publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2012-03-30 | Constraints on short-range spin-dependent interactions from scalar spin-spin coupling in deuterated molecular hydrogen | A comparison between existing measurements and calculations of the scalar
spin-spin interaction (J-coupling) in deuterated molecular hydrogen (HD) yields
stringent constraints on anomalous spin-dependent potentials between nucleons
at the atomic scale (${\rm \sim 1 \AA}$). The dimensionless coupling constant
$g_P^pg_P^... | 1203.6894v2 |
2012-06-05 | Early Higgs Hints for Non-Minimal Supersymmetry | We discuss the role that Higgs coupling measurements can play in
differentiating supersymmetric extensions of the Standard Model. Fitting
current LHC data to the Higgs couplings, we find that the likelihood fit shows
a preference in the direction of suppressed (enhanced) bottom (top) quark
couplings. In the minimal sup... | 1206.1058v3 |
2012-06-05 | Spin-Orbit Coupling in LaAlO$_3$/SrTiO$_3$ interfaces: Magnetism and Orbital Ordering | The combination of Rashba spin-orbit coupling and electron correlations can
induce unusual phenomena in the metallic interface between SrTiO$_3$ and
LaAlO$_3$. We consider effects of Rashba spin-orbit coupling at this interface
in the context of the recent observation of anisotropic magnetism. Firstly, we
show how Rash... | 1206.1060v2 |
2012-06-15 | How well do we need to measure Higgs boson couplings? | Most of the discussion regarding the Higgs boson couplings to Standard Model
vector bosons and fermions is presented with respect to what present and future
collider detectors will be able to measure. Here, we ask the more physics-based
question of how well do we need to measure the Higgs boson couplings? We first
pres... | 1206.3560v3 |
2012-06-21 | Momentum-resolved radio-frequency spectroscopy of ultracold atomic Fermi gases in a spin-orbit coupled lattice | We investigate theoretically momentum-resolved radio-frequency (rf)
spectroscopy of a noninteracting atomic Fermi gas in a spin-orbit coupled
lattice. This lattice configuration has been recently created at MIT [Cheuk et
al., arXiv:1205.3483] for 6Li atoms, by coupling the two hyperfine spin-states
with a pair of Raman... | 1206.4778v1 |
2012-06-28 | Lag synchronization and scaling of chaotic attractor in coupled system | We report a design of delay coupling for lag synchronization in two
unidirectionally coupled chaotic oscillators. A delay term is introduced in the
definition of the coupling to target any desired lag between the driver and the
response. The stability of the lag synchronization is ensured by using the
Hurwitz matrix st... | 1206.6723v1 |
2012-07-27 | Perturbative Critical Behavior from Spacetime Dependent Couplings | We find novel perturbative fixed points by introducing mildly
spacetime-dependent couplings into otherwise marginal terms. In
four-dimensional QFT, these are physical analogues of the small-$\epsilon$
Wilson-Fisher fixed point. Rather than considering $4-\epsilon$ dimensions, we
stay in four dimensions but introduce co... | 1207.6663v1 |
2012-08-04 | Controlling the Interlayer Coupling of Twisted Bilayer Graphene | The interlayer coupling of twisted bilayer graphene could markedly affect its
electronic band structure. A current challenge required to overcome in
experiment is how to precisely control the coupling and therefore tune the
electronic properties of the bilayer graphene. Here, we describe a facile
method to modulate the... | 1208.0903v1 |
2012-08-05 | WRF fire simulation coupled with a fuel moisture model and smoke transport by WRF-Chem | We describe two recent additions to WRF coupled with a fire spread model.
