publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2016-01-13 | Entanglement in correlated random spin chains, RNA folding and kinetic roughening | Average block entanglement in the 1D XX-model with uncorrelated random
couplings is known to grow as the logarithm of the block size, in similarity to
conformal systems. In this work we study random spin chains whose couplings
present long range correlations, generated as gaussian fields with a power-law
spectral funct... | 1601.03408v1 |
2016-01-19 | Ultra-compact and wide-spectrum-range thermo-optic switch based on silicon coupled photonic crystal microcavities | We design, fabricate, and experimentally demonstrate a compact thermo-optic
gate switch comprising a 3.78 um-long coupled L0-type photonic
crystalmicrocavities on a silicon-on-insulator substrate. A nanohole is
inserted in the center of each individual L0 photonic crystalmicrocavity.
Coupling between identical microcav... | 1601.04763v1 |
2016-01-21 | Non-collinear order and gapless superconductivity in s-wave magnetic superconductors | We study the behavior of magnetic superconductors which involve a local
attractive interaction between electrons, and a coupling between local moments
and the electrons. We solve this `Hubbard-Kondo' model through a variational
minimization at zero temperature and validate the results via a Monte Carlo
based on static ... | 1601.05730v3 |
2016-01-26 | Double-Quantum Spin Vortices in SU(3) Spin-Orbit Coupled Bose Gases | We show that double-quantum spin vortices, which are characterized by doubly
quantized circulating spin currents and unmagnetized filled cores, can exist in
the ground states of SU(3) spin-orbit coupled Bose gases. It is found that the
SU(3) spin-orbit coupling and spin-exchange interaction play important roles in
dete... | 1601.06935v2 |
2016-01-26 | Superradiance in a Two-Channel Quantum Wire | A one-dimensional, two-channel quantum wire is studied in the effective
non-Hermitian Hamiltonian framework. Analytical expressions are derived for the
band structure of the isolated wire. Quantum states and transport properties of
the wire coupled to two ideal leads at the edges are studied in detail. The
width distri... | 1601.07078v1 |
2016-01-27 | Microwave emulations and tight-binding calculations of transport in polyacetylene | A novel approach to investigate the electron transport of cis- and
trans-polyacetylene chains in the single-electron approximation is presented by
using microwave emulation measurements and tight-binding calculations. In the
emulation we take into account the different electronic couplings due to the
double bonds leadi... | 1601.07491v3 |
2016-01-28 | Isocurvature Constraints on Portal Couplings | We consider portal models which are ultraweakly coupled with the Standard
Model, and confront them with observational constraints on dark matter
abundance and isocurvature perturbations. We assume the hidden sector to
contain a real singlet scalar $s$ and a sterile neutrino $\psi$ coupled to $s$
via a pseudoscalar Yuka... | 1601.07733v2 |
2016-01-28 | Protecting coherence by environmental decoherence: A solvable paradigmatic model | We consider a particularly simple exactly solvable model for a qubit coupled
to sequentially nested environments. The purpose is to exemplify the coherence
conserving effect of a central system, that has been reported as a result of
increasing the coupling between near and far environment. The paradigmatic
example is t... | 1601.07860v2 |
2016-01-29 | Collective motion patterns of swarms with delay coupling: theory and experiment | The formation of coherent patterns in swarms of interacting self-propelled
autonomous agents is a subject of great interest in a wide range of application
areas, ranging from engineering and physics to biology. In this paper, we model
and experimentally realize a mixed-reality large-scale swarm of delay-coupled
agents.... | 1601.08134v1 |
2016-01-31 | Dirac monopoles with polar-core vortex induced by spin-orbit coupling in spinor Bose-Einstein condensates | We report Dirac monopoles with polar-core vortex induced by spin-orbit
coupling in ferromagnetic Bose-Einstein condensates, which are attached to two
nodal vortex lines along the vertical axis. These monopoles are more stable in
the time scale of experiment and can be detected through directly imaging
vortex lines. Whe... | 1602.00189v2 |
2016-02-04 | Strong coupling in multimode quantum electromechanics | Cavity electro-(opto-)mechanics allows us to access not only single isolated
but also multiple mechanical modes in a massive object. Here we develop a
