publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2013-09-16 | Tuning the Competition between Ferromagnetism and Antiferromagnetism in a Half-doped Manganite through Magnetoelectric Coupling | We investigate the possibility of controlling the magnetic phase transition
of the heterointerface between a half-doped manganite
La$_{0.5}$Ca$_{0.5}$MnO$_{3}$ and a multiferroic BiFeO$_{3}$ through
magnetoelectric coupling. Using macroscopic magnetometry and element-selective
x-ray magnetic circular dichroism at the M... | 1309.4121v1 |
2013-09-18 | Strong-coupling approach to antiferromagnetic ordering driven by paramagnetic pair-breaking in d-wave superconducting phase | The field-induced antiferromagnetic (AFM) ordering in the
$d_{x^2-y^2}$-paired superconducting phase, which has been recently found in
the weak-coupling approach as a basic mechanism due to the Pauli paramagnetic
pair-breaking (PPB) in relation to the high-field behaviors in CeCoIn_5, is
studied in the strong-coupling ... | 1309.4609v3 |
2014-05-04 | Decoherence of a quantum system coupled to an XY spin chain: Role of the initial state of the spin chain | We study the decoherence of a coupled quantum system consisting of a central
spin and its correlated environment described by a general $XY$ spin-chain
model. We make it clear that the evolution of the coherence factor sensitively
depends on the initial states of the environment spin-chain. Specially, the
dynamical evo... | 1405.0635v1 |
2014-05-05 | Cavity polariton optomechanics: Polariton path to fully resonant dispersive coupling in optomechanical resonators | Resonant photoelastic coupling in semiconductor nanostructures opens new
perspectives for strongly enhanced light-sound interaction in optomechanical
resonators. One potential problem, however, is the reduction of the cavity
Q-factor induced by dissipation when the resonance is approached. We show in
this letter that c... | 1405.0886v1 |
2014-05-05 | Minding the Gap in Holographic Models of Interacting Fermions | We study the holographic dual of fermions interacting in a
Schwarzschild-AdS$_{d+1}$ background via a dipole (Pauli) coupling sourced by a
probe gauge field. We find quite generally that a gap forms in the dual
operator spectrum as the Pauli coupling is strengthened. Previous
investigations have observed this behavior ... | 1405.1041v1 |
2014-05-07 | Strong coupling between surface plasmon polaritons and emitters | In this review we look at the concepts and state-of-the-art concerning the
strong coupling of surface plasmon-polariton modes to states associated with
quantum emitters such as excitons in J-aggregates, dye molecules and quantum
dots. We explore the phenomenon of strong coupling with reference to a number
of examples i... | 1405.1661v1 |
2014-05-07 | Single polaron properties for double-well electron-phonon coupling | We show that in crystals where light ions are symmetrically intercalated
between heavy ions, the electron-phonon coupling for carriers located at the
light sites cannot be described by a Holstein model. We introduce the
double-well electron-phonon coupling model to describe the most interesting
parameter regime in such... | 1405.1774v1 |
2014-05-08 | Tunable and Switchable Coupling Between Two Superconducting Resonators | We realize a device allowing for tunable and switchable coupling between two
superconducting resonators mediated by an artificial atom. For the latter, we
utilize a persistent current flux qubit. We characterize the tunable and
switchable coupling in frequency and time domain and find that the coupling
between the rele... | 1405.1969v2 |
2014-05-09 | Magnetization dynamics and damping due to electron-phonon scattering in a ferrimagnetic exchange model | We present a microscopic calculation of magnetization damping for a magnetic
"toy model." The magnetic system consists of itinerant carriers coupled
antiferromagnetically to a dispersionless band of localized spins, and the
magnetization damping is due to coupling of the itinerant carriers to a phonon
bath in the prese... | 1405.2347v1 |
2014-05-14 | Enhanced interaction between a mechanical oscillator and two coupled resonant electrical circuits | This paper reports result of calculation and experimental realization of an
electromechanical system that consists of a high-Q mechanical oscillator
parametrically coupled in the manner of a capacitive transducer with a RF
circuit, which is in turn inductively coupled with another RF circuit. The
system operates in the... | 1405.3645v2 |
2014-05-15 | Reducing error rates in straintronic multiferroic dipole-coupled nanomagnetic logic by pulse shaping | Dipole-coupled nanomagnetic logic (NML), where nanomagnets with bistable
magnetization states act as binary switches and information is transferred
between them via dipole coupling and Bennett clocking, is a potential
replacement for conventional transistor logic since magnets dissipate less
energy than transistors whe... | 1405.4000v1 |
2014-05-18 | Ultracold Spin-Orbit Coupled Bose-Einstein Condensate in a Cavity: Route to Magnetic Phases Through Cavity Transmission | We study the spin orbit coupled ultra cold Bose-Einstein condensate placed in
a single mode Fabry-P\'erot cavity. The cavity introduces a quantum optical
lattice potential which dynamically couples with the atomic degrees of freedom
and realizes a generalized extended Bose Hubbard model whose zero temperature
phase dia... | 1405.4500v1 |
2014-04-08 | Coupled Item-based Matrix Factorization | The essence of the challenges cold start and sparsity in Recommender Systems
(RS) is that the extant techniques, such as Collaborative Filtering (CF) and
Matrix Factorization (MF), mainly rely on the user-item rating matrix, which
sometimes is not informative enough for predicting recommendations. To solve
these challe... | 1405.6223v1 |
2014-06-02 | Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended SM | We improve the sphaleron decoupling condition in the real singlet-extended
standard model. The sphaleron energy is obtained using the finite temperature
one-loop effective potential with daisy resummation. For moderate values of the
model parameters, the sphaleron decoupling condition is found to be
$v_C/T_C>(1.1-1.2)$... | 1406.0433v2 |