Fire propagation is strongly dependent on fuel moisture, which in turn depends
on the history of the atmosphere. We have implemented a equilibrium time-lag
model of fuel moisture driven by WRF variables. The code allows the user to
specify fuel p... | 1208.1059v2 |
2012-08-14 | Coulomb matrix elements for the impact ionization process in nanocrystals: the envelope function approach | We propose a method for calculating Coulomb matrix elements between exciton
and biexciton states in semiconductor nanocrystals based on the envelope
function formalism. We show that such a calculation requires proper treatment
of the Bloch parts of the carrier wave functions which, in the leading order,
leads to spin s... | 1208.2739v1 |
2012-08-14 | Chaos-driven dynamics in spin-orbit coupled atomic gases | The dynamics, appearing after a quantum quench, of a trapped, spin-orbit
coupled, dilute atomic gas is studied. The characteristics of the evolution is
greatly influenced by the symmetries of the system, and we especially compare
evolution for an isotropic Rashba coupling and for an anisotropic spin-orbit
coupling. As ... | 1208.2923v2 |
2012-08-23 | Directly Measuring the Tensor Structure of the Scalar Coupling to Gauge Bosons | Kinematic distributions in the decays of the newly discovered resonance to
four leptons can provide a direct measurement of the tensor structure of the
particle's couplings to gauge bosons. Even if the particle is shown to be a
parity even scalar, measuring this tensor structure is a necessary step in
determining if th... | 1208.4840v2 |
2012-08-28 | The Strong Coupling Constant from Hadron Structure Phenomenology | We present recent developments on the role of the running coupling constant
at the intersection of perturbative and nonperturbative QCD. A number of
experiments show a smooth transition from small to large scales given by the
four-momentum transfer in the reactions. This is at variance with perturbative
QCD where the r... | 1208.5636v1 |
2012-09-07 | Tate Form and Weak Coupling Limits in F-theory | We consider the weak coupling limit of F-theory in the presence of
non-Abelian gauge groups implemented using the traditional ansatz coming from
Tate's algorithm. We classify the types of singularities that could appear in
the weak coupling limit and explain their resolution. In particular, the weak
coupling limit of... | 1209.1633v1 |
2012-09-10 | Inelastic Electron Tunneling Spectroscopy for Topological Insulators | Inelastic Electron Tuneling Spectroscopy (IETS) is a powerful spectroscopy
that allows one to investigate the nature of local excitations and energy
transfer in the system of interest. We study IETS for Topological Insulators
(TI) and investigate the role of inelastic scattering on the Dirac node states
on the surface ... | 1209.2055v1 |
2012-09-28 | Mode-coupling theory and beyond: a diagrammatic approach | For almost thirty years, mode-coupling theory has been the most widely
discussed and used but also the most controversial theory of the glass
transition. In this paper we briefly review the reasons for both its popularity
and its controversy. We emphasize the need for the development of approaches
that would be able to... | 1209.6622v1 |
2012-10-04 | Effect of Monolayer Thickness Fluctuations on Coherent Exciton Coupling in Single Quantum Wells | Monolayer fluctuations in the thickness of a semiconductor quantum well (QW)
lead to three types of excitons, located in the narrower, average and thicker
regions of the QW, which are clearly resolved in optical spectra. Whether or
not these excitons are coherently coupled via Coulomb interactions is a
long-standing de... | 1210.1493v1 |
2012-10-06 | Amplitude death in networks of delay-coupled delay oscillators | Amplitude death is a dynamical phenomenon in which a network of oscillators
settles to a stable state as a result of coupling. Here, we study amplitude
death in a generalized model of delay-coupled delay oscillators. We derive
analytical results for degree homogeneous networks that show that amplitude
death is governed... | 1210.2002v1 |
2012-10-11 | The effect of a coupling field on the entanglement dynamics of a three-level atom | The effect of a coupling laser field on the entanglement of a three-level
quantum system and its spontaneous emission is investigated via reduced quantum
entropy. We consider two schemes, the upper- and lower-level couplings. By
calculating the degree of entanglement (DEM) for both systems, it is shown that
the entangl... | 1210.3179v1 |
2012-10-11 | Strange Couplings to the Higgs | We explored the coupling of strange quark to the state of mass close to 126
GeV recently observed by the ATLAS and CMS experiments at the LHC. An enhanced
coupling relative to the expectations for a SM Higgs has the effect of
increasing both the inclusive production cross section and the partial decay
width into jets. ... | 1210.3373v1 |
2012-10-22 | Fate of a Bose-Einstein Condensate in the Presence of Spin-Orbit Coupling | Intensive theoretical studies have recently predicted that a Bose-Einstein
condensate will exhibit a variety of novel properties if spin-orbit coupling is
present. However, an unambiguous fact has also been pointed out: Rashba
coupling destroys a condensate of noninteracting bosons even in high
dimensions. Therefore, a... | 1210.5853v2 |
2012-10-27 | Collective coupling of a macroscopic number of single-molecule magnets with a microwave cavity mode | We report the observation of strong coupling of a macroscopic ensemble of
~10^{16} Fe_8 molecular nanomagnets to the resonant mode of a microwave cavity.