multi-mode electromechanical system in which a several membrane vibrational
modes are coupled to a three-dimensional loop-gap superconducting microwave
cavity. The tight... | 1602.01554v1 |
2016-02-04 | Isospin properties of quark matter from a 3-flavor NJL model | We have studied the properties of hot and dense quark matter based on the
3-flavor Nambu-Jona-Lasinio (NJL) model as well as its Polyakov-loop extension
(pNJL) with scalar-isovector and vector-isovector couplings. Provided a
considerable large isospin asymmetry or isospin chemical potential, isospin
splittings of const... | 1602.01579v2 |
2016-02-04 | Single-photon-driven high-order sideband transitions in an ultrastrongly coupled circuit quantum electrodynamics system | We report the experimental observation of high-order sideband transitions at
the single-photon level in a quantum circuit system of a flux qubit
ultrastrongly coupled to a coplanar waveguide resonator. With the coupling
strength reaching 10% of the resonator's fundamental frequency, we obtain clear
signatures of higher... | 1602.01584v2 |
2016-02-05 | Emission redistribution from a quantum dot-bowtie nanoantenna | We present a combined experimental and simulation study of a single
self-assembled InGaAs quantum dot coupled to a nearby ($\sim 25nm$) plasmonic
antenna. Micro-photoluminescence spectroscopy shows a $\sim 2.4\times$ increase
of intensity, which is attributed to spatial far-field redistribution of the
emission from the... | 1602.01953v1 |
2016-02-08 | Mode-coupling effects in anisotropic flow in heavy-ion collisions | Higher-order anisotropic flows in heavy-ion collisions are affected by
nonlinear mode coupling effects. It has been suggested that the associated
nonlinear hydrodynamic response coefficients probe the transport properties and
are largely insensitive to the spectrum of initial density fluctuations of the
medium created ... | 1602.02813v2 |
2016-02-11 | Diphoton Excess and Running Couplings | The recently observed diphoton excess at the LHC may suggest the existence of
a singlet (pseudo-) scalar particle with a mass of 750 GeV which couples to
gluons and photons. Assuming that the couplings to gluons and photons originate
from loops of fermions and/or scalars charged under the Standard Model gauge
groups, w... | 1602.03653v1 |
2016-02-18 | Conformal transformations in modified teleparallel theories of gravity revisited | It is well known that one cannot apply a conformal transformation to $f(T)$
gravity to obtain a minimally coupled scalar field model, and thus no Einstein
frame exists for $f(T)$ gravity. Furthermore nonminimally coupled "teleparallel
dark energy models" are not conformally equivalent to $f(T)$ gravity. However,
it can... | 1602.05764v2 |
2016-02-19 | Revised analysis of $^{40}$Ca+$^{96}$Zr fusion reactions | Fusion data for $^{40}$Ca+$^{96}$Zr are analyzed by coupled-channels
calculations that are based on a standard Woods-Saxon potential and include
couplings to multiphonon excitations and transfer channels. The couplings to
multiphonon excitations are the same as used in a previous work. The transfer
couplings are calibr... | 1602.06309v1 |
2016-02-22 | Distributed measurement of mode coupling in birefringent fibers with random polarization modes | A scanning white light interferometer is developed to measure the distributed
polarization coupling (DPC) in high birefringence polarization maintaining
fibers (PMFs). Traditionally, this technique requests only one polarization
mode to be excited or both polarization modes to be excited with equal
intensity in the PMF... | 1602.06974v1 |
2016-02-25 | Radially excited axial mesons and the enigmatic $Z_c$ and $Z_b$ in a coupled-channel model | The enigmatic charged states $Z_c(3900)$, $Z_c(4020)$, $Z_c(4050)$,
$Z_b(10610)$, and $Z_b(10650)$ are studied within a coupled-channel
Schr\"odinger model, where radially excited quark-antiquark pairs, with the
same angular momenta and isospin as the $a_1(1260)$ and $b_1(1235)$, are
strongly coupled to their Okubo-Zwe... | 1602.07821v2 |
2016-04-06 | Towards achieving strong coupling in 3D-cavity with solid state spin resonance | We investigate the microwave magnetic field confinement in several microwave
3D-cavities, using 3D finite-element analysis to determine the best design and
achieve strong coupling between microwave resonant cavity photons and solid
state spins. Specifically, we design cavities for achieving strong coupling of
electroma... | 1604.01516v1 |
2016-04-06 | Localized surface plasmons selectively coupled to resonant light in tubular microcavities | Vertical gold-nanogaps are created on microtubular cavities to explore the
