publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2018-04-23 | Strong-coupling theory of counterions between symmetrically charged walls: from crystal to fluid phases | We study thermal equilibrium of classical pointlike counterions confined
between symmetrically charged walls at distance $d$. At very large couplings
when the counterion system is in its crystal phase, a harmonic expansion of
particle deviations is made around the bilayer positions, with a free lattice
parameter determ... | 1804.08459v1 |
2018-11-06 | Measurement of the Triple Higgs Coupling at a HE-LHC | The currently unmeasured triple Higgs coupling is one of the strong
motivations for future physics programs at the LHC and beyond. A sufficiently
precise measurement can lead to qualitative changes in our understanding of
electroweak symmetry breaking and the cosmological history of the Higgs
potential. As such, the qu... | 1811.02572v2 |
2018-11-06 | Angular reduction in multiparticle matrix elements | A general method for the reduction of coupled spherical harmonic products is
presented. When the total angular coupling is zero, the reduction leads to an
explicitly real expression in the scalar products within the unit vector
arguments of the spherical harmonics. For non-scalar couplings, the reduction
gives Cartesia... | 1811.02671v2 |
2018-11-08 | Enhanced collective Purcell effect of coupled quantum emitter systems | Cavity-embedded quantum emitters show strong modifications of free space
radiation properties such as an enhanced decay known as the Purcell effect. The
central parameter is the cooperativity $C$, the ratio of the square of the
coherent cavity coupling strength over the product of cavity and emitter decay
rates. For a ... | 1811.03442v2 |
2018-11-11 | Two-photon blockade in a cascaded cavity-quantum-electrodynamics system | We investigate theoretically the model of a cavity-quantum-electrodynamics
(QED) system that consists of two two-level atoms coupled to a single-mode
cavity in the weak coupling regime, where the system is driven by quantum
light. The dynamics behavior of the entire system is tackled in the framework
of a cascaded quan... | 1811.04405v1 |
2018-11-12 | Fingerprinting the Top quark FCNC via anomalous $Ztq$ couplings at the LHeC | A study of the top quark \emph{Flavour Changing Neutral Current} (FCNC)
through $Z$-boson has been performed in the proposed future $e^-p$ collider for
the energy, $E_{e(p)} = 60~(7000)$~GeV. We considered an effective theory where
the anomalous FCNC couplings are of vector and tensor nature. The effect of
these coupli... | 1811.04681v3 |
2018-11-19 | Efficient Channel Model for Homogeneous Weakly Coupled Multicore Fiber | To analyze a homogeneous weakly coupled multicore fiber (WC-MCF) based
transmission system via simulation, we propose an efficient (fast and accurate)
WC-MCF's channel model, which can describe the propagation effects including
attenuation, walk-off, chromatic dispersion, self-phase modulation (SPM), and
especially the... | 1811.07666v1 |
2018-11-23 | Deformations of the circular Wilson loop and spectral (in)dependence | In this paper we study the expectation value of deformations of the circular
Wilson loop in ${\cal N}=4$ super Yang-Mills theory. The leading order
deformation, known as the Bremsstrahlung function, can be obtained exactly from
supersymmetric localization, so our focus is on deformations at higher orders.
We find simpl... | 1811.09638v2 |
2018-11-28 | The quantum Zeno and anti-Zeno effects: from weak to strong system-environment coupling | By repeatedly measuring a quantum system, the evolution of the system can be
slowed down (the quantum Zeno effect) or sped up (quantum anti-Zeno effect). We
study these effects for a single two-level system coupled to a collection of
harmonic oscillators. Previously, such systems have been studied in both the
weak and ... | 1811.11520v1 |
2018-11-29 | Electromagnetic coupling of twisted multi-filament superconducting tapes in a ramped magnetic field | We investigate theoretically the magnetization loss and electromagnetic
coupling of twisted multi-filament superconducting (SC) tapes in a ramped
magnetic field. Based on the two-dimensional reduced Faraday--Maxwell equation
for a tape surface obtained with a thin-sheet approximation, we simulate
numerically the power ... | 1811.11916v2 |
2018-11-29 | Staggered ordered phases in the three-orbital Hubbard model | We study ordered phases with broken translational symmetry in the half-filled
three-orbital Hubbard model with antiferromagnetic Hund coupling by means of
dynamical mean-field theory (DMFT) and continuous-time quantum Monte Carlo
simulations. The stability regions of the antiferro-orbital (AFO),
antiferro-magnetic (AFM... | 1811.12538v1 |
2010-05-17 | Electronic structure and magnetic state of transuranium metals under pressure | Electronic structure of bcc Np, fcc Pu, Am, and Cm pure metals under pressure
has been investigated employing the LDA+U method with spin-orbit coupling
(LDA+U+SO). Magnetic state of the actinide ions was analyzed in both LS and jj
coupling schemes to reveal the applicability of corresponding coupling bases.
