publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2016-04-15 | A Trigonometric Cubic B-spline Finite Element Method for Solving the Nonlinear Coupled Burger Equation | The coupled Burgers equation is solved by way of the trigonometric B-spline
collocation method. The unknown of the coupled Burgers equation is integrated
in time by aid of the Crank-Nicolson method. Resulting time-integrated coupled
Burgers equation is discretized using the trigonometric cubic B-spline
collocation meth... | 1604.04419v1 |
2016-04-20 | Cavity piezomechanical strong coupling and frequency conversion on an aluminum nitride chip | Schemes to achieve strong coupling between mechanical modes of aluminum
nitride microstructures and microwave cavity modes due to the piezoelectric
effect are proposed. We show that the strong coupling regime is feasible for an
on-chip aluminum nitride device that is either enclosed by a three-dimensional
microwave cav... | 1604.06027v1 |
2016-06-24 | Topological quantum phase transition driven by anisotropic spin-orbit coupling in trinuclear organometallic coordination crystals | We show how quasi-one-dimensional correlated insulating states arise at
two-thirds filling in organometallic multinuclear coordination complexes
described by layered decorated honeycomb lattices. The interplay of spin-orbit
coupling and electronic correlations leads to pseudospin-1 moments arranged in
weakly coupled ch... | 1606.07691v1 |
2016-06-25 | Monolayer graphene as dissipative membrane in an optical resonator | We experimentally demonstrate coupling of an atomically thin, free-standing
graphene membrane to an optical cavity. By changing the position of the
membrane along the standing-wave field of the cavity we tailor the dissipative
coupling between the membrane and the cavity, and we show that the dissipative
coupling can o... | 1606.07897v1 |
2016-03-15 | Dynamics of Hydrogen Bonds Coupling on the Specific DNA-Protein Interactions | We propose a dynamical model depicting the interactions between DNA and a
specific binding protein involving long range transmissions. The dynamics rely
on the coupling between Hydrogen bonds formed between DNA and protein and
between the base pairs because they account for site specificity of the
binding. We adopt the... | 1607.01608v1 |
2016-07-10 | Time optimal control in coupled spin systems: a second order analysis | In this paper, we study some control problems that derive from time optimal
control of coupled spin dynamics in NMR spectroscopy and quantum information
and computation. Time optimal control helps to minimize relaxation losses. The
ability to synthesize, local unitaries, much more rapidly than evolution of
couplings, g... | 1607.02692v2 |
2016-07-13 | On four-derivative terms in IIB Calabi-Yau orientifold reductions | We perform a Kaluza-Klein reduction of IIB supergravity including purely
gravitational $\alpha '^3$-corrections on a Calabi-Yau threefold, and perform
the orientifold projection accounting for the presence of $O3/O7$-planes. We
consider infinitesimal K\"{a}hler deformations of the Calabi-Yau background and
derive the c... | 1607.03913v2 |
2016-07-29 | Twisted spin vortices in a spinor-dipolar Bose-Einstein condensate with Rashba spin-orbit coupling | We consider a spin-1 Bose-Einstein condensate with Rashba spin-orbit coupling
and dipole-dipole interaction confined in a cigar-shaped trap. Due to the
combined effects of spin-orbit coupling, dipole-dipole interaction, and trap
geometry, the system exhibits a rich variety of ground-state spin structures,
including twi... | 1607.08724v1 |
2017-02-15 | Superradiant Amplification of a Scalar Wave Coupled Kinematically to Curvature Scattered off a Reissner-Nordström Black Hole | We study the dynamics of a massive charged scalar wave which except its
canonical coupling to gravity it is also coupled kinematically to Einstein
tensor. We find that as the strength of the new coupling is increased the
scattered wave off the horizon of a Reissner-Nordstr\"om black hole is
superradiantly amplified res... | 1702.04618v2 |
2017-02-20 | Electron-ion coupling in semiconductors beyond Fermi's golden rule | In the present work, a theoretical study of electron-phonon (electron-ion)
coupling rates in semiconductors driven out of equilibrium is performed.