coupling between resonant light supported by the microcavities and surface
plasmons localized at the nanogaps. Selective coupling of optical axial modes
and localized surface plasmons critically depends on the exact location of the
gold-nanogap ... | 1604.01599v1 |
2016-04-08 | Titratable Macroions in Multivalent Electrolyte Solutions: Strong Coupling Dressed Ion Approach | We present a theoretical description of the effect of polyvalent ions on the
interaction between titratable macro-ions. The model system consists of two
point-like macro-ions with dissociable sites, immersed in an asymmetric ionic
mixture of monovalent and polyvalent salts. We formulate a {\em dressed ion
strong coupli... | 1604.02301v1 |
2016-04-11 | Study of the Pion-Nucleon Coupling Constant Charge Dependence on the Basis of the Low-Energy Data on Nucleon-Nucleon Interaction | We study relationship between the physical quantities that characterize
pion-nucleon and nucleon-nucleon interaction on the basis of the fact that
nuclear forces in the nucleon-nucleon system at low energies are mainly
determined by the one-pion exchange mechanism. By making use of the recommended
proton-proton low-ene... | 1604.02912v1 |
2016-04-12 | EPW: Electron-phonon coupling, transport and superconducting properties using maximally localized Wannier functions | The EPW (Electron-Phonon coupling using Wannier functions) software is a
Fortran90 code that uses density-functional perturbation theory and maximally
localized Wannier functions for computing electron-phonon couplings and related
properties in solids accurately and efficiently. The EPW v4 program can be used
to comput... | 1604.03525v2 |
2016-04-12 | Dynamical Gravitational Coupling as a Modified Theory of General Relativity | A modified theory of general relativity is proposed, where the gravitational
constant is replaced by a dynamical variable in space-time. The dynamics of the
gravitational coupling is described by a family of parametrized null geodesics,
implying that the gravitational coupling at a space-time point is determined by
sol... | 1604.03872v1 |
2016-04-13 | Charged oscillator quantum state generation with Rydberg atoms | We explore the possibility of engineering quantum states of a charged
mechanical oscillator by coupling it to a stream of atoms in superpositions of
high-lying Rydberg states. Our scheme relies on the driving of a two-phonon
resonance within the oscillator by coupling it to an atomic two-photon
transition. This approac... | 1604.03925v2 |
2016-04-16 | Contextuality-by-Default 2.0: Systems with Binary Random Variables | The paper outlines a new development in the Contextuality-by-Default theory
as applied to finite systems of binary random variables. The logic and
principles of the original theory remain unchanged, but the definition of
contextuality of a system of random variables is now based on multimaximal
rather than maximal coup... | 1604.04799v4 |
2016-04-21 | Ferromagnetic resonance of exchange-coupled perpendicularly magnetized bilayers | Strong ferromagnetic interlayer exchange couplings $J$ in perpendicularly
magnetized systems are becoming increasingly desirable for applications. We
study whether ferromagnetic interlayer exchange couplings can be measured by a
combination of broadband ferromagnetic resonance methods and magnetometry
hysteresis loops.... | 1604.06332v1 |
2016-04-24 | Coupled Spin-Light dynamics in Cavity Optomagnonics | Experiments during the past two years have shown strong resonant
photon-magnon coupling in microwave cavities, while coupling in the optical
regime was demonstrated very recently for the first time. Unlike with
microwaves, the coupling in optical cavities is parametric, akin to
optomechanical systems. This line of rese... | 1604.07053v3 |
2016-06-07 | Measuring anomalous WW$γ$ and t$\bar{\text{t}}γ$ couplings using top+$γ$ production at the LHC | We consider the electroweak production of a top quark in association with a
photon at the LHC to probe the electroweak top quark couplings
(t$\bar{\text{t}}\gamma$) as well as the triple gauge boson couplings
(WW$\gamma$). The study is based on the modifications of the
t$\bar{\text{t}}\gamma$ and WW$\gamma$ interaction... | 1606.02178v2 |
2016-06-08 | Strong optomechanical coupling in a slotted photonic crystal nanobeam cavity with an ultrahigh quality factor-to-mode volume ratio | We describe the design, fabrication, and characterization of a
one-dimensional silicon photonic crystal cavity in which a central slot is used
to enhance the overlap between highly localized optical and mechanical modes.