We use millimeter-wave spectroscopy to measure the splitting of the system's
resonant frequency induced by the coupling between the spins and the cavity
mode. The mag... | 1210.7330v1 |
2012-11-08 | A hybrid quantum circuit consisting of a superconducting flux qubit coupled to both a spin ensemble and a transmission-line resonator | We propose an experimentally realizable hybrid quantum circuit for achieving
a strong coupling between a spin ensemble and a transmission-line resonator via
a superconducting flux qubit used as a data bus. The resulting coupling can be
used to transfer quantum information between the spin ensemble and the
resonator. In... | 1211.1827v2 |
2012-11-09 | Metal-insulator transition in three-band Hubbard model with strong spin-orbit interaction | Recent investigations suggest that both spin-orbit coupling and electron
correlation play very crucial roles in the $5d$ transition metal oxides. By
using the generalized Gutzwiller variational method and dynamical mean-field
theory with the hybridization expansion continuous time quantum Monte Carlo as
impurity solver... | 1211.2055v1 |
2012-11-09 | Spin-orbit Coupled Bose-Einstein Condensates in Spin-dependent Optical Lattices | We investigate the ground-state properties of spin-orbit coupled
Bose-Einstein condensates in spin-dependent optical lattices. The competition
between the spin-orbit coupling strength and the depth of the optical lattice
leads to a rich phase diagram. Without spin-orbit coupling, the spin-dependent
optical lattices sep... | 1211.2097v3 |
2012-11-26 | Radiative corrections to the Higgs boson couplings in the triplet model | We calculate a full set of one-loop corrections to the Higgs boson coupling
constants as well as the electroweak parameters. We compute the decay rate of
the standard model (SM)-like Higgs boson ($h$) into diphoton. Renormalized
Higgs couplings with the weak gauge bosons $hVV$ ($V=W$ and $Z$) and the
trilinear coupling... | 1211.6029v2 |
2012-12-01 | The case of asymptotic supersymmetry | We start a systematic investigation of the possibility to have supersymmetry
(SUSY) to be an asymptotic state of the gauge theory in the high energy (UV)
limit, due to the renormalization group running of coupling constants of the
theory. The answer on whether this situation takes place or not, can be
resolved by deali... | 1212.0126v1 |
2012-12-13 | Unification of Gauge Couplings in the Standard Model with Extra Vector-like Families | We discuss gauge coupling unification in models with additional 1 to 4
complete vector-like families, and derive simple rules for masses of
vector-like fermions required for exact gauge coupling unification. These mass
rules and the classification scheme are generalized to an arbitrary extension
of the standard model. ... | 1212.3035v2 |
2012-12-18 | Design and analysis of a Schwarz coupling method for a dimensionally heterogeneous problem | In the present work, we study and analyze an efficient iterative coupling
method for a dimensionally heterogeneous problem . We consider the case of 2-D
Laplace equation with non symmetric boundary conditions with a corresponding
1-D Laplace equation. We will first show how to obtain the 1-D model from the
2-D one by i... | 1212.4248v1 |
2012-12-27 | Dynamics of the Bianchi I model with non-minimally coupled scalar field near the singularity | Dynamical systems methods are used to study the evolution of the Bianchi I
model with a scalar field. We show that inclusion of the non-minimal coupling
term between the scalar field and the curvature changes evolution of the model
compared with the minimally coupled case. In the model with the non-minimally
coupled sc... | 1212.6408v1 |
2012-12-31 | Properties of Bose Gases with Raman-Induced Spin-Orbit Coupling | In this paper we investigate the properties of Bose gases with Raman-induced
spin-orbit(SO) coupling. It is found that the SO coupling can greatly modify
the single particle density-of-state, and thus lead to non-monotonic behavior
of the condensate depletion, the Lee-Huang-Yang correction of ground-state
energy and th... | 1212.6832v1 |
2013-01-04 | Noise-Induced Synchronization, Desynchronization, and Clustering in Globally Coupled Nonidentical Oscillators | We study ensembles of globally coupled, nonidentical phase oscillators
subject to correlated noise, and we identify several important factors that
cause noise and coupling to synchronize or desychronize a system. By
introducing noise in various ways, we find a novel estimate for the onset of
synchrony of a system in te... | 1301.0796v2 |
2013-01-18 | Control of dynamical instability in semiconductor quantum nanostructures diode lasers: role of phase-amplitude coupling | We numerically investigate the complex nonlinear dynamics for two
independently coupled laser systems consisting of (i) mutually delay-coupled
edge emitting diode lasers and (ii) injection-locked quantum nano-structures
lasers. A comparative study in dependence on the dynamical role of alpha
parameter, which determine ... | 1301.4353v2 |
2013-01-30 | D-brane couplings and Generalised Geometry | The goal of this paper is to re-examine D-brane Ramond-Ramond field couplings
in the presence of a B-field. We will argue that the generalised geometry
induced on the world volume by the B-field results in an important but subtle
change on the coupling. In order to explain this, we use the language of
differential K-th... | 1301.7238v1 |
2013-02-01 | Equivalence after extension and matricial coupling coincide with Schur coupling, on separable Hilbert spaces | It is known that two Banach space operators that are Schur coupled are also
equivalent after extension, or equivalently, matricially coupled. The converse
implication, that operators which are equivalent after extension or matricially
coupled are also Schur coupled, was only known for Fredholm Hilbert space
operators a... | 1302.0144v1 |