Transient change of optical coefficients reflects the band gap shrinkage in
covalently bonded materials, and thus, the heating of atomic lattice. Utilizing
this dependence,... | 1702.06174v1 |
2017-03-23 | Boson-vortex duality in compressible spin-orbit coupled BECs | Using a (1+2)-dimensional boson-vortex duality between non-linear
electrodynamics and a two-component compressible Bose-Einstein condensate (BEC)
with spin-orbit (SO) coupling, we obtain generalised versions of the
hydrodynamic continuity and Euler equations where the phase defect and
non-defect degrees of freedom ente... | 1703.07918v1 |
2017-08-15 | Conditional displacement interaction in ultrastrong-coupling regime | We investigate the realization of conditional displacement interaction in the
transversal direction in ultrastrongly coupled circuit quantum electrodynamics
by adjusting parameters of external magnetic fields. The special interaction is
derived in the system of charge qubit(s) coupled to a LC resonator. We
consolidate ... | 1708.04371v1 |
2018-02-08 | Anomalous phonon lifetime shortening in paramagnetic CrN caused by magneto-lattice coupling: A combined spin and ab initio molecular dynamics study | We study the mutual coupling of spin fluctuations and lattice vibrations in
paramagnetic CrN by combining atomistic spin dynamics and ab initio molecular
dynamics. The two degrees of freedom are dynamically coupled leading to
non-adiabatic effects. Those effects suppress the phonon life times at low
temperature compare... | 1802.02934v1 |
2018-02-13 | Effect of phonon coupling on cooperative two-photon emission from two-quantum dots | We predict dominating cooperative two-photon emission from two quantum dots
coupled with a single mode photonic crystal cavity. The cooperative two photon
emission occurs when excitons in two off-resonantly coupled quantum dots decay
simultaneously. The interaction with common cavity field leads to cavity
induced two-p... | 1802.04487v1 |
2018-02-13 | Modulational instability of nonlinear polarization mode coupling in microresonators | We investigate frequency comb generation in the presence of polarization
effects induced by nonlinear mode coupling in microresonator devices. A set of
coupled temporal Lugiato-Lefever equations are derived to model the propagation
dynamics, and an in-depth study is made of the modulational instability of
their multist... | 1802.04535v1 |
2018-02-19 | On a saddle point problem arising from magneto-elastic coupling | This paper deals with the analysis of a coupled problem arising from linear
magneto-elastostaticity. The model, which can be derived by an energy
principle, gives valuable insight into the coupling mechanism and features a
saddle point structure with the elastic displacement and magnetic scalar
potential as independent... | 1802.06650v1 |
2018-04-04 | Mechanism of solitary state appearance in an ensemble of nonlocally coupled Lozi maps | We study the peculiarities of the solitary state appearance in the ensemble
of nonlocally coupled chaotic maps. We show that nonlocal coupling and features
of the partial elements lead to arising of multistability in the system. The
existence of solitary state is caused by formation of two attractive sets with
differen... | 1804.01289v1 |
2018-04-04 | Atomic switch for control of heat transfer in coupled cavities | Controlled heat transfer and thermal rectification in a system of two coupled
cavities connected to thermal reservoirs are discussed. Embedding a
dispersively interacting two-level atom in one of the cavities allows switching
from a thermally conducting to resisting behavior. By properly tuning the
atomic state and sys... | 1804.01897v2 |
2018-03-29 | The impact of electrical couplings on the sequential bursting activity in the ensemble of inhibitory coupled Van der Pol elements | The new phenomenological model of the ensemble of three neurons with chemical
(synaptic) and electrical couplings has been studied. One neuron is modeled by
a single Van der Pol oscillator. The influence of the electrical coupling
strength and the frequency mismatch between the elements to the regime of
sequential acti... | 1804.02437v1 |
2018-04-11 | Constraint-Based Synthesis of Coupling Proofs | Proof by coupling is a classical technique for proving properties about pairs
of randomized algorithms by carefully relating (or coupling) two probabilistic
executions. In this paper, we show how to automatically construct such proofs
for probabilistic programs. First, we present f-coupled postconditions, an
abstractio... | 1804.04052v1 |
2018-11-02 | Numerical phase reduction beyond the first order approximation | We develop a numerical approach to reconstruct the phase dynamics of driven
or coupled self-sustained oscillators. Employing a simple algorithm for
computation of the phase of a perturbed system, we construct numerically the
equation for the evolution of the phase. Our simulations demonstrate that the
description of th... | 1811.00771v2 |
2018-11-22 | Enhanced Rashba spin-orbit coupling in core-shell nanowires by the interfacial effect | We report on $\vec{k}\cdot\vec{p}$ calculations of Rashba spin-orbit coupling
controlled by external gates in InAs/InAsP core-shell nanowires. We show that
charge spilling in the barrier material allows for a stronger symmetry breaking
than in homoegenous nano-materials, inducing a specific interface-related
contributi... | 1811.09088v1 |
2010-05-10 | Relaxation Dynamics of Photocarriers in One-Dimensional Mott Insulators Coupled to Phonons | We examine recombination processes of photocarriers in one-dimensional Mott
insulators coupled to phonons. Performing density matrix renormalization group
calculations, we find that, even for small electron-phonon coupling, many