The optical mode has an extremely small mode volume of 0.017
$(\lambda_{vac}/n)^3$, and an optomech... | 1606.02491v1 |
2016-06-09 | Spin dynamical phase and anti-resonance in a strongly coupled magnon-photon system | We experimentally studied a strongly coupled magnon-photon system via
microwave transmission measurements. An anti-resonance, i.e. the suppression of
the microwave transmission, is observed, indicating a relative phase change
between the magnon response and the driving microwave field. We show that this
anti-resonance ... | 1606.03056v1 |
2016-06-14 | Modulation instability in quasi two-dimensional spin-orbit coupled Bose-Einstein condensates | We theoretically investigate the dynamics of modulation instability (MI) in
two-dimensional spin-orbit coupled Bose-Einstein condensates (BECs). The
analysis is performed for equal densities of pseudo-spin components. Different
combination of the signs of intra- and inter-component interaction strengths
are considered,... | 1606.04426v2 |
2016-06-16 | Mid-Infrared intersubband polaritons in dispersive metal-insulator-metal resonators | We demonstrate room-temperature strong-coupling between a mid-infrared
($\lambda$=9.9 $\mu$m) intersubband transition and the fundamental cavity mode
of a metal-insulator-metal resonator. Patterning of the resonator surface
enables surface-coupling of the radiation and introduces an energy dispersion
which can be probe... | 1606.05090v1 |
2016-06-16 | $tbW$ Anomalous Couplings in the Two Higgs Doublet Model | We make a complete one loop calculation of the $tbW$ couplings in the Two
Higgs Doublet Model. We evaluate both the anomalous couplings $g_L$ and $g_R$
as well as left handed and right handed component of $tbW$. The computation is
done in the Feynman gauge using the on-shell scheme renormalization for the
Standard Mode... | 1606.05270v3 |
2016-06-20 | Doubly coupled matter fields in massive bigravity | In the context of massive (bi-)gravity non-minimal matter couplings have been
proposed. These couplings are special in the sense that they are free of the
Boulware-Deser ghost below the strong coupling scale and can be used
consistently as an effective field theory. Furthermore, they enrich the
phenomenology of massive... | 1606.06141v1 |
2016-06-23 | Synchronization of two cavity-coupled qubits measured by entanglement | Some nonlinear radiations such as superfluorescence can be understood as
cooperative effects between atoms. We regard the cooperative radiation as a
manifested effect secondary to the intrinsic synchronization among the atoms
and propose a time-resolved measure of synchronization on a cavity-coupled
dual-qubit system u... | 1606.07209v2 |
2016-06-27 | Nonreciprocal Transverse Photonic Spin and Magnetization-Induced Electromagnetic Spin-Orbit Coupling | A study of nonreciprocal transverse-spin angular-momentum-density shifts for
evanescent waves in magneto-optic waveguide media is presented. Their
functional relation to electromagnetic spin- and orbital-momenta is presented
and analyzed. It is shown that the magneto-optic gyrotropy can be
re-interpreted as the nonreci... | 1606.08334v2 |
2016-06-27 | Tunable inductive coupling of superconducting qubits in the strongly nonlinear regime | For a variety of superconducting qubits, tunable interactions are achieved
through mutual inductive coupling to a coupler circuit containing a nonlinear
Josephson element. In this paper we derive the general interaction mediated by
such a circuit under the Born-Oppenheimer Approximation. This interaction
naturally deco... | 1606.08382v3 |
2016-06-30 | Light quark Yukawa couplings from Higgs kinematics | We show that the normalized Higgs production $p_T$ and $y_h$ distributions