It was demo... | 1005.2851v1 |
2010-05-17 | Vortex matter in mesoscopic two-gap superconducting disks: influence of Josephson and magnetic coupling | The effects of the coupling between two electronic condensates in two-gap
mesoscopic superconductors are studied within the Ginzburg-Landau theory using
a finite difference technique. In applied magnetic field, we derive the
dependency of the size of the vortex on the sample size and the strength of the
Josephson coupl... | 1005.2921v1 |
2010-05-17 | Size-dependence of Strong-Coupling Between Nanomagnets and Photonic Cavities | The coherent dynamics of a coupled photonic cavity and a nanomagnet is
explored as a function of nanomagnet size. For sufficiently strong coupling
eigenstates involving highly entangled photon and spin states are found, which
can be combined to create coherent states. As the size of the nanomagnet
increases its couplin... | 1005.3068v1 |
2010-05-18 | Nanomechanical effects in an Andreev quantum dot | We consider a quantum dot with mechanical degrees of freedom which is coupled
to superconducting electrodes. A Josephson current is generated by applying a
phase difference. In the absence of coupling to vibrations, this setup was
previously proposed as a detector of magnetic flux and we wish here to address
the effect... | 1005.3174v2 |
2013-08-02 | Higgs Couplings in Composite Models | We study Higgs couplings in the composite Higgs model based on the coset
SO(5)/SO(4). We show that the couplings to gluons and photons are insensitive
to the elementary-composite mixings and thus not affected by light fermionic
resonances. Moreover, at leading order in the mixings the Higgs couplings to
tops and gluons... | 1308.0559v2 |
2013-08-05 | Coleman-Weinberg Higgs | We discuss an extension of the standard model by fields not charged under
standard model gauge symmetry in which the electroweak symmetry breaking is
driven by the Higgs quartic coupling itself without the need for a negative
mass term in the potential. This is achieved by a scalar field S with a large
coupling to the ... | 1308.0891v2 |
2013-08-05 | Decoherence in a Pair of Long-Lived Cooper-Pair Boxes | We have investigated the decoherence of quantum states in two Al/AlOx/Al
Cooper-pair boxes coupled to lumped element superconducting LC resonators. At
25 mK, the first qubit had an energy relaxation time T1 that varied from 30 us
to 200 us between 4 and 8 GHz and displayed an inverse correlation between T1
and the coup... | 1308.1043v2 |
2013-08-06 | Chirality from interfacial spin-orbit coupling effects in magnetic bilayers | As nanomagnetic devices scale to smaller sizes, spin-orbit coupling due to
the broken structural inversion symmetry at interfaces becomes increasingly
important. Here we study interfacial spin-orbit coupling effects in magnetic
bilayers using a simple Rashba model. The spin-orbit coupling introduces
chirality into the ... | 1308.1198v2 |
2013-08-08 | Dynamics of a two-level system under the simultaneous influence of a spin bath and a boson bath | We study dynamics of a two-level system coupled simultaneously to a pair of
dissimilar reservoirs, namely, a spin bath and a boson bath, which are
connected via finite interbath coupling. It is found that the steady-state
energy transfer in the two-level system increases with its coupling to the spin
bath while optimal... | 1308.1764v1 |
2013-08-08 | Multi-stabilities and symmetry-broken one-colour and two-colour states in closely coupled single-mode lasers | We theoretically investigate the dynamics of two mutually coupled identical
single-mode semi-conductor lasers. For small separation and large coupling
between the lasers, symmetry-broken one-colour states are shown to be stable.
In this case the light output of the lasers have significantly different
intensities while ... | 1308.1850v2 |
2013-08-09 | Chern-Simons theory coupled to bifundamental scalars | We study the three-dimensional theory of two Chern-Simons gauge fields
coupled to a scalar field in the bifundamental representation of the $SU(N)_k
\times SU(M)_{-k}$ gauge group. At small but fixed $M \ll N$, this system
approaches the theory of a Chern-Simons field coupled to fundamental matter,
conjectured to be du... | 1308.2077v2 |
2013-08-09 | Tunable Coupling of Two-Dimensional Superconductors in Bilayer SrTiO3 Heterostructures | Interlayer coupling effects between high mobility two-dimensional
superconductors are studied in bilayer delta-doped SrTiO3 heterostructures. By
tuning the undoped SrTiO3 spacer layer between the dopant planes, clear tunable
coupling is demonstrated in the variation of the sheet carrier density, Hall
mobility, supercon... | 1308.2215v1 |
2013-08-12 | Electron Spin Resonance in Quasi-One-Dimensional Quantum Antiferromagnets: Relevance of Weak Interchain Interactions | We discuss universal features on the electron spin resonance (ESR) of a
temperature-induced Tomonaga-Luttinger liquid phase in a wide class of weakly
coupled $S=1/2$ antiferromagnetic spin chains such as spin ladders, spin tubes
and three-dimensionally coupled spin chains. We show that the ESR linewidth of
various coup... | 1308.2714v2 |
2013-08-13 | Light-matter decoupling in the deep strong coupling regime: The breakdown of the Purcell effect | Improvements both in the photonic confinement and in the emitter design have
led to a steady increase in the strength of the light-matter coupling in cavity
quantum electrodynamics experiments. This has allowed to access
interaction-dominated regimes in which the state of the system can only be
described in terms of mi... | 1308.2812v2 |
2013-08-24 | Determining Top Quark Couplings at the LHC: Snowmass White Paper | Top quarks are a prime system for hunting for new physics. Nonetheless, two
decades on from their discovery few of their couplings have been measured to
high precision. We present an overview of current determinations and the
expected sensitivities with 300 fb-1 and 3000 fb-1 of 14 TeV LHC data. In
addition to direct l... | 1308.5274v2 |
2013-08-28 | Oscillation death in diffusively coupled oscillators by local repulsive link | A death of oscillation is reported in a network of coupled synchronized