phonons are generated dynamically, which cause initial relaxation process after
the irradia... | 1005.1690v3 |
2010-05-21 | Synchronization of coupled limit cycles | A unified approach for analyzing synchronization in coupled systems of
autonomous differential equations is presented in this work. Through a careful
analysis of the variational equation of the coupled system we establish a
sufficient condition for synchronization in terms of the geometric properties
of the local limit... | 1005.4074v2 |
2013-08-06 | Barrierless Electronic Relaxation in Solution: An analytically solvable model with arbitrary coupling | In our recent publication, we have proposed an analytical method for solving
the problem of electronic relaxation in solution, modeled by a particle
undergoing diffusive motion under the influence of two arbitrary potentials and
the coupling between the two potentials was assumed to be localized at one
point. In this p... | 1308.1354v2 |
2013-08-07 | Coupling of optical far-fields into aperture-less plasmonic nanofibre tips | This paper reports on the excitation of surface plasmons on gold-coated
nanofibre tips by side-illumination with a laser beam and the coupling of the
surface plasmons to the optical fiber. The measurements show a strong
dependence of the coupling efficiency on the incidence angle with a maximum
coupling efficiency on t... | 1308.1593v1 |
2013-08-10 | Desired Control of Mutually Delay-Coupled Diode Lasers near Phase-flip Transition Regimes | We investigate zero-lag synchronization (ZLS) between delay-coupled diode
lasers system with mutual optical injection in a face-to-face configuration. We
observed numerical evidence of such ZLS without using any relay element or
mediating laser. In addition, simulation also demonstrate that this kind of
robust ZLS occu... | 1308.2313v1 |
2013-08-15 | Spintronics and Pseudospintronics in Graphene and Topological Insulators | The two-dimensional electron systems in graphene and in topological
insulators are described by massless Dirac equations. Although the two systems
have similar Hamiltonians, they are polar opposites in terms of spin-orbit
coupling strength. We briefly review the status of efforts to achieve long spin
relaxation times i... | 1308.3428v1 |
2013-08-18 | (In-)Stability and Stabilisation of QNL-Type Atomistic-to-Continuum Coupling Methods | We study the stability of ghost force-free energy-based
atomistic-to-continuum coupling methods. In 1D we essentially complete the
theory by introducing a universally stable a/c coupling as well as a
stabilisation mechanism for unstable coupling schemes.
We then present a comprehensive study of a two-dimensional scal... | 1308.3894v1 |
2013-08-22 | The quantum AdS_5 x S^5 superstring at finite coupling | The integrability of string theory in AdS_5 x S^5 and of the dilatation
operator of N=4 super-Yang-Mills theory has been used to propose an exact
solution to the spectral problem in these theories. Weak coupling perturbation
theory both in gauge theory and on the worldsheet has been extensively used to
verify this solu... | 1308.4875v1 |
2013-08-24 | Effect of solute segregation on shear-induced grain boundary motion | Atomic-scale simulations are performed to study the effect of solute
segregation on the shear-induced motion of select grain boundaries in the
classical $\alpha$-Fe/C system. At shear rates larger than the solute diffusion
rate, we observe a transition from coupled motion to sliding. Below a critical
solute excess, the... | 1308.5350v1 |
2013-08-29 | Spin-orbit coupling and spin Hall effect for neutral atoms without spin-flips | We propose a scheme which realizes spin-orbit coupling and the spin Hall
effect for neutral atoms in optical lattices without relying on near resonant
laser light to couple different spin states. The spin-orbit coupling is created
by modifying the motion of atoms in a spin-dependent way by laser recoil. The
spin select... | 1308.6349v1 |
2014-03-01 | Synchronization in populations of sparsely connected pulse-coupled oscillators | We propose a population model for $\delta$-pulse-coupled oscillators with
sparse connectivity. The model is given as an evolution equation for the phase
density which take the form of a partial differential equation with a non-local
term. We discuss the existence and stability of stationary solutions and
exemplify our ... | 1403.0102v1 |
2014-03-05 | Breathing solitary-pulse pairs in a linearly coupled system | It is shown that pairs of solitary pulses (SPs) in a linearly-coupled system
with opposite group-velocity dispersions form robust breathing bound states.
The system can be realized by temporal-modulation coupling of SPs with
different carrier frequencies propagating in the same medium, or by coupling of
SPs in a dual-c... | 1403.1031v1 |
2014-03-10 | Infinitely many solutions to linearly coupled Schrödinger equations with non-symmetric potential | We study a linearly coupled Schr\"{o}dinger system in $\R^N(N\leq3).$ Assume
that the potentials in the system are continuous functions satisfying suitable
decay assumptions, but without any symmetry properties and the parameters in
the system satisfy some suitable restrictions. Using the Liapunov-Schmidt
reduction met... | 1403.2179v2 |
2014-03-11 | Holographic thermalization patterns | We investigate the behaviour of various correlators in N=4 super Yang Mills
theory, taking finite coupling corrections into account. In the thermal limit
we investigate the flow of the quasinormal modes as a function of the 't Hooft
coupling. Then by using a specific model of holographic thermalization we
investigate t... | 1403.2489v1 |
2014-03-12 | Present and future constraints on top EW couplings | Various BSM models predict large deviations of the top electroweak couplings.