2013-02-07 | Symmetry breaking and restoring wave transmission in diode-antidiode double chains | We introduce a system of two parallel-coupled discrete nonlinear Schroedinger
(DNLS) inhomogeneous chains. Each one favors the unidirectional transmission of
incident packets, in the opposite directions with respect to each other. Two
different configurations of the diode-antidiode pair are considered, a ladder
and a p... | 1302.1767v2 |
2013-02-12 | Quasi-Bell states in a strongly coupled qubit-oscillator system and their delocalization in the phase space | We study the evolution of bipartite entangled quasi-Bell states in a strongly
coupled qubit-oscillator system in the presence of a static bias, and extend it
to the ultra-strong coupling regime. Using the adiabatic approximation the
reduced density matrix of the qubit is obtained for the strong coupling domain
in close... | 1302.2771v4 |
2013-02-14 | Atomistic Coupling between Magnetization and Lattice Dynamics from First Principles | We formulate a new scheme to study the combined magnetization and lattice
dynamics in magnets, so-called magnetoelastics. The coupling between
magnetization and lattice are considered through an expansion of
electron-phonon coupling, while the magnetization is coupled to electrons
through sd-like interaction. We show t... | 1302.3333v2 |
2013-02-18 | Pulsed chaos synchronization in networks with adaptive couplings | Networks of chaotic units with static couplings can synchronize to a common
chaotic trajectory. The effect of dynamic adaptive couplings on the cooperative
behavior of chaotic networks is investigated. The couplings adjust to the
activities of its two units by two competing mechanisms: An exponential
decrease of the co... | 1302.4273v1 |
2013-03-03 | From individual to strongly coupled metallic nanocavities | Localized plasmonic modes of metallic nanoparticles may hybridize like those
of atoms forming a molecule. However, the rapid decay of the plasmonic fields
outside the metal severely limits the range of these interactions to tens of
nanometers. Herein, we demonstrate very strong coupling of nanocavities in
metal films, ... | 1303.0492v1 |
2013-03-06 | First-principles determination of Heisenberg Hamiltonian parameters for the spin-1/2 kagome antiferromagnet ZnCu3(OH)6Cl2 | Herbertsmithite (ZnCu3(OH)6Cl2) is often discussed as the best realization of
the highly frustrated antiferromagnetic kagome lattice known so far. We employ
density functional theory calculations to determine eight exchange coupling
constants of the underlying Heisenberg Hamiltonian. We find the nearest
neighbour coupl... | 1303.1310v3 |
2013-03-15 | Updated Global Analysis of Higgs Couplings | There are many indirect and direct experimental indications that the new
particle H discovered by the ATLAS and CMS Collaborations has spin zero and
(mostly) positive parity, and that its couplings to other particles are
correlated with their masses. Beyond any reasonable doubt, it is a Higgs boson,
and here we examine... | 1303.3879v1 |
2013-03-20 | Broadband directional coupling in aluminum nitride nanophotonic circuits | Aluminum nitride (AlN)-on-insulator has emerged as a promising platform for
the realization of linear and non-linear integrated photonic circuits. In order
to efficiently route optical signals on-chip, precise control over the
interaction and polarization of evanescently coupled waveguide modes is
required. Here we emp... | 1303.4991v1 |
2013-04-08 | Indirect coupling between localized magnetic moments in triangular graphene nanoflakes | The indirect, charge-carrier mediated coupling between localized magnetic
moments is studied for graphene nanoflakes of triangular shape and zig-zag
edge. The characteristic feature of such nanoflakes is the presence of a shell
of zero-energy states in the electronic spectrum. The tight-binding Hamiltonian
supplemented... | 1304.2162v2 |
2013-04-09 | Real-Space Tailoring of the Electron-Phonon Coupling in Ultra-Clean Nanotube Mechanical Resonators | The coupling between electrons and phonons is at the heart of many
fundamental phenomena in physics. In nature, this coupling is generally
predetermined for both, molecules and solids. Tremendous advances have been
made in controlling electrons and phonons in engineered nanosystems, yet,
control over the coupling betwe... | 1304.2779v1 |
2013-04-22 | Hot scalar radiation setting bounds on the curvature coupling parameter | This paper addresses the interplay between vacuum and thermal local averages
for massless scalar radiation near a plane wall of a large cavity where the
Dirichlet boundary condition is assumed to hold. The main result is that stable
thermodynamic equilibrium is possible only if the curvature coupling parameter
is restr... | 1304.6041v3 |
2013-04-23 | Photon transfer in ultrastrongly coupled three-cavity arrays | We study the photon transfer along a linear array of three coupled cavities
where the central one contains an interacting two-level system in the strong
and ultrastrong coupling regimes. We find that an inhomogeneously coupled array
forbids a complete single-photon transfer between the external cavities when
the centra... | 1304.6221v1 |
2013-04-30 | Confocal microphotoluminescence mapping of coupled and detuned states in photonic molecules | We study the coupling of cavities defined by the local modulation of the
waveguide width using confocal photoluminescence microscopy. We are able to
spatially map the profile of the antisymmetric (antibonding) and symmetric
(bonding) modes of a pair of strongly coupled cavities(photonic molecule) and
follow the coupled... | 1304.8068v2 |
2013-04-30 | Effective Polyakov line action from strong lattice couplings to the deconfinement transition | We calculate the effective Polyakov line action corresponding to SU(2)
lattice gauge theory on a 16^3 X 4 lattice via the "relative weights" method.