are sensitive probes of Higgs couplings to light quarks. For up and/or down
quark Yukawa couplings comparable to the SM $b$ quark Yukawa the $\bar u u$ or
$\bar d d$ fusion production of the Higgs could lead to appreciable softer
$p_T$ distribut... | 1606.09621v3 |
2016-07-01 | Exchange couplings for Mn ions in CdTe: validity of spin models for dilute magnetic II-VI semiconductors | We employ density-functional theory (DFT) in the generalized gradient
approximation (GGA) and its extensions GGA+$U$ and GGA+Gutzwiller to calculate
the magnetic exchange couplings between pairs of Mn ions substituting Cd in a
CdTe crystal at very small doping. DFT(GGA) overestimates the exchange
couplings by a factor ... | 1607.00231v1 |
2016-07-02 | Suppression of chaos through coupling to an external chaotic system | We explore the behaviour of an ensemble of chaotic oscillators coupled only
to an external chaotic system, whose intrinsic dynamics may be similar or
dissimilar to the group. Counter-intuitively, we find that a dissimilar
external system manages to suppress the intrinsic chaos of the oscillators to
fixed point dynamics... | 1607.00462v1 |
2016-07-08 | Observing Coherence Effects in an Overdamped Quantum System | It is usually considered that the spectrum of an optical cavity coupled to an
atomic medium does not exhibit a normal-mode splitting unless the system
satisfies the strong coupling condition, meaning the Rabi frequency of the
coherent coupling exceeds the decay rates of atom and cavity excitations. Here
we show that th... | 1607.02362v2 |
2016-07-12 | Holomorphic Yukawa Couplings for Complete Intersection Calabi-Yau Manifolds | We develop methods to compute holomorphic Yukawa couplings for heterotic
compactifications on complete intersection Calabi-Yau manifolds, generalising
results of an earlier paper for Calabi-Yau hypersurfaces. Our methods are based
on constructing the required bundle-valued forms explicitly and evaluating the
relevant i... | 1607.03461v2 |
2016-07-14 | Probing the Higgs self coupling via single Higgs production at the LHC | We propose a method to determine the trilinear Higgs self coupling that is
alternative to the direct measurement of Higgs pair production total cross
sections and differential distributions. The method relies on the effects that
electroweak loops featuring an anomalous trilinear coupling would imprint on
single Higgs p... | 1607.04251v3 |
2016-07-15 | Guided-wave Brillouin scattering in air | Here we identify a new form of optomechanical coupling in gas-filled
hollow-core fibers. Stimulated forward Brillouin scattering is observed in air
in the core of a photonic bandgap fiber. A single resonance is observed at 35
MHz, which corresponds to the first excited axial-radial acoustic mode in the
air-filled core.... | 1607.04664v1 |
2016-07-19 | Effective Multi-Higgs Couplings to Gluons | Standard-Model Higgs bosons are dominantly produced via the gluon-fusion
mechanism $gg \to H$ at the LHC, i.e. in a loop-mediated process with top loops
providing the dominant contribution. For the measured Higgs boson mass of $\sim
125$ GeV the limit of heavy top quarks provides a reliable approximation as
long as the... | 1607.05548v1 |
2017-02-02 | Bottom-Tau Unification in Supersymmetric SU(5) Models with Extra Matters | We consider $b$-$\tau$ unification in supersymmetric $SU(5)$ grand unified
theories (GUTs) with extra matters. The renormalization group runnings of $b$
and $\tau$ Yukawa coupling constants may be significantly affected by the
existence of extra matters. If the extra matters interact with the standard
model particles (... | 1702.00790v1 |