oscillators in presence of additional repulsive coupling. The repulsive link
evolves as an averaging effect of mutual interaction between two neighboring
oscillators due to a local fault and the number of repulsive links grows in
time when the deat... | 1308.6076v1 |
2013-08-29 | Efficient uncertainty propagation for network multiphysics systems | We consider a multiphysics system with multiple component models coupled
together through network coupling interfaces, i.e., a handful of scalars. If
each component model contains uncertainties represented by a set of parameters,
a straightfoward uncertainty quantification (UQ) study would collect all
uncertainties int... | 1308.6520v1 |
2014-03-05 | Coherent coupling of molecular resonators with a micro-cavity mode | The optical hybridization of the electronic states in strongly coupled
molecule-cavity systems have revealed unique properties such as lasing, room
temperature polariton condensation, and the modification of excited electronic
landscapes involved in molecular isomerization. Here we show that molecular
vibrational modes... | 1403.1050v2 |
2014-03-05 | SYM, Chern-Simons, Wess-Zumino Couplings and their higher derivative corrections in IIA Superstring theory | We find the entire form of the amplitude of two fermion strings (with
different chirality), a massless scalar field and one closed string
Ramond-Ramond (RR) in IIA superstring theory which is different from its IIB
one. We make use of a very particular gauge fixing and explore several new
couplings in IIA. All infinite... | 1403.1238v3 |
2014-03-06 | The evolution of magnetic structure driven by a synthetic spin-orbit coupling in two-component Bose-Hubbard model | We study the evolution of magnetic structure driven by a synthetic spin-orbit
coupling in a one-dimensional two-component Bose-Hubbard model. In addition to
the Mott insulator-superfluid transition, we found in Mott insulator phases a
transition from a gapped ferromagnetic phase to a gapless chiral phase by
increasing ... | 1403.1316v2 |
2014-03-07 | Multifunctional Magnetoelectric Materials for Device Applications | Mutiferroics are a novel class of next generation multifunctional materials,
which display simultaneous magnetic spin, electric dipole, and ferroelastic
ordering, and have drawn increasing interest due to their multi-functionality
for a variety of device applications. Since single-phase materials exist rarely
in nature... | 1403.1838v1 |
2014-03-11 | Renormalization of anticrossings in interacting quantum wires with Rashba and Dresselhaus spin-orbit couplings | We discuss how electron-electron interactions renormalize the spin-orbit
induced anticrossings between different subbands in ballistic quantum wires.
Depending on the ratio of spin-orbit coupling and subband spacing,
electron-electron interactions can either increase or decrease anticrossing
gaps. When the anticrossing... | 1403.2759v2 |
2014-03-13 | Coupling theory of emergent spin electromagnetic field and electromagnetic field | In ferromagnetic metals, an effective electromagnetic field which couples to
conduction electron spin is induced by the sd exchange interaction. We
investigate how this effective field, spin electromagnetic field, interacts
with the ordinary electromagnetic field by deriving an effective Hamiltonian
based on the path-i... | 1403.3214v3 |
2014-03-13 | Amplitude death in coupled robust-chaos oscillators | We investigate the synchronization behavior of a system of globally coupled,
continuous-time oscillators possessing robust chaos. The local dynamics
corresponds to the Shimizu-Morioka model where the occurrence of robust chaos
in a region of its parameter space has been recently discovered. We show that
the global coup... | 1403.3456v3 |
2014-03-16 | A note on optimal regularity and regularizing effects of point mass coupling for a heat-wave system | We consider a coupled $1D$ heat-wave system which serves as a simplified
fluid-structure interaction problem. The system is coupled in two different
ways: the first, when the interface does not have mass and the second, when the
interface does have mass. We prove an optimal regularity result in Sobolev
spaces for both ... | 1403.3965v3 |
2014-03-17 | Variational Monte Carlo Method for Electron-Phonon Coupled Systems | We develop a variational Monte Carlo (VMC) method for electron-phonon coupled
systems. The VMC method has been extensively used for investigating strongly
correlated electrons over the last decades. However, its applications to
electron-phonon coupled systems have been severely restricted because of its
large Hilbert s... | 1403.4150v2 |
2014-03-20 | Thermal property in Brownian motion of a particle coupled to vacuum fluctuations | We investigate Brownian motions of a particle coupled to vacuum fluctuations
of a quantum field. The Unruh effect predicts that an observer in an
accelerated motion sees the Minkowski vacuum as thermally excited. This
addresses the problem of whether a thermal property appears in a perturbative
random motion of a parti... | 1403.5028v1 |
2014-03-28 | Reduction of Couplings in Quantum Field Theories with applications in Finite Theories and the MSSM | We apply the method of reduction of couplings in a Finite Unified Theory and
in the MSSM. The method consists on searching for renormalization group
invariant relations among couplings of a renormalizable theory holding to all
orders in perturbation theory. It has a remarkable predictive power since, at
the unification... | 1403.7384v1 |
2014-03-29 | Information Filtering on Coupled Social Networks | In this paper, based on the coupled social networks (CSN), we propose a
hybrid algorithm to nonlinearly integrate both social and behavior information
of online users. Filtering algorithm based on the coupled social networks,
which considers the effects of both social influence and personalized
preference. Experimental... | 1403.7595v1 |
2017-01-04 | Inverting the coupling of the signed Gausssian free field with a loop soup | Lupu introduced a coupling between a random walk loop-soup and a Gaussian
free field, where the sign of the field is constant on each cluster of loops.