We consider a variety of lattice couplings, ranging from beta=1.2 in the
strong-coupling domain, to beta=2.3 at the deconfinement transition, in order
to study how the eff... | 1305.0048v1 |
2013-05-06 | Ground state of three qubits coupled to a harmonic oscillator with ultrastrong coupling | We study the Rabi model composed of three qubits coupled to a harmonic
oscillator without involving the rotating-wave approximation. We show that the
ground state of the three-qubit Rabi model can be analytically treated by using
the transformation method, and the transformed ground state agrees well with
the exactly n... | 1305.1226v3 |
2013-05-17 | Adaptation controls synchrony and cluster states of coupled threshold-model neurons | We analyze zero-lag and cluster synchrony of delay-coupled non-smooth
dynamical systems by extending the master stability approach, and apply this to
networks of adaptive threshold-model neurons. For a homogeneous population of
excitatory and inhibitory neurons we find (i) that subthreshold adaptation
stabilizes or des... | 1305.4114v4 |
2013-05-25 | Multimode Coupling by Boundary Wave Scattering | We show that coupling among multiple resonances can be conveniently
introduced and controlled by boundary wave scattering. We demonstrate this
principle in optical microcavities of quasi-circular shape, where the couplings
of multiple modes are determined by the scattering from different harmonic
boundary deformations.... | 1305.5917v1 |
2013-05-26 | Higgs Couplings and Naturalness | Many extensions of the Standard Model postulate the existence of new weakly
coupled particles, the top partners, at or below the TeV scale. The role of the
top partners is to cancel the quadratic divergence in the Higgs mass parameter
due to top loops. We point out the generic correlation between naturalness (the
degre... | 1305.6068v2 |
2013-05-29 | Constraining $τ$-lepton dipole moments and gluon couplings at the LHC | We study the constraints that can be placed on anomalous $\tau$-lepton
couplings at the LHC. We use an effective Lagrangian description for physics
beyond the standard model which contains the $\tau$-lepton anomalous magnetic
moment, electric dipole moment and weak dipole moments in two operators of
dimension six. We i... | 1305.6833v2 |
2013-05-30 | Holographic Rényi Entropies at Finite Coupling | We compute R\'enyi entropies for a spherical entangling surface in
four-dimensional N=4 super-Yang-Mills at strong coupling using the AdS/CFT
correspondence. Incorporating the effects of the leading \alpha' corrections to
the low energy effective action of type IIB string theory, we calculate the
leading corrections in... | 1305.7191v1 |
2013-07-05 | Spin-orbit coupled fermions in ladder-like optical lattices at half-filling | We study the ground-state phase diagram of two-component fermions loaded in a
ladder-like lattice at half filling in the presence of spin-orbit coupling. For
repulsive fermions with unidirectional spin-orbit coupling along the legs we
identify a N\'{e}el state which is separated from rung-singlet and
ferromagnetic stat... | 1307.1607v1 |
2013-07-09 | Coupling structure of multi-field primordial perturbations | We investigate the coupling relations among perturbations in general
multi-field models. We derived the equations of motion for both background and
perturbations in a general basis. Within this formalism, we revisit the
construction of kinematic orthogonal normal vectors using the successive time
derivatives of the bac... | 1307.2564v1 |
2013-07-19 | Perspective: Coulomb fluids -- weak coupling, strong coupling, in between and beyond | We present a personal view on the current state of statistical mechanics of
Coulomb fluids with special emphasis on the interactions between macromolecular
surfaces, concentrating on the weak and the strong coupling limits. Both are
introduced for a (primitive) counterion-only system in the presence of
macroscopic, uni... | 1307.5130v2 |
2013-07-20 | How to induce multiple delays in coupled chaotic oscillators? | Lag synchronization is a basic phenomenon in mismatched coupled systems,
delay coupled systems and time-delayed systems. It is characterized by a lag
configuration that establishes a unique time shift between all the state
variables of the coupled systems. In this report, an attempt is made how to
induce multiple lag c... | 1307.5380v1 |
2013-10-05 | Gate-defined coupled quantum dots in topological insulators | We consider electrostatically coupled quantum dots in topological insulators,
otherwise confined and gapped by a magnetic texture. By numerically solving the
(2+1) Dirac equation for the wave packet dynamics, we extract the energy
spectrum of the coupled dots as a function of bias-controlled coupling and an
external pe... | 1310.1463v1 |
2013-11-09 | Achieving synchronization in arrays of coupled differential systems with time-varying couplings | In this paper, we study complete synchronization of the complex dynamical
networks described by linearly coupled ordinary differential equation systems
(LCODEs). The coupling considered here is time-varying in both the network
structure and the reaction dynamics. Inspired by our previous paper [6], the
extended Hajnal ... | 1311.2181v1 |
2013-11-29 | Evaluations of low-energy physical quantities in QCD with IR freezing of the coupling | MSbar-like schemes in QCD have in general the running coupling which contains
Landau singularities, i.e., singularities outside the timelike semi-axis, at
low squared momenta. As a consequence, evaluation of the spacelike quantities,
such as current correlators, in terms of (powers of) such a coupling then
results in q... | 1311.7611v2 |
2013-12-10 | Chimera states: The Existence Criteria Revisited | Chimera states, representing a spontaneous break-up of a population of
identical oscillators that are identically coupled, into sub-populations
displaying synchronized and desynchronized behavior, have traditionally been
found to exist in weakly coupled systems and with some form of nonlocal
coupling between the oscill... | 1312.2682v3 |