2014-06-02 | On the observability of coupled dark energy with cosmic voids | Taking N-body simulations with volumes and particle densities tuned to match
the SDSS DR7 spectroscopic main sample, we assess the ability of current void
catalogs (e.g., Sutter et al. 2012b) to distinguish a model of coupled dark
matter-dark energy from {\Lambda}CDM cosmology using properties of cosmic
voids. Identify... | 1406.0511v2 |
2014-06-05 | Emergence of decoupled surface transport channels in bulk insulating Bi2Se3 thin films | In ideal topological insulator (TI) films the bulk state, which is supposed
to be insulating, should not provide any electric coupling between the two
metallic surfaces. However, transport studies on existing TI films show that
the topological states on opposite surfaces are electrically tied to each other
at thickness... | 1406.1252v1 |
2014-06-08 | Storage and on-demand release of microwaves using superconducting resonators with tunable coupling | We present a system which allows to tune the coupling between a
superconducting resonator and a transmission line. This storage resonator is
addressed through a second, coupling resonator, which is frequency-tunable and
controlled by a magnetic flux applied to a superconducting quantum interference
device (SQUID). We e... | 1406.2005v1 |
2014-06-10 | Weak Localization, Spin Relaxation, and Spin-Diffusion: The Crossover Between Weak and Strong Rashba Coupling Limits | Disorder scattering and spin-orbit coupling are together responsible for the
diffusion and relaxation of spin-density in time-reversal invariant systems. We
study spin-relaxation and diffusion in a two-dimensional electron gas with
Rashba spin-orbit coupling and spin-independent disorder, focusing on the role
of Rashba... | 1406.2715v2 |
2014-06-16 | Cosmic microwave background constraints on coupled dark matter | We study CMB constraints on a model with a cosmological constant and a
fraction of dark matter non-minimally coupled to a massless scalar field. In
this scenario, there is an extra gravity-like fifth force which can affect the
evolution of the Universe enough to have a discernible effect on measurements
of cosmological... | 1406.4145v2 |
2014-06-18 | Strong light-matter coupling in two-dimensional atomic crystals | Two dimensional (2D) atomic crystals of graphene, and transition metal
dichalcogenides have emerged as a class of materials that show strong
light-matter interaction. This interaction can be further controlled by
embedding such materials into optical microcavities. When the interaction is
engineered to be stronger than... | 1406.4826v1 |
2014-06-18 | Cornering Scalar Leptoquarks at LHC | We study implications of large lepton-quark-leptoquark couplings for direct
leptoquark searches at Large Hadron Collider. We present all existing flavor
constraints on the strength of these couplings assuming that leptoquarks under
consideration interact exclusively with charged leptons and quarks of the same
generatio... | 1406.4831v2 |
2014-06-19 | A criterion of the non-existence of surface states in a semi-infinite crystal | An infinite crystal can be constructed by an infinite number of parallel
two-dimensional (hkl) crystal planes coupled to each other. For crystals with
negligible spin-orbit coupling, we report a rigorous proof of a criterion on
the non-existence of surface states in a semi-infinite crystal with the crystal
symmetry. Th... | 1406.5010v2 |
2014-06-22 | The observational position of simple non-minimally coupled inflationary scenarios | We consider two classes of non-minimally coupled inflation models; those with
a quadratic coupling of the inflaton to gravity, and the `Universal Attractor'
models where the coupling is connected to the potential. We make a detailed
analysis of the attractor structure in the latter case, identifying a shift of
the attr... | 1406.5768v3 |
2014-06-27 | Competing Valence Bond States of Spin-3/2 Fermions on a Strongly Coupled Ladder | We study the possible ground state configurations of two strongly coupled
chains of charge neutral spin-3/2 fermionic atoms interacting via short range
van der Waals interaction. The coupling between the two chains is realized by
relatively large hopping amplitude. Exploiting that such a ladder configuration
can be map... | 1406.7087v2 |
2014-06-28 | Cooling mechanical resonators to quantum ground state from room temperature | Ground-state cooling of mesoscopic mechanical resonators is a fundamental
requirement for test of quantum theory and for implementation of quantum
information. We analyze the cavity optomechanical cooling limits in the
intermediate coupling regime, where the light-enhanced optomechanical coupling
strength is comparable... | 1406.7359v1 |
2014-06-30 | Nanophotonic control of circular dipole emission: toward a scalable solid-state to flying-qubits interface | Controlling photon emission by single quantum emitters with nanostructures is
crucial for scalable on-chip quantum information processing. Nowadays
nanoresonators can affect the lifetime of emitters and ultimately induce strong
coupling between the emitters and the light field, while nanoantennas can
control the direct... | 1406.7741v2 |
2016-04-30 | Seiberg-Witten monopoles: Weyl metal coupled to chiral magnets | We study a Weyl (semi)metal which couples to local magnets. In the continuum
limit, the Hamiltonian of the system matches the Chern-Simons-Maxwell-Dirac
functional and then the ground state is governed by generalized Seiberg-Witten
(SW) or Freund equations in terms of the sign of Dzyaloshinskii-Moriya
coupling. The gro... | 1605.00093v2 |
2016-05-11 | Massive higher spin fields in curved spacetime and necessity of non-minimal couplings | Free massive higher spin fields in weak background gravitational fields are
discussed. Contrary to the spin one case, higher spin fields should have
nontrivial non-minimal couplings to the curvature. A precise analysis is given
for the spin 2 case, and it is shown that two conditions should be satisfied
among five non-... | 1605.03363v3 |
2016-05-13 | Constraining the top-Higgs sector of the Standard Model Effective Field Theory | Working in the framework of the Standard Model Effective Field Theory, we
study chirality-flipping couplings of the top quark to Higgs and gauge bosons.