Many examples will be given emphasizing the need for precise and model
independent measurements of these couplings. Here I address the question of
compatibility between theoretical predictions and the LEP/SLC/Tevatron
constraints which, throu... | 1403.2893v1 |
2014-03-25 | Synchronization in nonlinear oscillators with conjugate coupling | In this work, we investigate the synchronization in oscillators with
conjugate coupling in which oscillators interact via dissimilar variables. The
synchronous dynamics and its stability are investigated theoretically and
numerically. We find that the synchronous dynamics and its stability are
dependent on both couplin... | 1403.6226v1 |
2017-01-12 | Molecular Plasmonics: strong coupling at the low molecular density limit | We study the strong coupling between the molecular excited state and the
plasmonic modes of silver hole arrays with a resonant frequency very close to
the asymptotic line of the plasmonic dispersion relation, at the nonlinear
regime. We demonstrate that the strong coupling regime can be achieved between
the two sub-sys... | 1701.03402v2 |
2017-01-17 | Vortex pairs in a spin-orbit coupled Bose-Einstein condensate | Static and dynamic properties of vortices in a two-component Bose-Einstein
condensate with Rashba spin-orbit coupling are investigated. The mass current
around a vortex core in the plane-wave phase is found to be deformed by the
spin-orbit coupling, and this makes the dynamics of the vortex pairs quite
different from t... | 1701.04591v1 |
2017-01-19 | Controllability of a 2x2 parabolic system by one force with a space-dependent coupling term of order one | This paper is devoted to the controllability of linear systems of two coupled
parabolic equations when the coupling involves a space dependent first order
term. This system is set on an bounded interval, and the first equation is
controlled by a force supported in a subinterval of I or on the boundary. In
the case wher... | 1701.05315v1 |
2017-01-19 | Positive and negative results on the internal controllability of parabolic equations coupled by zero and first order terms | This paper is devoted to studying the null and approximate controllability of
two linear coupled parabolic equations posed on a smooth domain of R^N (N>1)
with coupling terms of zero and first orders and one control localized in some
arbitrary nonempty open subset of the domain. We prove the null controllability
under ... | 1701.05318v1 |
2017-01-20 | Non-minimally coupled gravity and vacuum stability | We investigate the properties of vacuum decay taking into account a
non-minimal coupling to gravity. We extend the standard thin-wall solution to
include the non-minimal coupling and verify its validity by comparison with a
full numerical study. We also investigate the implications of a~large
cosmological constant whos... | 1701.05731v1 |
2018-05-18 | Boosting Entanglement Between Exciton-Polaritons with On-Off Switching of Josephson Coupling | We show that the appropriate on-off switching of Josephson coupling between
exciton-polaritons in coupled semiconductor microcavities can reveal the full
capacity for generating entanglement with a recently proposed method which
essentially enhances the nonlinearity of the system. The improvement achieved
with this sim... | 1805.08600v1 |
2018-05-25 | Generation of Spin Current from Lattice Distortion Dynamics: Spin-Orbit Routes | Generation of spin current from lattice distortion dynamics in metals is
studied with special attention on the effect of spin-orbit coupling. Treating
the lattice distortion by local coordinate transformation, we calculate spin
current and spin accumulation with the linear response theory. It is found that
there are tw... | 1805.10328v2 |
2008-07-09 | Effect of different Dzyaloshinskii-Moriya interactions on entanglement in the Heisenberg XYZ chain | In this paper, we study the thermal entanglement in a two-qubit Heisenberg
XYZ system with different Dzyaloshinskii-Moriya (DM) couplings. We show that
different DM coupling parameters have different influences on the entanglement
and the critical temperature. In addition, we find that when $J_{i}$
($i$-component spin ... | 0807.1457v2 |
2008-07-10 | Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus | We propose a scheme with dc-control of finite bandwidth to implement
two-qubit gate for superconducting flux qubits at the optimal point. We provide
a detailed non-perturbative analysis on the dynamic evolution of the qubits
interacting with a common quantum bus. An effective qubit-qubit coupling is
induced while decou... | 0807.1584v2 |
2008-07-22 | Tests of flavor universality for neutrino-Z couplings in future neutrino experiments | We investigate the physics potential of NuSOnG experiment to probe new
physics contributions to Z-neutrino-neutrino couplings in muon-neutrino
electron elastic and neutral-current deep-inelastic scattering processes. We
employ an effective Lagrangian approach and do not a priori assume universality
of the coupling of n... | 0807.3385v2 |
2008-07-22 | Coherent-incoherent transition in a Cooper-pair-box coupled to a quantum oscillator: an equilibrium approach | Temperature effect on quantum tunneling in a Cooper-pair-box coupled to a
quantum oscillator is studied by both numerical and analytical calculations. It
is found that, in strong coupling regions, coherent tunneling of a
Cooper-pair-box can be destroyed by its coupling to a quantum oscillator and
the tunneling becomes ... | 0807.3475v1 |
2008-07-28 | Dissociation of Relativistic Projectiles with the Continuum-Discretized Coupled-Channels Method | Relativistic effects in the breakup of weakly-bound nuclei at intermediate
energies are studied by means of the continuum-discretized coupled-channels
method with eikonal approximation. Nuclear coupling potentials with Lorentz
contraction are newly included and those effects on breakup cross sections are
investigated. ... | 0807.4485v2 |
2008-07-28 | Echo Phenomena in Large Systems of Coupled Oscillators | As exemplified by the Kuramoto model, large systems of coupled oscillators
may undergo a transition to phase coherence with increasing coupling strength.