2013-12-31 | Anisotropic exchange coupling in a nanowire double quantum dot with strong spin-orbit coupling | A spin-orbit qubit is a hybrid qubit that contains both orbital and spin
degrees of freedom of an electron in a quantum dot. Here we study the exchange
coupling between two spin-orbit qubits in a nanowire double quantum dot (DQD)
with strong spin-orbit coupling (SOC). We find that while the total tunneling
in the DQD i... | 1401.0101v2 |
2014-01-15 | Future Prospects for Stau in Higgs Coupling to Di-photon | We study future prospects of the stau which contributes to the Higgs coupling
to di-photon. The coupling is sensitive to new physics and planned to be
measured at percent levels in future colliders. We show that, if the excess of
the coupling is measured to be larger than 4 %, the lightest stau is predicted
to be light... | 1401.3748v2 |
2014-01-29 | Josephson physics of spin-orbit coupled elongated Bose-Einstein condensates | We consider an ultracold bosonic binary mixture confined in a one-dimensional
double-well trap. The two bosonic components are assumed to be two hyperfine
internal states of the same atom. We suppose that these two components are
spin-orbit coupled between each other. We employ the two-mode approximation
starting from ... | 1401.7693v1 |
2014-02-10 | Deeply Coupled Auto-encoder Networks for Cross-view Classification | The comparison of heterogeneous samples extensively exists in many
applications, especially in the task of image classification. In this paper, we
propose a simple but effective coupled neural network, called Deeply Coupled
Autoencoder Networks (DCAN), which seeks to build two deep neural networks,
coupled with each ot... | 1402.2031v1 |
2014-02-28 | Qubit architecture with high coherence and fast tunable coupling | We introduce a superconducting qubit architecture that combines
high-coherence qubits and tunable qubit-qubit coupling. With the ability to set
the coupling to zero, we demonstrate that this architecture is protected from
the frequency crowding problems that arise from fixed coupling. More
importantly, the coupling can... | 1402.7367v1 |
2014-04-18 | New Physics in $e^+e^- \rightarrow Z γ$ at the ILC with polarized beams: Explorations beyond conventional anomalous triple gauge boson coupling | One of the most-studied signals for physics beyond the standard model in the
production of gauge bosons in electron-positron collisions is that due to the
anomalous triple gauge boson couplings in the $Z \gamma$ final state. In this
work, we study the implications of this at the ILC with polarized beams for
signals tha... | 1404.4845v1 |
2014-04-22 | Enhanced signal propagation in a network with unidirectional and random couplings | We investigate the effect of unidirectional regular and random couplings of
units in a network on stochastic resonance. For simplicity we choose the units
as Bellows map with bistability. In a regular network we apply a weak periodic
signal and noise to first unit only. Above certain coupling strength undamped
and enha... | 1404.5400v1 |
2014-04-23 | Probabilistic graphs using coupled random variables | Neural network design has utilized flexible nonlinear processes which can
mimic biological systems, but has suffered from a lack of traceability in the
resulting network. Graphical probabilistic models ground network design in
probabilistic reasoning, but the restrictions reduce the expressive capability
of each node m... | 1404.6955v1 |
2014-07-07 | Constraining Disformally Coupled Scalar Fields | Light scalar fields can naturally couple disformally to matter fields.
Static, non-relativistic sources do not generate a classical field profile for
a disformally coupled scalar, and so such scalars are free from the constraints
on the existence of fifth forces that are so restrictive for conformally
coupled scalars. ... | 1407.1861v2 |
2014-07-21 | Dirac Coupled Channel Analyses of the 2$^-$ Gamma Vibrational band excitation in $^{20}$Ne | Dirac coupled channel analyses are performed using optical potential model
for the high-lying excited states that belong to the 2$^-$ gamma vibrational
band at the 800 MeV unpolarized proton inelastic scatterings from $^{20}$Ne.
The first order vibrational collective models are used to obtain the transition
optical pot... | 1407.5441v2 |
2014-07-30 | Black hole solutions of gravity theories with nonminimal coupling between matter and curvature | We study black hole solutions in an extension of General Relativity (GR) with
an explicit non-minimal coupling between matter and curvature. General black
hole solutions satisfying the known energy conditions are derived including the
ones with anti-de Sitter background. These solutions differ from those of GR
just by ... | 1407.8101v1 |
2014-08-07 | Ferromagnetic resonance of a magnetic dimer with dipolar coupling | We develop a general formalism for analyzing the ferromagnetic resonance
characteristics of a magnetic dimer consisting of two magnetic elements (in a
horizontal or vertical configuration) coupled by dipolar interaction, taking
account of their finite-size and aspect ratio. We study the effect on the
resonance frequenc... | 1408.1594v1 |
2014-08-13 | Weak electron-phonon coupling in the early alkali atomic wires | The structural, electronic and vibrational properties of atomic wires
composed of the early alkali metals lithium and sodium are studied using
density functional perturbation theory. The s-like electronic states near the
Fermi level couple very weakly to longitudinal acoustic phonons and not at all
to the transverse ac... | 1408.3031v1 |
2014-08-26 | Attenuation of excitation decay rate due to collective effect | We study a series of $N$ oscillators each coupled to its nearest neighbours,
and linearly to a phonon field through the oscillator's number operator. We
show that the Hamiltonian of a pair of adjacent oscillators, or a dimer, within
the series of oscillators can be transformed to a form in which they are
collectively c... | 1408.5994v2 |
2014-08-28 | Stable non-Fermi liquid phase of itinerant spin-orbit coupled ferromagnets | Direct coupling between gapless bosons and a Fermi surface results in the
destruction of Landau quasiparticles and a breakdown of Fermi liquid theory.
