
2015-09-30 | Experimental Study of Synchronization of Coupled Electrical Self-Oscillators and Comparison to the Sakaguchi-Kuramoto model | We explore the collective phase dynamics of Wien-bridge oscillators coupled
resistively. We carefully analyze the behavior of two coupled oscillators,
obtaining a transformation from voltage to effective phase. From the phase
dynamics we show that the coupling can be quantitatively described by
Sakaguchi's modification... | 1510.00034v2 |
2015-10-06 | Multiple resonance and anti-resonance in coupled Duffing oscillators | We investigate the resonance behaviour in a system composed by n-coupled
Duffing oscillators where only the first oscillator is driven by a periodic
force, assuming a nearest neighbour coupling. We have derived the
frequency-response equations for a system composed of two-coupled oscillators
by using a theoretical appr... | 1510.01564v1 |
2015-10-05 | Disformally coupled inflation | A disformal coupling between two scalar fields is considered in the context
of cosmological inflation. The coupling introduces novel derivative
interactions mixing the kinetic terms of the fields but without introducing
superluminal or unstable propagation of the two scalar fluctuation modes.
Though the typical effect ... | 1510.01650v2 |
2015-10-08 | Quantum corrected power spectra of massless minimally coupled scalars during inflation: Effects of Yukawa coupling versus quartic self-interaction | We, in the first part, contemplate a massless minimally coupled scalar which
is Yukawa-coupled to a massless Dirac fermion in a locally de Sitter background
of an inflating spacetime. We compute the scalar's quantum corrected mode
function, power spectrum, spectral index and the running of the spectral index
at one-loo... | 1510.02272v1 |
2015-10-12 | Low-energy signals of strongly-coupled electroweak symmetry-breaking scenarios | The non-observation of new particles at the LHC suggests the existence of a
mass gap above the electroweak scale. This situation is adequately described
through a general electroweak effective theory with the established fields and
Standard Model symmetries. Its couplings contain all information about the
unknown short... | 1510.03114v2 |
2015-10-13 | Non-minimal coupling in Higgs-Yukawa model with asymptotically safe gravity | We study the fixed point structure of the Higgs-Yukawa model, with its scalar
being non-minimally coupled to the asymptotically safe gravity, using the
functional renormalization group. We have obtained the renormalization group
equations for the cosmological and Newton constants, the scalar mass-squared
and quartic co... | 1510.03734v5 |
2015-10-13 | Interacting spin-orbit-coupled spin-1 Bose-Einstein condensates | The recent experimental realization of spin-orbit (SO) coupling for spin-1
ultracold atoms opens an interesting avenue for exploring SO-coupling-related
physics in large-spin systems, which is generally unattainable in electronic
materials. In this paper, we study the effects of interactions between atoms on
the ground... | 1510.03787v3 |
2015-10-27 | Extrinsic Spin Hall Effect from Anisotropic Rashba Spin-Orbit Coupling in Graphene | We study the effect of anisotropy of the Rashba coupling on the extrinsic
spin Hall effect due to spin-orbit active adatoms on graphene. In addition to
the intrinsic spin-orbit coupling, a generalized anisotropic Rashba coupling
arising from the breakdown of both mirror and hexagonal symmetries of pristine
graphene is ... | 1510.07771v1 |
2015-10-27 | Polaritonic states in a dielectric nanoguide: localization and strong coupling | Propagation of light through dielectrics lies at the heart of optics.
However, this ubiquitous process is commonly described using phenomenological
dielectric function $\varepsilon$ and magnetic permeability $\mu$, i.e. without
addressing the quantum graininess of the dielectric matter. Here, we present a
theoretical s... | 1510.07979v2 |
2015-10-28 | Magnetic Impurity in a Tonks Gas of Fermions | In this letter we consider a magnetic impurity in a one-dimensional
spin-$1/2$ Fermi gas with infinitely strong repulsive interaction between
fermions. We rigorously prove that, independent of whether the magnetic
coupling between impurity and fermions is ferromagnetic or anti-ferromagnetic,
the ground state is always ... | 1510.08303v2 |
2015-10-30 | Fragility of reaction-diffusion models to competing advective processes | We study the coupling of a Fisher-Kolmogorov-Petrovsky-Piskunov (FKPP)
equation to a separate, advection-only transport process. We find that the
front dynamics can be described by an FKPP-like equation only at sufficiently
fast diffusion or large coupling strength. For such parameter regimes, we find
a mapping to an e... | 1510.08987v7 |
2015-11-04 | Induced Gravity I: Real Scalar Field | We show that classically scale invariant gravity coupled to a single scalar
field can undergo dimensional transmutation and generate an effective
Einstein-Hilbert action for gravity, coupled to a massive dilaton. The same
theory has an ultraviolet fixed point for coupling constant ratios such that
all couplings are asy... | 1511.01481v3 |
2015-11-06 | Black hole entropy arising from massless scalar field with Lorentz violation induced by the coupling to Einstein tensor | We have investigated quantum entropy of a static black hole arising from the
massless scalar field with Lorentz violation induced by the coupling to
Einstein tensor. Our results show that the coupled massless scalar field
contributes to the classical Bekenstein-Hawking term in the black hole entropy.