It is shown that below the critical coupling strength for this transition such
systems may be expected to exhibit `echo' phenomena: a stimulation by two
successive pu... | 0807.4499v1 |
2008-07-30 | Coherent switching by detuning a side-coupled quantum-dot system | We investigate phase coherent electronic transport in an open quantum system,
which consists of quantum dots side-coupled to a nanowire. It is demonstrated
that coherent switching can be characterized by adjusting the electronic
energy. A comparative analysis of quantum coherence effects in side-coupled
quantum-dot sys... | 0807.4865v1 |
2008-07-31 | Non-invasive detection of molecular bonds in quantum dots | We performed charge detection on a lateral triple quantum dot with star-like
geometry. The setup allows us to interpret the results in terms of two double
dots with one common dot. One double dot features weak tunnel coupling and can
be understood with atom-like electronic states, the other one is strongly
coupled form... | 0807.5095v1 |
2009-12-05 | Delta-Interference of Two Friedel Resonances | When a single resonator is coupled to a continuous spectrum one obtains a
resonance of finite half-width. Such a resonance is known in many fields of
physics. The Friedel resonance is an example where a d-impurity is dissolved in
a simple metal. If two resonators are coupled to the continuous spectrum the
resonances in... | 0912.1049v1 |
2009-12-18 | Properties from relativistic coupled-cluster without truncation: hyperfine constants of $^{25}{\rm Mg}^+$, $^{43}{\rm Ca}^+ $, $^{87}{\rm Sr}^+ $ and $^{137}{\rm Ba}^+$ | We demonstrate an iterative scheme for coupled-cluster properties
calculations without truncating the dressed properties operator. For
validation, magnetic dipole hyperfine constants of alkaline Earth ions are
calculated with relativistic coupled-cluster and role of electron correlation
examined. Then, a detailed analy... | 0912.3681v2 |
2011-11-07 | Constructive role of dissipation for driven coupled bosonic modes | We theoretically investigate a system of two coupled bosonic modes subject to
both dissipation and external driving. We show that in the steady state the
degree of entanglement between the coupled bosonic modes can be enhanced by
dissipation. The non-monotonic dependence of entanglement on the decay rates is
observed w... | 1111.1709v2 |
2011-11-14 | Chameleon Effects on Small Scale Structure and the Baryonic Jeans Mass | In the framework of Newtonian cosmology or general relativity it is simple to
derive a mass scale below which collapsed structures are relatively devoid of
baryons. We examine how the inclusion of a chameleon scalar field affects this
baryonic Jeans mass, bearing in mind both the canonical case of a
gravitational-stren... | 1111.3227v1 |
2011-11-21 | Multipartite Entanglement Generation Assisted by Inhomogeneous Coupling | We show that controllable inhomogeneous coupling between two-level systems
and a common data bus provides a fast mechanism to produce multipartite
entanglement. Our proposal combines resonant interactions and engineering of
coupling strengths---between the qubits and the single mode---leading to well
defined entangled ... | 1111.4966v1 |
2011-11-22 | z/-z Symmetry of spin-orbit coupling and weak localization in graphene | We show that the influence of spin-orbit (SO) coupling on the weak
localization effect for electrons in graphene depends on the lack or presence
of z/-z symmetry in the system. While for z/-z asymmetric SO coupling,
disordered graphene should display a weak anti-localization behavior at lowest
temperature, z/-z symmetr... | 1111.5267v1 |
2011-11-22 | Strong Coupling Optimization With Planar Spiral Resonators | Planar spirals offer a highly scalable geometry appropriate for wireless
power transfer via strongly coupled inductive resonators. We numerically derive
a set of geometric scale and material independent coupling terms, and analyze a
simple model to identify design considerations for a variety of different
materials. We... | 1111.5271v1 |
2011-11-29 | Collective strong coupling in a lossy optical cavity | We observe vacuum Rabi splitting in a lossy nearly confocal cavity indicating
the strong coupling regime, despite a weak single-atom single-mode coupling.
Strong collective interaction manifests itself in the typical
$\sqrt{N}$-dependence of the normal mode splitting on the number of atoms $N$.