We discuss in detail the renormalization group evolution to lower energies and
investigate direct and indirect contributions to high- and low-energy
CP-conserving and ... | 1605.04311v2 |
2016-05-16 | Conformal Phase Diagram of Complete Asymptotically Free Theories | We investigate the ultraviolet and infrared fixed point structure of
gauge-Yukawa theories featuring a single gauge coupling, Yukawa coupling and
scalar self coupling. Our investigations are performed using the two loop gauge
beta function, one loop Yukawa beta function and one loop scalar beta function.
We provide the... | 1605.04712v1 |
2016-05-18 | Collective Strong Coupling with Homogeneous Rabi Frequencies using a 3D Lumped Element Microwave Resonator | We design and implement 3D lumped element microwave cavities for the coherent
and uniform coupling to electron spins hosted by nitrogen vacancy centers in
diamond. Our design spatially focuses the magnetic field to a small mode
volume. We achieve large homogeneous single spin coupling rates, with an
enhancement of the ... | 1605.05554v1 |
2016-05-21 | Molecular shear heating and vortex dynamics in thermostatted two-dimensional Yukawa liquids | It is well known that two-dimensional macroscale shear flows are susceptible
to instabilities leading to macroscale vortical structures. The linear and
nonlinear fate of such a macroscale flow in a strongly coupled medium is a
fundamental problem. A popular example of a strongly coupled medium is a dusty
plasma, often ... | 1605.06614v1 |
2016-05-23 | An adaptive non-symmetric finite volume and boundary element coupling method for a fluid mechanics interface problem | We consider an interface problem often arising in transport problems: a
coupled system of partial differential equations with one (elliptic) transport
equation on a bounded domain and one equation (in this case the Laplace
problem) on the complement, an unbounded domain. Based on the non-symmetric
coupling of the finit... | 1605.07031v1 |
2016-05-25 | Correlated disorder in the Kuramoto model: Effects on phase coherence, finite-size scaling, and dynamic fluctuations | We consider a mean-field model of coupled phase oscillators with quenched
disorder in the natural frequencies and coupling strengths. A fraction $p$ of
oscillators are positively coupled, attracting all others, while the remaining
fraction $1-p$ are negatively coupled, repelling all others. The frequencies
and coupling... | 1605.07933v1 |
2016-05-26 | Existence of Ground State Eigenvalues for the Spin-Boson Model with Critical Infrared Divergence and Multiscale Analysis | A two-level atom coupled to the radiation field is studied. First principles
in physics suggest that the coupling function, representing the interaction
between the atom and the radiation field, behaves like $\vert k \vert^{- 1/2}$,
as the photon momentum k tends to zero. Previous results on non-existence of
ground sta... | 1605.08348v1 |
2016-05-26 | Coherent and Incoherent Coupling Dynamics between Neutral and Charged Excitons in Monolayer MoSe2 | The optical properties of semiconducting transition metal dichalcogenides are
dominated by both neutral excitons (electron-hole pairs) and charged excitons
(trions) that are stable even at room temperature. While trions directly
influence charge transport properties in optoelectronic devices, excitons may
be relevant t... | 1605.08480v1 |
2016-05-27 | Testing the dark matter scenario in the inert doublet model by future precision measurements of the Higgs boson couplings | We evaluate radiative corrections to the Higgs boson couplings in the inert
doublet model, in which the lightest component of the $Z_2^{}$ odd scalar
doublet field can be a dark matter candidate. The one-loop contributions to the
$hVV$, $hff$ and $hhh$ couplings are calculated in the on-shell scheme, where
$h$ is the H... | 1605.08520v1 |
2016-05-27 | Combined Brillouin light scattering and microwave absorption study of magnon-photon coupling in a split-ring resonator/YIG film system | Microfocused Brillouin light scattering (BLS) and microwave absorption (MA)
are used to study magnon-photon coupling in a system consisting of a split-ring
microwave resonator and a yttrium iron garnet (YIG) film. The split-ring
resonantor is defined by optical lithography and loaded with a 1 $\mu$m-thick
YIG film grow... | 1605.08531v1 |
2016-05-30 | Chaos in generically coupled phase oscillator networks with nonpairwise interactions | The Kuramoto-Sakaguchi system of coupled phase oscillators, where interaction
between oscillators is determined by a single harmonic of phase differences of
pairs of oscillators, has very simple emergent dynamics in the case of
identical oscillators that are globally coupled: there is a variational
structure that means... | 1605.09297v2 |
2016-05-30 | Spin Josephson effects in Exchange coupled Anti-ferromagnets | The energy of exchange coupled antiferromagnetic insulators (AFMIs) is a
periodic function of the relative in-plane orientation of the N\'{e}el vector
fields. We show that this leads to oscillations in the relative magnetization
of exchange coupled AFMIs separated by a thin metallic barrier. These
oscillations pump a s... | 1605.09427v1 |
2016-07-31 | The twofold diabatization of the KRb $(1\sim 2)^1Π$ complex in the framework of \emph{ab initio} and deperturbation approaches | We performed a diabatization of the mutually perturbed $1^1\Pi$ and $2^1\Pi$