2017-02-03 | Attenuated Coupled Cluster: A Heuristic Polynomial Similarity Transformation Incorporating Spin Symmetry Projection Into Traditional Coupled Cluster Theory | In electronic structure theory, restricted single-reference coupled cluster
(CC) captures weak correlation but fails catastrophically under strong
correlation. Spin-projected unrestricted Hartree-Fock (SUHF), on the other
hand, misses weak correlation but captures a large portion of strong
correlation. The theoretical ... | 1702.00906v1 |
2017-02-12 | Practical Approximation Method for Firing Rate Models of Coupled Neural Networks with Correlated Inputs | Rapid experimental advances now enable simultaneous electrophysiological
recording of neural activity at single-cell resolution across large regions of
the nervous system. Models of this neural network activity will necessarily
increase in size and complexity, thus increasing the computational cost of
simulating them a... | 1702.03474v4 |
2017-02-13 | Second Harmonic Generation from Critically Coupled Surface Phonon Polaritons | Mid-infrared nanophotonics can be realized using sub-diffractional light
localization and field enhancement with surface phonon polaritons in polar
dielectric materials. We experimentally demonstrate second harmonic generation
due to the optical field enhancement from critically coupled surface phonon
polaritons at the... | 1702.03705v1 |
2017-02-13 | Analytic structure of eigenvalues of coupled quantum systems | By analytically continuing the coupling constant $g$ of a coupled quantum
theory, one can, at least in principle, arrive at a state whose energy is lower
than the ground state of the theory. The idea is to begin with the uncoupled
$g=0$ theory in its ground state, to analytically continue around an
exceptional point (s... | 1702.03839v1 |
2017-02-13 | MEXIT: Maximal un-coupling times for stochastic processes | Classical coupling constructions arrange for copies of the \emph{same} Markov
process started at two \emph{different} initial states to become equal as soon
as possible. In this paper, we consider an alternative coupling framework in
which one seeks to arrange for two \emph{different} Markov (or other
stochastic) proce... | 1702.03917v4 |
2017-02-14 | Analysis of the Extended Coupled-Cluster Method in Quantum Chemistry | The mathematical foundation of the so-called extended coupled-cluster method
for the solution of the many-fermion Schr\"odinger equation is here developed.
We prove an existence and uniqueness result, both in the full
infinite-dimensional amplitude space as well as for discretized versions of it.
The extended coupled-c... | 1702.04317v1 |
2017-02-15 | A natural framework for isogeometric fluid-structure interaction based on BEM-shell coupling | The interaction between thin structures and incompressible Newtonian fluids
is ubiquitous both in nature and in industrial applications. In this paper we
present an isogeometric formulation of such problems which exploits a boundary
integral formulation of Stokes equations to model the surrounding flow, and a
non linea... | 1702.04502v1 |
2017-02-16 | Comments on the Random Thirring Model | The Thirring model with random couplings is a translationally invariant
generalisation of the SYK model to 1+1 dimensions, which is tractable in the
large N limit. We compute its two point function, at large distances, for any
strength of the random coupling. For a given realisation, the couplings contain
both irreleva... | 1702.05105v2 |
2017-02-21 | Synthetic phonons enable nonreciprocal coupling to arbitrary resonator networks | Inducing nonreciprocal wave propagation is a fundamental challenge across a
wide range of physical systems in electromagnetics, optics, and acoustics.