The corrected clas... | 1511.02004v2 |
2015-11-06 | Signatures of Vibrational Strong Coupling in Raman Scattering | In this Letter we analyze theoretically how the emergence of collective
strong coupling between vibrational excitations and confined cavity modes
affects Raman scattering processes. This work is motivated by recent
experiments [Shalabney et al., Angew. Chemie 54, 7971 (2015)], which reported
enhancements of up to three... | 1511.02115v1 |
2015-11-11 | Fermions embedded in a scalar-vector kink-like smooth potential | The behaviour of massive fermions is analyzed with scalar and vector
potentials. A continuous chiral-conjugation transformation decouples the
equation for the upper component of the Dirac spinor provided the vector
coupling does not exceed the scalar coupling. It is shown that a
Sturm-Liouville perspective is convenien... | 1511.03455v1 |
2015-11-11 | Cavity magnomechanics | A dielectric body couples with electromagnetic fields through radiation
pressure and electrostrictive forces, which mediate phonon-photon coupling in
cavity optomechanics. In a magnetic medium, according to Korteweg-Helmholtz
formula, magnetostrictive forces should arise and lead to phonon-magnon
interaction. Here we r... | 1511.03680v2 |
2015-11-12 | Composite resonances and their impact on the EW chiral Lagrangian | In this talk we study the low-energy effective couplings generated by
strongly-coupled electroweak models that contain heavy composite resonances.
Invariance under $SU(2)_L\times SU(2)_R$ is a key ingredient in the
construction of the resonance action. For simplicity, in these proceedings we
focus our attention on the ... | 1511.03892v1 |
2015-11-16 | Synchronization of coupled stick-slip oscillators | A rationale is provided for the emergence of synchronization in a system of
coupled oscillators in a stick-slip motion. The single oscillator has a limit
cycle in a region of the state space for each parameter set beyond the
supercritical Hopf bifurcation. The two-oscillator system that has similar
weakly coupled oscil... | 1511.04791v1 |
2015-11-17 | Synchronization of phase oscillators with frequency-weighted coupling | Recently, the first-order synchronization transition has been studied in
systems of coupled phase oscillators. In this paper, we propose a framework to
investigate the synchronization in the frequency-weighted Kuramoto model with
all-to-all couplings. A rigorous mean-field analysis is implemented to predict
the possibl... | 1511.05394v1 |
2015-11-15 | Synchronization of two memristive coupled van der Pol oscillators | The objective of this paper is to explore the possibility to couple two van
der Pol (vdP) oscillators via a resistance-capacitance (RC) network comprising
a Ag-TiOx-Al memristive device. The coupling was mediated by connecting the
gate terminals of two programmable unijunction transistors (PUTs) through the
network. In... | 1511.06363v1 |
2015-11-23 | Different kinds of chimera death states in nonlocally coupled oscillators | We investigate the significance of nonisochronicity parameter in a network of
nonlocally coupled Stuart-Landau oscillators with symmetry breaking form. We
observe that the presence of nonisochronicity parameter leads to structural
changes in the chimera death region while varying the strength of the
interaction. This g... | 1511.07220v2 |
2015-11-23 | What $ξ$? Cosmological constraints on the non-minimal coupling constant | In dynamical system describing evolution of universe with the flat
Friedmann-Robertson-Walker symmetry filled with barotropic dust matter and
non-minimally coupled scalar field with a constant potential function an
invariant manifold of the de Sitter state is used to obtain exact solutions of
the reduced dynamics. Usin... | 1511.08736v2 |
2016-01-04 | Stability and convergence analysis of the kinematically coupled scheme and its extensions for the fluid-structure interaction | In this work we analyze the stability and convergence properties of a
loosely-coupled scheme, called the kinematically coupled scheme, and its
extensions for the interaction between an incompressible, viscous fluid and a
thin, elastic structure. We consider a benchmark problem where the structure is
modeled using a gen... | 1601.00664v2 |
2016-01-04 | Correlated Coulomb drag in capacitively coupled quantum-dot structures | We study theoretically Coulomb drag in capacitively coupled quantum dots
(CQDs) -- a biasdriven dot coupled to an unbiased dot where transport is due to
Coulomb mediated energy transfer drag. To this end, we introduce a
master-equation approach which accounts for higher-order tunneling
(cotunneling) processes as well a... | 1601.00673v3 |
2016-01-07 | PT Symmetry Breaking and Nonlinear Optical Isolation in Coupled Microcavities | We perform a theoretical study of nonlinear optical isolator devices based on
coupled microcavities with gain and loss. Using coupled-mode theory, we derive
a correspondence between the boundary of asymptotic stability in the nonlinear
regime, where gain saturation is present, and the PT-breaking transition in the
unde... | 1601.01375v3 |
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