states of KRb based on both electronic structure calculation and direct
coupled-channel deperturbation analysis of experimental energies. The potential
energy curves (PECs) of the diabatic states and their scalar coupling were
constructed from... | 1608.00225v1 |
2016-08-05 | CP asymmetry in heavy Majorana neutrino decays at finite temperature: the hierarchical case | We consider the simplest realization of leptogenesis with one heavy Majorana
neutrino species much lighter than the other ones. In this scenario, when the
temperature of the early universe is smaller than the lightest Majorana
neutrino mass, we compute at first order in the Standard Model couplings and,
for each coupli... | 1608.01979v1 |
2016-07-20 | Stochastic Bifurcations in the Nonlinear Parallel Ising Model | We investigate the phase transitions of a nonlinear, parallel version of the
Ising model, characterized by an antiferromagnetic linear coupling and
ferromagnetic nonlinear one. This model arises in problems of opinion
formation. The mean-field approximation shows chaotic oscillations, by changing
the couplings or the c... | 1608.02471v2 |
2016-08-15 | Constraining the Higgs couplings to up and down quarks using production kinematics at the CERN Large Hadron Collider | We study the prospects for constraining the Higgs boson's couplings to up and
down quarks using kinematic distributions in Higgs production at the CERN Large
Hadron Collider. We find that the Higgs $p_T$ distribution can be used to
constrain these couplings with precision competitive to other proposed
techniques. With ... | 1608.04376v1 |
2016-08-22 | Charge and orbital order due to cooperative Jahn-Teller effect in manganite chains | We derive an effective Hamiltonian that takes into account the quantum nature
of phonons and models cooperative Jahn-Teller effect in the adiabatic regime
and at strong electron-phonon coupling in one dimension. Our approach involves
mapping a strong-coupling problem to a weak-coupling one by using a duality
transforma... | 1608.06055v1 |
2016-08-23 | Kinetic Mixing at Strong Coupling | A common feature of many string-motivated particle physics models is
additional strongly coupled U(1)'s. In such sectors, electric and magnetic
states have comparable mass, and integrating out modes also charged under U(1)
hypercharge generically yields CP preserving electric kinetic mixing and CP
violating magnetic ki... | 1608.06635v2 |
2016-08-25 | Cosmological constraints on coupled dark energy | The coupled dark energy model provides a possible approach to mitigate the
coincidence problem of cosmological standard model. Here, the coupling term is
assumed as $\bar{Q}=3H\xi_x\bar{\rho}_x$, which is related to the interaction
rate and energy density of dark energy. We derive the background and
perturbation evolut... | 1608.07039v2 |
2016-08-28 | Theory of quantum dissipation in a class of non-Gaussian environments | In this work we construct a novel dissipaton-equation-of-motion (DEOM) theory
in quadratic bath coupling environment, based an extended algebraic statistical
quasi-particle approach. To validate the new ingredient of the underlying
dissipaton algebra, we derive an extended Zusman equation via a totally
different approa... | 1608.07774v3 |
2017-06-07 | Unification of gauge and Yukawa couplings | The unification of gauge and top Yukawa couplings is an attractive feature of
gauge-Higgs unification models in extra-dimensions. This feature is usually
considered difficult to obtain based on simple group theory analyses. We
reconsider a minimal toy model including the renormalisation group running at
one loop. Our r... | 1706.02313v2 |
2017-06-07 | Coupled Mode Theory of Microtoroidal Resonators with a One-dimensional Waveguide | We study the transmission of light through a system consisting of an
arbitrary number $N$ of microtoroidal resonators coupled to a one-dimensional
(1D) waveguide. The transmission $T$ through such a system and its full-width
at half-maximum (FWHM) are calculated for various values of $N$ and mutual-mode
coupling coeffi... | 1706.02392v1 |
2017-06-16 | Efficient Electronic Structure Theory via Hierarchical Scale-Adaptive Coupled-Cluster Formalism: I. Theory and Computational Complexity Analysis | A novel reduced-scaling, general-order coupled-cluster approach is formulated
by exploiting hierarchical representations of many-body tensors, combined with
the recently suggested formalism of scale-adaptive tensor algebra. Inspired by
the hierarchical techniques from the renormalization group approach,
H/H2-matrix alg... | 1706.05396v1 |
2017-06-21 | Stochastic Coupled Cluster Theory: Efficient Sampling of the Coupled Cluster Expansion | We consider the sampling of the coupled cluster expansion within stochastic
coupled cluster theory. Observing the limitations of previous approaches due to
the inherently non-linear behaviour of a coupled cluster wavefunction
representation we propose new approaches based upon an intuitive, well-defined
condition for s... | 1706.07017v3 |
2017-06-23 | Boundary driven Heisenberg-chain in the long-range interacting regime: Robustness against far from equilibrium effects | We investigate the Heisenberg XXZ-chain with long-range interactions in the