Recent efforts to create nonreciprocal devices have departed from established
magneto-optic methods and instead exploited momentum based techniques such as
coherent spat... | 1702.06476v3 |
2017-02-23 | Synchronized spin-photon coupling in a microwave cavity | We study spin-photon coupling in cavity in the presence of relative phase
shift between two ferromagnetic resonance driving forces. We show that the
anticrossing gap can be manipulated by varying the relative phase. Increasing
the phase difference leads to narrowing the anticrossing gap of hybridized
modes and eventual... | 1702.07110v4 |
2017-02-24 | Electroweak stability and non-minimal coupling | The measured values of the Higgs and top quark mass indicate that the
electroweak vacuum is metastable if there is no new physics below the Planck
scale. This is at odds with a period of high scale inflation. A non-minimal
coupling between the Higgs field and the Ricci scalar can stabilize the vacuum
as it generates a ... | 1702.07636v2 |
2017-02-25 | A model bridging chimera state and explosive synchronization | Global and partial synchronization are the two distinctive forms of
synchronization in coupled oscillators and have been well studied in the past
decades. Recent attention on synchronization is focused on the chimera state
(CS) and explosive synchronization (ES), but little attention has been paid to
their relationship... | 1702.07897v1 |
2017-02-26 | Unraveling the Phase-amplitude Coupling Modulation in a Delay-Coupled Diode Lasers Functionality | We numerically investigate the effect of phase-amplitude coupling modulation
on power spectra in semiconductor lasers subject to optical injection in a face
to face configuration, when a non-negligible injection delay time is taken into
account. We find that as phase-amplitude coupling factor alpha varies, the
system g... | 1702.08893v1 |
2017-03-07 | Bandpass transmission spectra of a whispering-gallery microcavity coupled to an ultrathin fiber | Tapered fibers with diameters ranging from 1-4 micron are widely used to
excite the whispering-gallery (WG) modes of microcavities. Typically, the
transmission spectrum of a WG cavity coupled to a waveguide around a resonance
assumes a Lorentzian dip morphology due to resonant absorption of the light
within the cavity.... | 1703.02267v1 |
2017-03-09 | Dispersive Regimes of the Dicke Model | We study two dispersive regimes in the dynamics of $N$ two-level atoms
interacting with a bosonic mode for long interaction times. Firstly, we analyze
the dispersive multiqubit quantum Rabi model for the regime in which the qubit
frequencies are equal and smaller than the mode frequency, and for values of
the coupling ... | 1703.03377v2 |
2017-03-06 | Nonperturbative Casimir effect and monopoles: compact Abelian gauge theory in two spatial dimensions | We demonstrate that Casimir forces associated with zero-point fluctuations of
quantum vacuum may be substantially affected by the presence of dynamical
topological defects. In order to illustrate this nonperturbative effect we
study the Casimir interactions between dielectric wires in a compact
formulation of Abelian g... | 1703.03439v1 |
2017-03-10 | Entropy production and time-asymmetry in the presence of strong interactions | It is known that the equilibrium properties of open classical systems that
are strongly coupled to a heat bath are described by a set of thermodynamic
potentials related to the system's Hamiltonian of mean force. By adapting this
framework to a more general class of non-equilibrium states, we show that the
equilibrium ... | 1703.03764v1 |
2017-03-11 | Single-photon nonreciprocal transport in one-dimensional coupled-resonator waveguides | We study the transport of a single photon in two coupled one-dimensional
semi-infinite coupled-resonator waveguides (CRWs), in which both end sides are
coupled to a dissipative cavity. We demonstrate that a single photon can
transfer from one semi-infinite CRW to the other nonreciprocally. Based on such
nonreciprocity,... | 1703.03969v1 |
2017-03-13 | Characterization of hidden modes in networks of superconducting qubits | We present a method for detecting electromagnetic (EM) modes that couple to a
superconducting qubit in a circuit-QED architecture. Based on
measurement-induced dephasing, this technique allows the measurement of modes
that have a high quality factor (Q) and may be difficult to detect through
standard transmission and r... | 1703.04501v2 |
2017-03-21 | Axion Detection with Cavity Arrays | Using eigenmode analysis and full 3D FEM modelling, we demonstrate that a
closed cavity built of an array of elementary harmonic oscillators with
negative mutual couplings exhibits a dispersion curve with lower order modes
corresponding to higher frequencies. Such cavity arrays may help to achieve
large mode volumes fo... | 1703.07207v3 |
2017-03-25 | Lepton Portal Limit of Inert Higgs Doublet Dark Matter with Radiative Neutrino Mass | We study an extension of the Inert Higgs Doublet Model (IHDM) by three copies
of right handed neutrinos and heavy charged leptons such that both the inert
Higgs doublet and the heavy fermions are odd under the $Z_2$ symmetry of the
model. The neutrino masses are generated at one loop in the scotogenic fashion.