The $TEM_{00}$-mode coup... | 1111.6770v1 |
2011-11-30 | Sub-Poissonian photon statistics in a strongly coupled single-qubit laser | We investigate qubit lasing in the strong coupling limit. The qubit is given
by a Cooper-pair box, and population inversion is established by an additional
third state, which can be addressed via quasiparticle tunneling. The coupling
strength between oscillator and qubit is assumed to be much higher than the
quasiparti... | 1111.7184v1 |
2011-11-30 | Ultra strong coupling regime and plasmon-polaritons in parabolic semiconductor quantum wells | Ultra strong coupling is studied in a modulation-doped parabolic potential
well coupled to an inductance-capacitance resonant circuit. In this system, in
accordance to Kohn's theorem, strong reduction of the energy level separation
caused by the electron-electron interaction compensates the depolarization
shift. As a r... | 1111.7266v2 |
2012-01-16 | Amplitude death in complex networks induced by environment | We present a mechanism for amplitude death in coupled nonlinear dynamical
systems on a complex network having interactions with a common environment-like
external system. We develop a general stability analysis that is valid for any
network topology and obtain the threshold values of coupling constants for the
onset of... | 1201.3244v2 |
2012-01-20 | Josephson dynamics of a spin-orbit coupled Bose-Einstein condensate in a double well potential | We investigate the quantum dynamics of an experimentally realized spin-orbit
coupled Bose-Einstein condensate in a double well potential. The spin-orbit
coupling can significantly enhance the atomic inter-well tunneling. We find the
coexistence of internal and external Josephson effects in the system, which are
moreove... | 1201.4306v1 |
2012-01-29 | Some Unfinished Thoughts on Strong Yukawa Couplings | Yukawa couplings of electroweak Goldstone bosons can be inferred from
experiment, but the existence of an elementary Higgs boson is not yet an
established fact. If a sequential chiral quark generation does exist, it would
bring us now into the strong Yukawa coupling regime. Guided by a
Bethe--Salpeter equation approach... | 1201.6029v1 |
2012-04-04 | Avoiding dark states in open quantum systems by tailored initial correlations | We study the transport of excitations on a V-shaped network of three coupled
two-level systems that are subjected to an environment that induces incoherent
hopping between the nodes. Two of the nodes are coupled to a source while the
third node is coupled to a drain. A common feature of these networks is the
existence ... | 1204.0954v1 |
2012-04-08 | On the dissipative non-minimal braneworld inflation | We study the effects of the non-minimal coupling on the dissipative dynamics
of the warm inflation in a braneworld setup, where the inflaton field is
non-minimally coupled to induced gravity on the warped DGP brane. We study with
details the effects of the non-minimal coupling and dissipation on the
inflationary dynami... | 1204.1714v1 |
2012-04-26 | The Lightest Higgs Boson Mass in the MSSM with Strongly Interacting Spectators | We propose a new mechanism for producing a Higgs boson mass near 125 GeV
within the MSSM. By coupling the MSSM Higgs boson to a set of strongly
interacting fields, large corrections to the Higgs quartic coupling are
induced. Although the Higgs doublets do not participate in the strong dynamics,
they feel the effects of... | 1204.6085v1 |
2013-09-08 | Conformally Coupled Induced Gravity as an Infrared Fixed Point | We have found that the conformally coupled induced gravity can be an infrared
fixed point of induced gravity with Yukawa couplings with matter. The late time
cosmology with a uniform mean matter distribution can be described by the
conformally coupled induced gravity, which has an emergent global conformal
symmetry in ... | 1309.1990v1 |
2013-09-19 | Conformally coupled inflation | A massive scalar field in a curved spacetime can propagate along the light
cone, a causal pathology, which can, in principle, be eliminated only if the
scalar couples conformally to the Ricci curvature of spacetime. This property
mandates conformal coupling for the field driving inflation in the early
universe. During ... | 1309.4900v1 |
2013-09-25 | Spontaneous electric polarization and Magneto-dielectric coupling in ceramic multiferroic Co3TeO6 | We report observation of magneto-electric and magneto-dielectric couplings in
ceramic Co3TeO6. Temperature dependent DC magnetization and dielectric constant
measurements together indicate coupling between magnetic order and electronic
polarization. Strong anomaly in dielectric constant at ~ 18K in zero magnetic
field ... | 1309.6417v1 |
2014-05-16 | Gravitational-Wave Mediated Preheating | We propose a new preheating mechanism through the coupling of the
gravitational field to both the inflaton and matter fields, without direct
inflaton-matter couplings. The inflaton transfers power to the matter fields
through interactions with gravitational waves, which are exponentially enhanced
due to an inflation-gr... | 1405.4288v2 |
2014-05-21 | Synchronization of oscillators in a Kuramoto-type model with generic coupling | We study synchronization properties of coupled oscillators on networks that
allow description in terms of global mean field coupling. These models
generalize the standard Kuramoto-Sakaguchi model, allowing for different
contributions of oscillators to the mean field and to different forces from the
mean field on oscill... | 1405.5464v1 |
2014-05-27 | Lattice mapping for many-body open quantum systems and its application to atoms in photonic cystals | We present a derivation that maps the original problem of a many body open