Z-dimension. By applying two magnetic boundary reservoirs we drive the system
out of equilibrium and induce a non-zero steady state current. The long-range
coupled chain shows nearly ballistic transport and linear response for all
potential dif... | 1706.07744v2 |
2017-06-28 | Electric control of the edge magnetization in zigzag stanene nanoribbon | There has been tremendous interest in manipulating electron and hole-spin
states in low-dimensional structures for electronic and spintronic
applications. We study the edge magnetic coupling and anisotropy in zigzag
stanene nanoribbons, by first-principles calculations. Taking into account
considerable spin-orbit coupl... | 1706.09098v1 |
2017-06-28 | Time reversal of a discrete system coupled to a continuum based on non-Hermitian flip | Time reversal in quantum or classical systems described by an Hermitian
Hamiltonian is a physically allowed process, which requires in principle
inverting the sign of the Hamiltonian. Here we consider the problem of time
reversal of a subsystem of discrete states coupled to an external environment
characterized by a co... | 1706.09128v1 |
2017-10-02 | High Controllable and Robust 2D Spin-Orbit Coupling for Quantum Gases | We report the realization of a robust and highly controllable two-dimensional
(2D) spin-orbit (SO) coupling with topological non-trivial band structure. By
applying a retro-reflected 2D optical lattice, phase tunable Raman couplings
are formed into the anti-symmetric Raman lattice structure, and generate the 2D
SO coup... | 1710.00717v3 |
2017-10-05 | Magnetic Skyrmionic Polarons | We study a two-dimensional electron gas exchanged-coupled to a system of
classical magnetic ions. For large Rashba spin-orbit coupling a single electron
can become self-trapped in a skyrmion spin texture self-induced in the magnetic
ions system. This new quasiparticle carries electrical and topological charge
as well a... | 1710.02182v1 |
2017-10-07 | Bistability, oscillations and bidirectional motion of ensemble of hydrodynamically-coupled molecular motors | We analyze the collective behavior of hydrodynamically coupled molecular
motors. We show that the local fluxes induced by motors displacement can induce
the experimentally observed bidirectional motion of cargoes and vesicles. By
means of a mean--field approach we show that sustained oscillations as well as
bistable co... | 1710.02666v1 |
2017-10-09 | Design, Fabrication, and Characterization of Ta2O5 Photonic Strip Waveguides | Efficient coupling of single quantum emitters to guided optical modes of
integrated optical devices is of high importance for applications in quantum
information science as well as in the field of sensing. Here we present the
design and fabrication of a platform for on-chip experiments based on
dielectric optical singl... | 1710.03095v1 |
2017-10-09 | A Coherent Spin-Photon Interface in Silicon | Electron spins in silicon quantum dots are attractive systems for quantum
computing due to their long coherence times and the promise of rapid scaling
using semiconductor fabrication techniques. While nearest neighbor exchange
coupling of two spins has been demonstrated, the interaction of spins via
microwave frequency... | 1710.03265v1 |
2017-10-10 | Co-tunneling spin blockade observed in a three-terminal triple quantum dot | We prepare a triple quantum dot with a separate contact lead to each dot to
study Pauli spin blockade in the tunnel-coupled three dots in a row. We measure
the tunneling current flowing between the center dot and either the left or
right dot with the left and right leads as a common source and the center lead
as a drai... | 1710.03378v1 |
2017-10-23 | Time-reversal-invariant spin-orbit-coupled bilayer Bose-Einstein Condensates | Time-reversal invariance plays a crucial role for many exotic quantum phases,
particularly for topologically nontrivial states, in spin-orbit coupled
electronic systems. Recently realized spin-orbit coupled cold-atom systems,
however, lack the time-reversal symmetry due to the inevitable presence of an
effective transv... | 1710.08323v2 |
2017-10-23 | Squeezed state evolution and entanglement in lossy coupled resonator optical waveguides | We investigate theoretically the temporal evolution of a squeezed state in
lossy coupled-cavity systems. We present a general formalism based upon the
tight binding approximation and apply this to a two-cavity system as well as to
a coupled resonator optical waveguide in a photonic crystal. We derive
analytical express... | 1710.08519v1 |
2017-10-26 | Hamiltonian mean field model : effect of temporal perturbation in coupling matrix | The Hamiltonian mean-field (HMF) model is a system of fully coupled rotators
which exhibits a second-order phase transition at some critical energy in its
canonical ensemble. We investigate the case where the interaction between the
rotors is governed by a time-dependent coupling matrix. Our numerical study
reveals a s... | 1710.09633v2 |
2017-12-03 | Hadronic Lorentz Violation in Chiral Perturbation Theory Including the Coupling to External Fields | If any violation of Lorentz symmetry exists in the hadron sector, its
ultimate origins must lie at the quark level. We continue the analysis of how
the theories at these two levels are connected, using chiral perturbation