This coupling is a signed version of isomorphism theorems relating the square
of the GFF to the occupation field of Markovian trajectories. His construction
starts with... | 1701.01092v2 |
2017-01-07 | Chiral Supersolid in Spin-Orbit-Coupled Bose Gases with Soft-Core Long-Range Interactions | Chirality represents a kind of symmetry breaking characterized by the
noncoincidence of an object with its mirror image and has been attracting
intense attention in a broad range of scientific areas. The recent realization
of spin-orbit coupling in ultracold atomic gases provides a new perspective to
study quantum stat... | 1701.01869v4 |
2017-01-09 | Large $N$ correlation functions in $\mathcal{N}=2$ superconformal quivers | Using supersymmetric localization, we consider four-dimensional
$\mathcal{N}=2$ superconformal quiver gauge theories obtained from
$\mathbb{Z}_n$ orbifolds of $\mathcal{N}=4$ Super Yang-Mills theory in the
large $N$ limit at weak coupling. In particular, we show that: 1) The partition
function for arbitrary couplings c... | 1701.02315v1 |
2017-01-10 | Coupling quantum emitters in 2D materials with tapered fibers | Realization of integrated photonic circuits on a single chip requires
controlled manipulation and integration of solid-state quantum emitters with
nanophotonic components. Previous works focused on emitters embedded in a
three-dimensional crystals -- such as nanodiamonds or quantum dots. In
contrast, in this work we de... | 1701.02696v1 |
2017-01-11 | On the theory of coupled modes in optical cavity-waveguide structures | Light propagation in systems of optical cavities coupled to waveguides can be
conveniently described by a general rate equation model known as (temporal)
coupled mode theory (CMT). We present an alternative derivation of the CMT for
optical cavity-waveguide structures, which explicitly relies on the treatment
of the ca... | 1701.02929v1 |
2017-01-16 | Exploring pseudo-Nambu--Goldstone bosons by stimulated photon colliders in the mass range 0.1~eV to 10~keV | Searching for pseudo-Nambu--Goldstone bosons (pNGBs) in weak-coupling domains
is crucial for understanding the dark components in the universe. We propose
searching for pNGBs coupled to two photons in the mass range from 0.1~eV to
10~keV. This could provide opportunities to test string-theory-based pNGBs
beyond the GUT... | 1701.04282v1 |
2017-01-16 | The Velocity of the Propagating Wave for Spatially Coupled Systems with Applications to LDPC Codes | We consider the dynamics of message passing for spatially coupled codes and,
in particular, the set of density evolution equations that tracks the profile
of decoding errors along the spatial direction of coupling. It is known that,
for suitable boundary conditions and after a transient phase, the error profile
exhibit... | 1701.04318v1 |
2017-01-16 | Macroscopic Models for Networks of Coupled Biological Oscillators | The study of synchronization in populations of coupled biological oscillators
is fundamental to many areas of biology to include neuroscience, cardiac
dynamics and circadian rhythms. Studying these systems may involve tracking the
concentration of hundreds of variables in thousands of individual cells
resulting in an e... | 1701.04404v1 |
2017-01-19 | Intertwining of the Wright-Fisher diffusion | It is known that the time until a birth and death process reaches a certain
level is distributed as a sum of independent exponential random variables.