quantum system (OQS) coupled to a harmonic oscillator reservoir into that of a
many body OQS coupled to a lattice of harmonic oscillators. The present method
is particularly suitable to analyse the dynamics of atoms arranged in a
periodic struct... | 1405.6995v2 |
2014-06-11 | Strongly bound yet light bipolarons for double-well electron-phonon coupling | We use the Momentum Average approximation (MA) to study the ground-state
properties of strongly bound bipolarons in the double-well electron-phonon
(el-ph) coupling model, which describes certain intercalated lattices where the
linear term in the el-ph coupling vanishes due tosymmetry. We show that this
model predicts ... | 1406.3072v1 |
2014-06-17 | The lattice QCD phase diagram in and away from the strong coupling limit | We study lattice QCD with four flavors of staggered quarks. In the limit of
infinite gauge coupling, "dual" variables can be introduced, which render the
finite-density sign problem mild and allow a full determination of the $\mu-T$
phase diagram by Monte Carlo simulations, also in the chiral limit. However,
the contin... | 1406.4397v1 |
2016-05-02 | Coupled-layer description of topological crystalline insulators | We introduce a coupled-layer construction to describe three-dimensional
topological crystalline insulators protected by reflection symmetry. Our
approach uses stacks of weakly-coupled two-dimensional Chern insulators to
produce topological crystalline insulators in one higher dimension, with
tunable number and location... | 1605.00652v2 |
2016-05-08 | Symmetry-broken states on networks of coupled oscillators | When identical oscillators are coupled together in a network, dynamical
steady states are often assumed to reflect network symmetries. Here we show
that alternative persistent states may also exist that break the symmetries of
the underlying coupling network. We further show that these symmetry-broken
coexistent states... | 1605.02271v1 |
2016-05-10 | Coherently coupling distinct spin ensembles through a high-$T_c$ superconducting resonator | The problem of coupling multiple spin ensembles through cavity photons is
revisited by using PyBTM organic radicals and a high-$T_c$ superconducting
coplanar resonator. An exceptionally strong coupling is obtained and up to
three spin ensembles are simultaneously coupled. The ensembles are made
physically distinguishab... | 1605.02879v1 |
2016-05-10 | Magnetic-field-mediated coupling and control in hybrid atomic-nanomechanical systems | Magnetically coupled hybrid quantum systems enable robust quantum state
control through Landau-Zener transitions. Here, we show that an ultracold
atomic sample coupled to a nanomechanical resonator via oscillating magnetic
fields can be used to cool the resonator's mechanical motion, to measure the
mechanical temperatu... | 1605.03126v1 |
2016-05-20 | Breathers in Hamiltonian ${\cal PT}$-symmetric chains of coupled pendula under a resonant periodic force | We derive a Hamiltonian version of the ${\cal PT}$-symmetric discrete
nonlinear Schr\"{o}dinger equation that describes synchronized dynamics of
coupled pendula driven by a periodic movement of their common strings. In the
limit of weak coupling between the pendula, we classify the existence and
spectral stability of b... | 1605.06455v1 |
2016-05-29 | Wasserstein approximations of the Lévy area random walk via polynomial perturbations of Gaussian distributions | We construct a coupling between the random walk composed of L\'evy area
increments from a $d$-dimensional Brownian motion and a random walk composed of
quadratic polynomials of Gaussian random variables. This coupling construction
is used to produce a new pathwise approximation scheme for stochastic
differential equati... | 1605.08996v1 |
2016-05-24 | Non- Markovian Quantum Stochastic Equation For Two Coupled Oscillators | The system of nonlinear Langevin equations was obtained by using
Hamiltonian's operator of two coupling quantum oscillators which are
interacting with heat bath. By using the analytical solution of these
equations, the analytical expressions for transport coefficients was found.
Generalized Langevin equations and fluct... | 1605.09327v1 |
2016-08-18 | Amplitude determinant coupled cluster with pairwise doubles | Recently developed pair coupled cluster doubles (pCCD) theory successfully
reproduces doubly occupied configuration interaction (DOCI) with mean field
cost. However, the projective nature of pCCD makes the method non-variational
and thus hard to improve systematically. As a variational alternative, we
explore the idea ... | 1608.05195v1 |
2017-06-07 | Some complexity and approximation results for coupled-tasks scheduling problem according to topology | We consider the makespan minimization coupled-tasks problem in presence of
compatibility constraints with a specified topology. In particular, we focus on
stretched coupled-tasks, i.e. coupled-tasks having the same sub-tasks execution
time and idle time duration. We study several problems in framework of classic
comple... | 1706.02214v1 |
2017-06-24 | Magnon cotunneling through a quantum dot | I consider a single-level quantum dot coupled to two reservoirs of spin waves
(magnons). Such systems have been studied recently from the point of view of
possible coupling between electronic and magnonic spin currents. However,
usually weakly coupled systems were investigated. When coupling between the dot
and reservo... | 1706.07914v1 |
2017-06-26 | Strong Coupling Limit of A Family of Chern-Simons-matter Theories | We investigate the strong coupling limit of a family of Chern-Simons-matter