theory. Considering a two-flavor quark theory, with dimension-4 operators that
break Lorentz symme... | 1712.00838v2 |
2017-12-05 | Magneto-elastic coupling in Fe-based superconductors | We used polarization-resolved Raman scattering to study the magneto-elastic
coupling in the parent compounds of several families of Fe-based
superconductors (BaFe2As2, EuFe2As2, NaFeAs, LiFeAs, FeSe and LaFeAsO). We
observe an emergent Ag-symmetry As phonon mode in the XY scattering geometry
whose intensity is signific... | 1712.01896v1 |
2017-12-06 | Amplified and tunable transverse and longitudinal spin-photon coupling in hybrid circuit-QED | We describe a method to tune, in-situ, between transverse and longitudinal
light-matter coupling in a hybrid circuit-QED device composed of an electron
spin degree of freedom coupled to a microwave transmission line cavity. Our
approach relies on periodic modulation of the coupling itself, such that in a
certain frame ... | 1712.02077v1 |
2017-12-11 | Critical phenomena at the complex tensor ordering phase transition | We investigate the critical properties of the phase transition towards
complex tensor order that has been proposed to occur in spin-orbit coupled
superconductors. For this purpose we formulate the bosonic field theory for
fluctuations of the complex irreducible second-rank tensor order parameter
close to the transition... | 1712.03981v2 |
2017-12-12 | Tuning coupling between superconducting resonators with collective qubits | By simultaneously coupling multiple two-level artificial atoms to two
superconducting resonators, we design a quantum switch that tunes the
resonator-resonator coupling strength from zero to a large value proportional
to the number of qubits. This process is implemented by engineering the qubits
into different subradia... | 1712.04357v2 |
2017-12-14 | Collapsing spherical star in Scalar-Einstein-Gauss-Bonnet gravity with a quadratic coupling | We study the evolution of a self interacting scalar field in
Einstein-Gauss-Bonnet theory in four dimension where the scalar field couples
non minimally with the Gauss-Bonnet term. Considering a polynomial coupling of
the scalar field with the Gauss-Bonnet term, a self-interaction potential and
an additional perfect fl... | 1712.05149v2 |
2017-12-17 | Dynamics of dissipative Landau-Zener transitions | A non-perturbative treatment, the Dirac-Frenkel time-dependent variation is
employed to examine dynamics of the Landau-Zener model with both diagonal and
off-diagonal qubit-bath coupling using the multiple Davydov trial states. It is
shown that steady-state transition probabilities agree with analytical
predictions at ... | 1712.06058v1 |
2017-12-21 | Cooper Pairing in A Doped 2D Antiferromagnet with Spin-Orbit Coupling | We study the two-dimensional Hubbard model with the Rashba type spin-orbit
coupling within and beyond the mean-field theory. The antiferromagnetic ground
state for the model at half-filling and the Cooper pairing induced by
antiferromagnetic spin fluctuations near half-filling are examined based on the
random-phase app... | 1712.07908v1 |
2017-12-22 | Cavity-mediated coherent coupling between distant quantum dots | Scalable architectures for quantum information technologies require to
selectively couple long-distance qubits while suppressing environmental noise
and cross-talk. In semiconductor materials, the coherent coupling of a single
spin on a quantum dot to a cavity hosting fermionic modes offers a new solution
to this techn... | 1712.08569v1 |
2017-12-26 | High-speed quantum transducer with a single-photon emitter in a 2D resonator | Quantum transducers can transfer quantum information between different
systems. Microwave-optical photon conversion is important for future quantum
networks to interconnect remote superconducting quantum computers with optical
fibers. Here we propose a high-speed quantum transducer based on a
single-photon emitter in a... | 1712.09245v2 |
2017-12-27 | Effect of phonon coupling on the generated entangled states of photons from a single quantum dot embedded inside a microcavity | We discuss the generation of two types of entangled state of two photons--
noon state which is entangled in number and polarization, and polarization
entangled state which is entangled in polarization and frequency. We consider a
single quantum dot coupled with a bimodal cavity in strong coupling regime. We
analyze the... | 1712.09555v2 |
2017-12-27 | Thermodynamics of collective enhancement of precision | The circadian oscillator exhibits remarkably high temporal precision, despite
its exposure to several fluctuations. The central mechanism that protects the
oscillator from fluctuations is a collective enhancement of precision, where a
population of coupled oscillators displays higher temporal precision than that
achiev... | 1712.09584v3 |
2018-09-04 | Level Attraction Due to Dissipative Magnon-Photon Coupling | We report dissipative magnon-photon coupling caused by cavity Lenz effect,
where the magnons in a magnet induce a rf current in the cavity, leading to a
cavity back action that impedes the magnetization dynamics. This effect is
revealed in our experiment as level attraction with a coalescence of hybridized
magnon-photo... | 1809.01233v1 |
2018-09-08 | Laplace transform approach for the dynamics of N qubits coupled to a resonator | An approach to use the method of Laplace transform for the perturbative