Such a non-Fermi liquid phase arises in spin-orbit coupled ferromagnets with
spontaneously broken continuous symmetries due to strong coupling between
rotational Goldsto... | 1408.6826v2 |
2014-09-03 | The role of intermediaries in the synchronization of pulse-coupled oscillators | The role of intermediaries in the synchronization of small groups of light
controlled oscillators (LCO) is addressed. A single LCO is a two-time-scale
phase oscillator. When pulse-coupling two LCOs, the synchronization time
decreases monotonously as the coupling strength increases, independent of the
initial conditions... | 1409.1067v1 |
2014-09-05 | Edge binding of sine-Gordon solitons in spin-orbit coupled Bose-Einstein condensates | In recent experiments with ultracold gases a Raman coupling scheme is used to
produce both spin-orbit (SO) and Zeeman-type couplings [Y.-J. Lin et al.,
Nature 471, 83 (2011)]. Their competition drives a phase transition to a
magnetized state with broken $Z_2$ symmetry. Using a hydrodynamic approach we
study a confined ... | 1409.1885v2 |
2014-09-06 | Atomic electronic states: the L-S and j-j coupling schemes and their correlation | In the first part of this paper, we review the assumption of the L-S coupling
scheme, with which we derive the electronic states arising from a given atomic
configuration. Then, with the aid of the spectral data of Group 15 elements, it
becomes clear that the assumption of the L-S coupling scheme is no longer valid
as ... | 1409.2032v1 |
2014-09-07 | Kinetic mixing and symmetry breaking dependent interactions of the dark photon | We examine spontaneous symmetry breaking of a renormalisable U(1) x U(1)
gauge theory coupled to fermions when kinetic mixing is present. We do not
assume that the kinetic mixing parameter is small. A rotation plus scaling is
used to remove the mixing and put the gauge kinetic terms in the canonical
form. Fermion curre... | 1409.2082v1 |
2014-09-09 | A high quality, efficiently coupled microwave cavity for trapping cold molecules | We characterize a Fabry-Perot microwave cavity designed for trapping atoms
and molecules at the antinode of a microwave field. The cavity is fed from a
waveguide through a small coupling hole. Focussing on the compact resonant
modes of the cavity, we measure how the electric field profile, the cavity
quality factor, an... | 1409.2859v1 |
2014-09-15 | Gauge Field Localization on the Brane Through Geometrical Coupling | In this paper we consider a geometrical Yukawa coupling as a solution to the
problem of gauge field localization. We show that upon dimensional reduction
the vector field component of the field is localized but the scalar component
($A_5$) is not. We show this for any smooth version of the Randall-Sundrum
model. The co... | 1409.4396v2 |
2014-09-22 | Phase separation in a spin-orbit coupled Bose-Einstein condensate | We study a spin-orbit (SO) coupled hyperfine spin-1 Bose-Einstein condensate
(BEC) in a quasi-one-dimensional trap. For a SO-coupled BEC in a
one-dimensional box, we show that in the absence of the Rabi term, any non-zero
value of SO coupling will result in a phase separation among the components for
a ferromagnetic BE... | 1409.6211v2 |
2014-10-21 | Stable Coupling of Nonconforming, High-Order Finite Difference Methods | A methodology for handling block-to-block coupling of nonconforming,
multiblock summation-by-parts finite difference methods is proposed. The
coupling is based on the construction of projection operators that move a
finite difference grid solution along an interface to a space of piecewise
defined functions; we specifi... | 1410.5746v3 |
2014-10-22 | Polarization of a quasi two-dimensional repulsive Fermi gas with Rashba spin-orbit coupling: a variational study | Motivated by the remarkable experimental control of synthetic gauge fields in
ultracold atomic systems, we investigate the effect of an artificial Rashba
spin-orbit coupling on the spin polarization of a two-dimensional repulsive
Fermi gas. By using a variational many-body wavefunction, based on a suitable
spinorial st... | 1410.5938v1 |
2014-10-22 | Long-distance radiative coupling between quantum dots in photonic crystal dimers | We study the mutual interaction between two identical quantum dots coupled to
the normal modes of two-site photonic crystal molecules in a planar waveguide
geometry, i.e. photonic crystal dimers. We find that the radiative coupling
between the two quantum emitters is maximized when they are in resonance with
either the... | 1410.6004v1 |
2014-11-03 | Strain dependence of antiferromagnetic interface coupling in La0.7Sr0.3MnO3/SrRuO3 superlattices | We have investigated the magnetic response of La0.7Sr0.3MnO3/SrRuO3
superlattices to biaxial in-plane strain applied in-situ. Superlattices grown
on piezoelectric substrates of 0.72PbMg1/3Nb2/3O3-0.28PbTiO3(001) (PMN-PT) show
strong antiferromagnetic coupling of the two ferromagnetic components. The