Diaconis, Miclo and Swart gave a probabilistic proof of this fact by coupling
the birth and death process with a pure birth process such that the two
processes reach the... | 1701.05418v1 |
2017-01-19 | Indirect controllability of some linear parabolic systems of m equations with m-1 controls involving coupling terms of zero or first order | This paper is devoted to the study of the null and approximate
controllability for some classes of linear coupled parabolic systems with less
controls than equations. More precisely, for a given bounded domain in R^N, we
consider a system of m linear parabolic equations (m > 2) with coupling terms
of first and zero ord... | 1701.05555v1 |
2017-01-23 | Proving uniformity and independence by self-composition and coupling | Proof by coupling is a classical proof technique for establishing
probabilistic properties of two probabilistic processes, like stochastic
dominance and rapid mixing of Markov chains. More recently, couplings have been
investigated as a useful abstraction for formal reasoning about relational
properties of probabilisti... | 1701.06477v2 |
2017-01-20 | Dynamics of oscillators globally coupled via two mean fields | Many studies of synchronization properties of coupled oscillators, based on
the classical Kuramoto approach, focus on ensembles coupled via a mean field.
Here we introduce a setup of Kuramoto-type phase oscillators coupled via two
mean fields. We derive stability properties of the incoherent state and find
traveling wa... | 1701.06499v2 |
2017-01-27 | Level crossings induced by a longitudinal coupling in the transverse field Ising chain | We study the effect of antiferromagnetic longitudinal coupling on the
one-dimensional transverse field Ising model with nearest-neighbour couplings.
In the topological phase where, in the thermodynamic limit, the ground state is
twofold degenerate, we show that, for a finite system of N sites, the
longitudinal coupling... | 1701.08057v2 |
2017-01-28 | Constraining capability of $Z γh$ production at the ILC | Higgs boson couplings with gauge bosons are probed through $e^-e^+
\rightarrow Z \gamma h$ in an effective Lagrangian framework. For this study
the beam polarization facility at the ILC along with the typical center-of-mass
energy of 500 GeV is considered. The reach of the ILC with an integrated
luminosity of 300 fb$^{... | 1701.08250v2 |
2017-01-30 | Quantum magnetomechanics: towards the ultra-strong coupling regime | In this paper we investigate a hybrid quantum system comprising a mechanical
oscillator coupled via magnetic induced electromotive force to an $LC$
resonator. We derive the Lagrangian and Hamiltonian for this system and find
that the interaction can be described by a charge-momentum coupling with a
strength that has a ... | 1701.08482v2 |
2018-05-01 | Symmetry and symmetry breaking in coupled oscillator communities | With the recent development of analytical methods for studying the collective
dynamics of coupled oscillator systems, the dynamics of communities of coupled
oscillators have received a great deal of attention in the nonlinear dynamics
community. However, the majority of these works treat systems with a number of
symmet... | 1805.00303v3 |
2018-05-02 | Mie-excitons: understanding strong coupling in dielectric nanoparticles | We theoretically analyse the hybrid Mie-exciton optical modes arising from
the strong coupling of excitons in organic dyes or transition-metal
dichalcogenides with the Mie resonances of high-index dielectric nanoparticles.
Detailed analytic calculations show that silicon--exciton core--shell
nanoparticles are character... | 1805.00788v1 |
2018-05-02 | Transconducting transition for a dynamic boundary coupled to several Luttinger liquids | We study a dynamic boundary, e.g. a mobile impurity, coupled to N independent
Tomonaga-Luttinger liquids (TLLs) each with interaction parameter K. We
demonstrate that for N>2 there is a quantum phase transition at K>1/2, where
the TLL phases lock together at the particle position, resulting in a non-zero
transconductan... | 1805.00996v2 |
2018-05-04 | Pre- and post-selected measurements with coupling-strength-dependent modulation | Pre- and post-selected (PPS) measurement, especially the weak PPS
measurement, is a useful protocol for amplifying small physical parameters.
However, it is difficult to retain both the attainable highest measurement
sensitivity and precision with the increase of the parameter to be measured.