solution of the Schr\"{o}dinger equation at any order of the perturbation for a
system of $N$ qubits coupled to a cavity with $n$ photons is suggested. We
investigate the dynamics of a system of $N$ superconducting qubits coupled to a
common resona... | 1809.02881v2 |
2018-09-13 | Multi-Dimensional Spatially-Coupled Code Design Through Informed Relocation of Circulants | A circulant-based spatially-coupled (SC) code is constructed by partitioning
the circulants of an underlying block code into a number of components, and
then coupling copies of these components together. By connecting (coupling)
several SC codes, multi-dimensional SC (MD-SC) codes are constructed. In this
paper, we pre... | 1809.04798v1 |
2018-09-14 | Super-Strong Coupling NJL model in arbitrary space-time dimensions | We study chiral symmetry breaking in the Nambu--Jona-Lasinio model
regularized in proper-time in arbitrary space-time dimensions through an
iterative procedure by writing the gap equation in the form of a discrete
dynamical system with the coupling constant as the control parameter.
Expectedly, we obtain the critical c... | 1809.05545v1 |
2018-09-18 | Strong coupling of two-dimensional electron ensemble to a single-mode cavity resonator | We investigate the regime of strong coupling of an ensemble of
two-dimensional electrons to a single-mode cavity resonator. In particular, we
realized such a regime of light-matter interaction by coupling the cyclotron
motion of a collection of electrons on the surface of liquid helium to the
microwave field in a semi-... | 1809.06497v2 |
2018-09-19 | Weak multiplexing in neural networks: Switching between chimera and solitary states | We investigate spatio-temporal patterns occurring in a two-layer multiplex
network of oscillatory FitzHugh-Nagumo neurons, where each layer is represented
by a nonlocally coupled ring. We show that weak multiplexing, i.e., when the
coupling between the layers is smaller than that within the layers, can have a
significa... | 1809.07148v1 |
2018-09-20 | Rapid change of superconductivity and electron-phonon coupling through 19% doping in Bi2212 | Electron-boson coupling plays a key role in superconductivity for many
systems. However, in copper-based high-temperature ($T_c$) superconductors, its
relation to superconductivity remains controversial despite strong
spectroscopic fingerprints. Here we use angle-resolved photoemission
spectroscopy to find a striking c... | 1809.07437v1 |
2018-09-21 | Charge-Density-Wave Transitions of Dirac Fermions Coupled to Phonons | The spontaneous generation of charge-density-wave order in a Dirac fermion
system via the natural mechanism of electron-phonon coupling is studied in the
framework of the Holstein model on the honeycomb lattice. Using two independent
and unbiased quantum Monte Carlo methods, the phase diagram as a function of
temperatu... | 1809.07903v2 |
2018-09-24 | Spin-orbit coupling and spin relaxation of hole states in [001]- and [111]-orientedquantum dots of various geometry | We study the influence of spin-orbit coupling on the hole states in InAs/GaAs
quantum dots grown on [001]- and [111]-oriented substrates belonging to
symmetry point groups: C2v, C3v and D2d. We investigate the impact of various
spin-orbit mechanisms on the strength of coupling between s- and p-shell
states, which is a ... | 1809.09062v3 |
2018-09-24 | Universal Relations in Composite Higgs Models | We initiate a phenomenological study of `universal relations' in composite
Higgs models, which are dictated by nonlinear shift symmetries acting on the
125 GeV Higgs boson. These are relations among one Higgs couplings with two
electroweak gauge bosons (HVV), two Higgses couplings with two electroweak
gauge bosons (HHV... | 1809.09126v1 |
2018-09-25 | Simulation of Coupling Strength of Capacitively Coupled Singlet-Triplet Qubits | We consider a system of two purely capacitively-coupled singlet-triplet
qubits, and numerically simulate the energy structure of four electrons in two
double quantum dots with a large potential barrier between them. We calculate
the interqubit coupling strength using an extended Hund-Mulliken approach which
includes ex... | 1809.09626v2 |
2018-09-27 | Three-Body Decay of $Λ_c^{*}(2595)$ and $Λ_c^{*}(2625)$ with the Inclusion of Direct Two-Pion Coupling | We investigate the three-body decays of $\Lambda_c^*(2595)$ and
$\Lambda_c^*(2625)$ into $\Lambda_c \pi \pi$ by including a direct process
going through the two-pion coupling of $\Lambda_c^*\Lambda_c \pi \pi$ in
addition to the sequential processes going through $\Sigma_c(2455)$ and
$\Sigma_c^*(2520)$. The strength of ... | 1809.10290v1 |
2019-09-02 | Numerical studies on the synchronization of a network of mutually coupled simple chaotic systems | We present in this paper, the synchronization dynamics observed in a network
of mutually coupled simple chaotic systems. The network consisting of chaotic
systems arranged in a square matrix network is studied for their different
types of synchronization behavior. The chaotic attractors of the simple $2
\times 2$ matri... | 1909.00746v1 |
2019-09-05 | Testing Non-minimally Coupled BEC Dark Matter with Gravitational Waves | We study the phenomenology associated to non-minimally coupled dark matter.