coupling field of m... | 1411.0411v2 |
2014-11-09 | Dissipative optomechanics of a single-layer graphene in a microcavity | We study the optomechanical coupling of a single-layer graphene with a high-Q
Fabry-Perot microcavity in the membrane-in-the-middle configuration. In
ordinary dissipative coupling systems, mechanical oscillators modulate the loss
associated with the input coupling of the cavity mode; while in our system, the
graphene o... | 1411.2202v2 |
2014-11-11 | Striped Ferronematic ground states in a spin-orbit coupled $S=1$ Bose gas | We theoretically establish the mean-field phase diagram of a homogeneous
spin-$1$, spin-orbit coupled Bose gas as a function of the spin-dependent
interaction parameter, the Raman coupling strength and the quadratic Zeeman
shift. We find that the interplay between spin-orbit coupling and
spin-dependent interactions lea... | 1411.2990v1 |
2014-11-18 | Bayesian Model comparison of Higgs couplings | We investigate the possibility of contributions from physics beyond the
Standard Model (SM) to the Higgs couplings, in the light of the LHC data. The
work is performed within an interim framework where the magnitude of the Higgs
production and decay rates are rescaled though Higgs coupling scale factors. We
perform Bay... | 1411.4876v2 |
2014-12-05 | Entanglement Dynamics of Quantum Oscillators Nonlinearly Coupled to Thermal Environments | We study the asymptotic entanglement of two quantum harmonic oscillators
nonlinearly coupled to an environment. Coupling to independent baths and a
common bath are investigated. Numerical results obtained using the
Wangsness-Bloch-Redfield method are supplemented by analytical results in the
rotating wave approximation... | 1412.1999v1 |
2014-12-06 | Dynamics and stationarity of two coupled arbitrary oscillators interacting with separate reservoirs | This work addresses the problem of relaxation of open systems to
quasi-equilibrium states. Time-dependent density matrix of two arbitrary
coupled quantum oscillators of arbitrary properties interacting with separate
reservoirs is derived based on path integration. Temporal dynamics of spatial
variances and covariances ... | 1412.2225v1 |
2014-12-08 | Thermal Boundary Conductance Across Metal-Nonmetal Interfaces: Effects of Electron-Phonon Coupling both in Metal and at Interface | We theoretically investigate the thermal boundary conductance across
metal-nonmetal interfaces in the presence of the electron-phonon coupling not
only in metal but also at interface. The thermal energy can be transferred from
metal to nonmetal via three channels: (1) the phonon-phonon coupling at
interface; (2) the el... | 1412.2465v1 |
2014-12-16 | Long Distance Coupling of a Quantum Mechanical Oscillator to the Internal States of an Atomic Ensemble | We propose and investigate a hybrid optomechanical system consisting of a
micro-mechanical oscillator coupled to the internal states of a distant
ensemble of atoms. The interaction between the systems is mediated by a light
field which allows to couple the two systems in a modular way over long
distances. Coupling to i... | 1412.5095v1 |
2014-12-17 | The Gauss-Bonnet Coupling Constant in Classically Scale-Invariant Gravity | We discuss the renormalization of higher-derivative gravity, both without and
with matter fields, in terms of two primary coupling constants rather than
three. A technique for determining the dependence of the Gauss-Bonnet coupling
constant on the remaining couplings is explained, and consistency with the
local form of... | 1412.5572v3 |
2014-12-19 | Iterative LMMSE Channel Estimation, Multiuser Detection, and Decoding via Spatial Coupling | Spatial coupling is utilized to improve the performance of iterative channel
estimation, multiuser detection, and decoding for multiple-input multiple-input
(MIMO) bit-interleaved coded modulation (BICM). Coupling is applied to both
coding and BICM---the encoder uses a protograph-based spatially-coupled
low-density par... | 1412.6223v1 |
2014-12-25 | Localized systems coupled to small baths: from A$_{nderson}$ to Z$_{eno}$ | We investigate what happens if an Anderson localized system is coupled to a
small bath, with a discrete spectrum, when the coupling between system and bath
is specially chosen so as to never localize the bath. We find that the effect
of the bath on localization in the system is a non-monotonic function of the
coupling ... | 1412.7861v3 |
2015-01-04 | Hybrid opto-mechanical systems with nitrogen-vacancy centers | In this review, we briefly overview recent works on hybrid (nano)
opto-mechanical systems that contain both mechanical oscillators and diamond
nitrogen-vacancy (NV) centers. We review two different types of mechanical
oscillators. The first one is a clamped mechanical oscillator, such as a
cantilever, with a fixed freq... | 1501.00636v1 |
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