Here, a modulated PPS meas... | 1805.01893v1 |
2018-05-06 | Stability of Infinite Systems of Coupled Oscillators Via Random Walks on Weighted Graphs | Weakly coupled oscillators are used throughout the physical sciences,
particularly in mathematical neuroscience to describe the interaction of
neurons in the brain. Systems of weakly coupled oscillators have a well-known
decomposition to a canonical phase model which forms the basis of our
investigation in this work. P... | 1805.02212v1 |
2018-05-10 | Dynamics of the one-dimensional Anderson insulator coupled to various bosonic baths | We study a particle which propagates in a one dimensional strong random
potential and is coupled to a bosonic bath. We independently test various
properties of bosons (hopping term, hard-core effects and generic boson-boson
interaction) and show that bosonic itineracy is the essential ingredient
governing the dynamics ... | 1805.03877v1 |
2018-05-11 | Gravitational waves from gauge preheating | We study gravitational wave production during Abelian gauge-field preheating
following inflation. We consider both scalar and pseudoscalar inflaton models
coupled directly to Abelian gauge fields via either a dilatonic coupling to the
gauge-field kinetic term or an axial coupling to a Chern-Simons term. In both
cases g... | 1805.04550v2 |
2018-05-16 | Gauge ambiguities imply Jaynes-Cummings physics remains valid in ultrastrong coupling QED | Ultrastrong-coupling between two-level systems and radiation is important for
both fundamental and applied quantum electrodynamics (QED). Such regimes are
identified by the breakdown of the rotating-wave approximation, which applied
to the quantum Rabi model (QRM) yields the apparently less fundamental
Jaynes-Cummings ... | 1805.06356v3 |
2018-05-20 | Probing anomalous $Wtb$ couplings at the LHC in single top quark production through $t$-channel | We study the sensitivity of certain observables to the anomalous right
tensorial coupling in single top production at the LHC at $\sqrt{s}=13 \text{
TeV}$. The observables consist of asymmetries constructed from the energy and
angles of the decay products of the top quark produced in single top production
through $t$-c... | 1805.07763v2 |
2018-05-21 | Bulk and edge-state arcs in non-hermitian coupled-resonator arrays | We describe the formation of bulk and edge arcs in the dispersion relation of
two-dimensional coupled-resonator arrays that are topologically trivial in the
hermitian limit. Each resonator provides two asymmetrically coupled internal
modes, as realized in noncircular open geometries, which enables the system to
exhibit... | 1805.08161v1 |
2018-05-23 | Two-Photon Rabi Splitting in a Coupled System of a Nanocavity and Exciton Complexes | Two-photon Rabi splitting in a cavity-dot system provides a basis for
multi-qubit coherent control in quantum photonic network. Here we report on
two-photon Rabi splitting in a strongly coupled cavity-dot system. The quantum
dot was grown intentionally large in size for large oscillation strength and
small biexciton bi... | 1805.09184v1 |
2018-05-24 | Particle decay in expanding Friedmann-Robertson-Walker universes | The lack of energy conservation introduces new particle processes in curved
spacetime that are forbidden in flat space. Therefore one has to be very
cautious about using the results calculated in Minkowskian space in early
universe applications. This is true for particle decay rates in particular,
which need to be calc... | 1805.09620v1 |
2018-05-25 | Bistability of a slow mechanical oscillator coupled to a laser-driven two-level system | It has been recently proposed that single molecule spectroscopy could be
employed to detect the motion of nano-mechanical resonators. Estimates of the
coupling constant (g) between the molecular two-level system and the oscillator
indicate that it can reach values much larger than the mechanical resonating
pulsation (o... | 1805.10155v1 |
2018-05-25 | Mode localization and sensitivity in weakly coupled resonators | Localization of normal modes is used in recent microelectromechanical systems
(MEMS) technologies with orders of magnitude improvements in sensitivity. A
pair of eigenvalues veer, or avoid crossing each other, as a single parameter
of a vibrating system is varied. While it is well-known that the sensitivity
($s$) of mo... | 1805.10380v1 |
2018-05-28 | Tunable coupling between a superconducting resonator and an artificial atom | Coherent manipulation of a quantum system is one of the main themes in
current physics researches. In this work, we design a circuit QED system with a
tunable coupling between an artificial atom and a superconducting resonator
while keeping the cavity frequency and the atomic frequency invariant. By
controlling the tim... | 1805.10794v2 |
2018-05-31 | Interaction-induced time-symmetry breaking in driven quantum oscillators | We study parametrically driven quantum oscillators and show that, even for
weak coupling between the oscillators, they can exhibit various many-body
states with broken time-translation symmetry. In the quantum-coherent regime,
the symmetry breaking occurs via a nonequilibrium quantum phase transition. For
dissipative o... | 1805.12545v1 |
2008-07-22 | Influence of an inter-chain coupling on spiral ground-state correlations in frustrated spin-1/2 J1-J2 Heisenberg chains | We investigate the influence of an inter-chain coupling on the spiral ground
state correlations of a spin-1/2 Heisenberg model consisting of a
two-dimensional array of coupled chains with nearest (J1) and frustrating
next-nearest neighbor (J2) in-chain exchange couplings. Using the
coupled-cluster method we calculate t... | 0807.3431v2 |
2008-07-22 | Stability of the curvature perturbation in dark sectors' mutual interacting models | We consider perturbations in a cosmological model with a small coupling
between dark energy and dark matter. We prove that the stability of the
curvature perturbation depends on the type of coupling between dark sectors.