In particular, we consider the model where the non-minimal coupling arises from
the formation of relativistic Bose-Einstein condensates in high density regions
of dark matter [1]. This non-minimal coupling is of Horndeski type and leads to
a lo... | 1909.02368v2 |
2019-09-05 | Coupling of deterministically activated quantum emitters in hexagonal boron nitride to plasmonic surface lattice resonances | Cooperative phenomena stemming from radiation-field-mediated coupling between
individual quantum emitters are presently attracting broad interest for on-chip
photonic quantum memories and long-range entanglement. Common to these
applications is the generation of electromagnetic modes over macroscopic
distances. Much re... | 1909.02648v1 |
2019-09-06 | Wave scattering properties of multiple weakly-coupled complex systems | The statistics of scattering of waves inside single ray-chaotic enclosures
have been successfully described by the Random Coupling Model (RCM). We expand
the RCM to systems consisting of multiple complex ray-chaotic enclosures with
variable coupling scenarios. The statistical properties of the model-generated
quantitie... | 1909.03827v1 |
2019-09-03 | Coupling functions in climate | We examine how coupling functions in the theory of dynamical systems provide
a quantitative window into climate dynamics. Previously we have shown that a
one-dimensional periodic non-autonomous stochastic dynamical system can
simulate the monthly statistics of surface air temperature data. Here we expand
this approach ... | 1909.05096v2 |
2019-09-12 | Probing the anomalous triple gauge boson couplings in $e^+e^-\to W^+W^-$ using $W$ polarizations with polarized beams | We study the anomalous $W^+W^-V$ ($V=\gamma,Z$) couplings in $e^+e^-\to
W^+W^-$ using the complete set of polarization observables of $W$ boson with
longitudinally polarized electron ($e^-$) and positron ($e^+$) beams. For the
effective $W^+W^-V$ couplings, we use the most general Lorentz invariant form
factor parametr... | 1909.05496v2 |
2019-09-13 | Circular dichroism mode splitting and bounds to its enhancement with cavity-plasmon-polaritons | The ability to differentiate chiral molecules of different handedness is of
great importance for chemical and life sciences. Since most of the relevant
chiral molecules have their chiral transitions in the UV region, detecting
their circular dichroism (CD) signal is associated with practical experimental
challenges of ... | 1909.06217v1 |
2019-09-21 | Stability for coupled waves with locally disturbed Kelvin-Voigt damping | We consider a coupled wave system with partial Kelvin-Voigt damping in the
interval (-1,1), where one wave is dissipative and the other does not. When the
damping is effective in the whole domain (-1,1) it was proven in H.Portillo
Oquendo and P.Sanez Pacheco, optimal decay for coupled waves with Kelvin-voigt
damping, A... | 1909.09838v1 |
2019-09-25 | Optimal Optomechanical Coupling Strength in Multi-Membrane Systems | We calculate the optomechanical coupling strength for a multi-membrane in a
cavity system. The optimal configuration for an array of $N$ membranes placed
near the center of a cavity is identified. This results in a coupling strength
much greater than previously proposed multi-membrane configurations. We find
that the c... | 1909.11384v2 |
2019-09-28 | Polariton assisted down-conversion of photons via nonadiabatic molecular dynamics: a molecular dynamical Casimir effect | Quantum dynamics of the photoisomerization of a single
3,3'-diethyl-2,2'-thiacynine iodide molecule embedded in an optical microcavity
was theoretically studied. The molecule was coupled to a single cavity mode via
the quantum Rabi Hamiltonian, and the corresponding time-dependent
Schr\"odinger equation starting with a... | 1909.13024v1 |
2020-12-02 | Spontaneous spatial order in two-dimensional ferromagnetic spin-orbit coupled uniform spin-1 condensate solitons | We demonstrate spontaneous spatial order in stripe and super-lattice solitons
in a Rashba spin-orbit (SO) coupled spin-1 uniform quasi-two-dimensional
(quasi-2D) ferromagnetic Bose-Einstein condensate. For weak SO coupling, the
solitons are of the $(- 1,0,+ 1)$ or $(0,+ 1,+ 2)$ type with intrinsic
vorticity, where the ... | 2012.01197v1 |
2020-12-07 | An asymptotically safe SU(5) GUT | We minimally extend the Standard Model field content by adding new
vector-like fermions at the TeV scale to allow gauge coupling unification at a
realistic scale. We embed the model into a $SU(5)$ grand unified theory that is
asymptotically safe and features an interacting fixed point for the gauge
coupling. There are ... | 2012.03987v1 |
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