theories in the planar limit. The family consists of ${\cal N}=3$ theories with
the gauge group ${\rm U}(N_1)_{k_1}\times{\rm U}(N_2)_{k_2}$ coupled to $n$
bi-fundamental hypermultiplets. All observables which can be determined from
the planar ... | 1706.08204v2 |
2017-10-10 | Flipping-shuttle oscillations of bright one- and two-dimensional solitons in spin-orbit-coupled Bose-Einstein condensates with Rabi mixing | We analyze a possibility of macroscopic quantum effects in the form of
coupled structural oscillations and shuttle motion of bright two-component
spin-orbit-coupled striped (one-dimensional, 1D) and semi-vortex
(two-dimensional, 2D) matter-wave solitons, under the action of linear mixing
(Rabi coupling) between the com... | 1710.03664v1 |
2017-10-13 | Dynamical analysis for a scalar-tensor model with Gauss-Bonnet and non-minimal couplings | We study the autonomous system for a scalar-tensor model of dark energy with
Gauss-Bonnet and non-minimal couplings. The critical points describe important
stable asymptotic scenarios including quintessence, phantom and de Sitter
attractor solutions. Two functional forms for the coupling functions and the
scalar potent... | 1710.04760v1 |
2017-10-25 | On the Scarcity of Weak Coupling in the String Landscape | We study the geometric requirements on a threefold base for the corresponding
F-theory compactification to admit a weakly-coupled type IIB limit. We examine
both the standard Sen limit and a more restrictive limit, and determine
conditions sufficient for their non-existence for both toric bases and more
general algebra... | 1710.09374v1 |
2017-10-30 | Star network synchronization led by strong coupling-induced frequency squeezing | We consider a star network consisting of N oscillators coupled to a central
one which in turn is coupled to an infinite set of oscillators (reservoir),
which makes it leaking. Two of the N + 1 normal modes are dissipating, while
the remaining N - 1 lie in a frequency range which is more and more squeezed as
the couplin... | 1710.11025v1 |
2017-10-31 | Synchronization in Networks of Diffusively Coupled Nonlinear Systems: Robustness Against Time-Delays | In this manuscript, we study the problem of robust synchronization in
networks of diffusively time-delayed coupled nonlinear systems. In particular,
we prove that, under some mild conditions on the input-output dynamics of the
systems and the network topology, there always exists a unimodal region in the
parameter spac... | 1710.11276v1 |
2017-12-14 | Coupled Hall-Littlewood functions, vertex operators and the $q$-boson model | In this paper, we firstly give the definition of the coupled Hall-Littlewood
function and its realization in terms of vertex operators. Then we construct
the representation of the two-site generalized $q$-boson model in the algebra
of coupled Hall-Littlewood functions. Finally, we find that the vertex
operators which g... | 1712.05093v1 |
2018-09-08 | Triple Higgs Boson Coupling in Gauge-Higgs Unification | We consider the triple coupling of the Higgs boson in the context of the
gauge-Higgs unification scenario. We show that the triple coupling of the Higgs
boson in this scenario generically deviates from SM prediction since the Higgs
potential in this scenario has a periodicity. We calculate the coupling in the
five-dime... | 1809.02748v2 |
2019-09-11 | On String Theory Expectations for Photon Couplings to Axion-Like Particles | ALP-photon couplings are modeled in large ensembles of string vacua and
random matrix theories. In all cases, the effective coupling increases
polynomially in the number of ALPs, of which hundreds or thousands are expected
in the string ensembles, many of which are ultralight. The expected value of
the couplings $g_{a\... | 1909.05257v1 |
2020-12-10 | Impact of independent reservoirs on the quantum Zeno and anti-Zeno effects | In this paper, we look into what happens to a quantum system under repeated
measurements if it interacts with two independent reservoirs. In particular, we
look at the behavior of a two-level system interacting with reservoirs
consisting of harmonic oscillators. The interaction with one reservoir is weak
with a dissipa... | 2012.05574v1 |
2020-12-12 | Chirality-driven delocalization in disordered waveguide-coupled quantum arrays | We study theoretically the competition between directional asymmetric
coupling and disorder in a one-dimensional array of quantum emitters chirally
coupled through a waveguide mode. Our calculation reveals highly nontrivial
phase diagram for the eigenstates spatial profile, nonmonotonously depending on
the disorder and... | 2012.06886v2 |
2020-12-26 | Optimization of telescope focal ratios for MLA-fiber coupled Integral Field Units | We have developed an analytic model for generic image transfer using
microlens-coupled fibers to determine the telescope input beam speed that
optimizes the lenslet clear aperture and minimizes fiber focal-ratio
degradation. Assuming fibers are fed at f/3.5 by the lenslets, our study shows
that f/11 is the optimum tele... | 2012.13704v1 |
2020-12-27 | Microwave spectroscopy of spin-orbit coupled states: energy detuning versus interdot coupling modulation | We study the AC field induced current peaks of a spin blockaded double
quantum dot with spin-orbit interaction. The AC field modulates either the
interdot tunnel coupling or the energy detuning, and we choose the AC field
frequency range to induce two singlet-triplet transitions giving rise to two
current peaks. We sho... | 2012.13914v1 |
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