When the dark energy is of quintessence type, if the coupling is proportional
to the dark matter en... | 0807.3471v2 |
2008-07-24 | Phase diagram of a generalized Winfree model | We study the phase diagram of a generalized Winfree model. The modification
is such that the coupling depends on the fraction of synchronized oscillators,
a situation which has been noted in some experiments on coupled Josephson
junctions and mechanical systems. We let the global coupling k be a function of
the Kuramot... | 0807.3823v1 |
2009-12-14 | Nuclear physics from strong coupling QCD | The strong coupling limit (beta_gauge = 0) of QCD offers a number of
remarkable research possibilities, of course at the price of large lattice
artifacts. Here, we determine the complete phase diagram as a function of
temperature T and baryon chemical potential mu_B, for one flavor of staggered
fermions in the chiral l... | 0912.2524v1 |
2011-11-03 | Generation of scale invariant density perturbations in a conformally invariant Inert Higgs doublet model | If a Higgs field is conformally coupled to gravity, then it can give rise to
the scale invariant density perturbations. We make use of this result in a
realistic inert Higgs doublet model, where we have a pair of Higgs doublets
conformally coupled to the gravity in the early universe. The perturbation of
the inert Higg... | 1111.0799v1 |
2011-11-09 | Spin chains for robust state transfer: Modified boundary couplings vs. completely engineered chains | Quantum state transfer in the presence of noise is one of the main challenges
in building quantum computers. We compare the quantum state transfer properties
for two classes of qubit chains under the influence of static randomness. In
fully engineered chains all nearest-neighbor couplings are tuned in such a way
that a... | 1111.2238v2 |
2011-11-10 | From Luttinger liquid to non-Abelian quantum Hall states | We formulate a theory of non-Abelian fractional quantum Hall states by
considering an anisotropic system consisting of coupled, interacting one
dimensional wires. We show that Abelian bosonization provides a simple
framework for characterizing the Moore Read state, as well as the more general
Read Rezayi sequence. This... | 1111.2617v1 |
2011-11-16 | Effect of discrete time observations on synchronization in Chua model and applications to data assimilation | Recent studies show indication of the effectiveness of synchronization as a
data assimilation tool for small or meso-scale forecast when less number of
variables are observed frequently. Our main aim here is to understand the
effects of changing observational frequency and observational noise on
synchronization and pre... | 1111.3731v1 |
2011-11-17 | Nonlinear photon transport in a semiconductor waveguide-cavity system containing a single quantum dot: Anharmonic cavity-QED regime | We present a semiconductor master equation technique to study the
input/output characteristics of coherent photon transport in a semiconductor
waveguide-cavity system containing a single quantum dot. We use this approach
to investigate the effects of photon propagation and anharmonic cavity-QED for
various dot-cavity i... | 1111.3995v2 |
2011-11-18 | The Critical Coupling Likelihood Method: A new approach for seamless integration of environmental and operating conditions of gravitational wave detectors into gravitational wave searches | Any search effort for gravitational waves (GW) using interferometric
detectors like LIGO needs to be able to identify if and when noise is coupling
into the detector's output signal. The Critical Coupling Likelihood (CCL)
method has been developed to characterize potential noise coupling and in the
future aid GW search... | 1111.4516v4 |
2011-11-29 | Temperature-dependent Raman study of CeFeAsO0.9F0.1 Superconductor: Crystal field excitations, phonons and their coupling | We report temperature-dependent Raman spectra of CeFeAsO0.9F0.1 from 4 K to
300 K in spectral range of 60 to 1800 cm-1 and interpret them using estimates
of phonon frequencies obtained from first-principles density functional
calculations. We find evidence for a strong coupling between the phonons and
crystal field exc... | 1111.6707v1 |
2011-11-30 | Quantifying the dynamics of coupled networks of switches and oscillators | Complex network dynamics have been analyzed with models of systems of coupled
switches or systems of coupled oscillators. However, many complex systems are
composed of components with diverse dynamics whose interactions drive the
system's evolution. We, therefore, introduce a new modeling framework that
describes the d... | 1111.7243v1 |
2012-01-09 | Room temperature terahertz polariton emitter | The strong-coupling regime between an electronic transition and the photonic
mode of a optical resonator manifests itself in the lifting of the degeneracy
between the two modes and the creation of two polariton states with mixed
optical and electronic character. This phenomenon has been studied in atoms,
excitons in se... | 1201.2094v1 |
2012-01-14 | Spatially Coupled Ensembles Universally Achieve Capacity under Belief Propagation | We investigate spatially coupled code ensembles. For transmission over the
binary erasure channel, it was recently shown that spatial coupling increases
the belief propagation threshold of the ensemble to essentially the maximum
a-priori threshold of the underlying component ensemble. This explains why
convolutional LD... | 1201.2999v1 |
2012-01-17 | Yukawa couplings and masses of non-chiral states for the Standard Model on D6-branes on T6/Z6' | The perturbative leading order open string three-point couplings for the
Standard Model with hidden USp(6) on fractional D6-branes on T6/Z6' from
arXiv:0806.3039 [hep-th], arXiv:0910.0843 [hep-th] are computed. Physical
Yukawa couplings consisting of holomorphic Wilsonian superpotential terms times
a non-holomorphic pr... | 1201.3604v2 |
2012-01-26 | A modified theory of gravity with torsion and its applications to cosmology and particle physics | In this paper we consider the most general least-order derivative theory of
gravity in which not only curvature but also torsion is explicitly present in
the Lagrangian, and where all independent fields have their own coupling
constant: we will apply this theory to the case of ELKO fields, which is the
acronym of the G... | 1201.5498v3 |
2012-01-28 | Exact solutions of coupled Liénard-type nonlinear systems using factorization technique | General solutions of nonlinear ordinary differential equations (ODEs) are in
general difficult to find although powerful integrability techniques exist in
the literature for this purpose. It has been shown that in some scalar cases
particular solutions may be found with little effort if it is possible to
factorize the ... | 1201.5931v1 |
2012-01-30 | Electron-phonon Coupling on the Surface of the Topological Insulator Bi2Se3: Determined from Surface Phonon Dispersion Measurements | In this letter we report measurements of the coupling between Dirac fermion
quasiparticles (DFQs) and phonons on the (001) surface of the strong
topological insulator Bi2Se3. While most contemporary investigations of this
coupling have involved examining the temperature dependence of the DFQ
self-energy via angle-resol... | 1201.6346v2 |
2012-04-02 | Numerical computation of the beta function of large N SU(N) gauge theory coupled to an adjoint Dirac fermion | We use a single site lattice in four dimensions to study the scaling of large
N Yang-Mills field coupled to a single massless Dirac fermion in the adjoint
representation. We use the location of the strong to weak coupling transition
defined through the eigenvalues of the folded Wilson loop operator to set a
scale. We d... | 1204.0331v2 |
2012-04-09 | Spin-Orbit Coupled Degenerate Fermi Gases | Spin-orbit coupling plays an increasingly important role in the modern
condensed matter physics. For instance, it gives birth to topological
insulators and topological superconductors. Quantum simulation of spin-orbit
coupling using ultracold Fermi gases will offer opportunities to study these
new phenomena in a more c... | 1204.1887v1 |
2012-04-08 | Coupling between a deuteron and a lattice | We recently put forth a new fundamental lattice Hamiltonian based on an
underlying picture of electrons and deuterons as elementary Dirac particles.
Within this model there appears a term in which lattice vibrations are coupled
to internal nuclear transitions. This is interesting as it has the potential to
provide a co... | 1204.2159v1 |
2012-04-17 | Phase transition in crowd synchrony of delay-coupled multilayer laser networks | An analogy between crowd synchrony and multi-layer neural network
architectures is proposed. It indicates that many non-identical dynamical
elements (oscillators) communicating indirectly via a few mediators (hubs) can
synchronize when the number of delayed couplings to the hubs or the strength of
the couplings is larg... | 1204.3712v1 |
2012-04-17 | A nanomechanical resonator coupled linearly via its momentum to a quantum point contact | We use a Born-Markov approximated master equation approach to study the
symmetrized-in-frequency current noise spectrum and the oscillator steady state
of a nanoelectromechanical system where a nanoscale resonator is coupled
linearly via its momentum to a quantum point contact (QPC). Our current noise
spectra exhibit c... | 1204.3871v1 |
2013-09-03 | The Universe as a Set of Topological Fluids with Hierarchy and Fine Tuning of Coupling Constants in Terms of Graph Manifolds | The hierarchy and fine tuning of the gauge coupling constants are described
on the base of topological invariants (Chern classes interpreted as filling
factors) characterizing a collection of fractional topological fluids emerging
from three dimensional graph manifolds, which play the role of internal spaces
in the Kal... | 1309.0690v2 |
2013-09-05 | Current-induced torques and interfacial spin-orbit coupling | In bilayer systems consisting of an ultrathin ferromagnetic layer adjacent to
a metal with strong spin-orbit coupling, an applied in-plane current induces
torques on the magnetization. The torques that arise from spin-orbit coupling
are of particular interest. Here, we calculate the current-induced torque in a
Pt-Co bi... | 1309.1356v1 |
2013-09-09 | Direct-coupling lensing by antisymmetric tensor monopoles | We discuss the effects of a direct coupling between a rank-two antisymmetric
tensor field and the Maxwell field. The coupling we consider leads to vacuum
birefringence, allowing us to place constraints on the magnitude of the tensor
field and the strength of its coupling to the Maxwell field via cosmological
birefringe... | 1309.2241v1 |
2013-09-10 | Collective excitations of atoms and field modes in coupled cavities | The exact solution of the system consisted from two or three q-bits doped in
coupled cavities is discussed. The problem of indistinguishable between the
excited radiators and photons is analyzed using the intrinsic symmetry of the
system. It is demonstrated that the solution is drastically simplified when the
radiators... | 1309.2419v1 |
2013-09-10 | High efficiency coupling of photon pairs in practice | Multi-photon and quantum communication experiments such as loophole-free Bell
tests and device independent quantum key distribution require entangled photon
sources which display high coupling efficiency. In this paper we put forward a
simple quantum theoretical model which allows the experimenter to design a
source wi... | 1309.2457v1 |
2013-09-12 | Searches for axions with the EDELWEISS experiment | The EDELWEISS experiment primarily aims at the direct detection of WIMPs
using germanium bolometers. It is also sensitive to the low-energy electron
recoils that would be induced by axions. We present new constraints on the
couplings of axions using data from the EDELWEISS-II experiment. Using a total
exposure of up to... | 1309.3062v1 |
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