Assuming... | 1703.08674v1 |
2017-03-27 | Long-lasting Quantum Memories: Extending the Coherence Time of Superconducting Artificial Atoms in the Ultrastrong-Coupling Regime | Quantum systems are affected by interactions with their environments, causing
decoherence through two processes: pure dephasing and energy relaxation. For
quantum information processing it is important to increase the coherence time
of Josephson qubits and other artificial two-level atoms. We show theoretically
that if... | 1703.08951v2 |
2017-07-31 | Minimal Flavor Violation with Axion-like Particles | We revisit the flavor-changing processes involving an axion-like particle
(ALP) in the context of generic ALP effective lagrangian with a discussion of
possible UV completions providing the origin of the relevant bare ALP
couplings. We focus on the minimal scenario that ALP has flavor-conserving
couplings at tree level... | 1708.00021v3 |
2017-08-02 | Quantum thermodynamic properties of a cold atom coupled to a heat bath in non-Abelian gauge potentials | In this work, we study different quantum thermodynamic functions (QTFs) of a
cold atom subjected to an artificial non-Abelian uniform magnetic field and
linearly coupled to a quantum heat bath through either usual
coordinate-coordinate coupling or through momentum variables. The bath is
modelled as a collection of inde... | 1708.00753v1 |
2017-08-03 | From sudden quench to adiabatic dynamics in the attractive Hubbard model | We study the crossover between the sudden quench limit and the adiabatic
dynamics of superconducting states in the attractive Hubbard model. We focus on
the dynamics induced by the change of the attractive interaction during a
finite ramp time which is varied in order to track the evolution of the
dynamical phase diagr... | 1708.01096v2 |
2017-08-07 | Diffusion Dynamics and Optimal Coupling in Directed Multiplex Networks | We study the dynamics of diffusion processes acting on directed multiplex
networks, i.e., coupled multilayer networks where at least one layer consists
of a directed graph. We reveal that directed multiplex networks may exhibit a
faster diffusion at an intermediate degree of coupling than when the two layers
are fully ... | 1708.01951v1 |
2017-08-16 | Exchange constants in molecule-based magnets derived from density functional methods | Cu(pyz)(NO3)2 is a quasi one-dimensional molecular antiferromagnet that
exhibits three dimensional long-range magnetic order below TN=110 mK due to the
presence of weak inter-chain exchange couplings. Here we compare calculations
of the three largest exchange coupling constants in this system using two
techniques based... | 1708.04787v1 |
2017-08-24 | Magnetization in pristine graphene with Zeeman splitting and variable spin-orbit coupling | The aim of this work is to describe the spin magnetization of graphene with
Rashba spinorbit coupling and Zeeman effect. It is shown that the magnetization
depends critically on the spin-orbit coupling l that is controlled with an
external electric field. In turn, by manipulating the density of charge
carriers, it is s... | 1708.07574v1 |
2017-08-25 | Kinetic layers and coupling conditions for macroscopic equations on networks I: the wave equation | We consider kinetic and associated macroscopic equations on networks. The
general approach will be explained in this paper for a linear kinetic BGK model
and the corresponding limit for small Knudsen number, which is the wave
equation. Coupling conditions for the macroscopic equations are derived from
the kinetic condi... | 1708.07757v1 |
2017-08-30 | Integrated nanoplasmonic quantum interfaces for room temperature single photon sources | We describe a general analytical framework of a nanoplasmonic cavity-emitter
system interacting with a dielectric photonic waveguide. Taking into account
emitter quenching and dephasing, our model directly reveals the single photon
extraction efficiency, $\eta$, as well as the indistinguishability, $I$, of
photons coup... | 1708.09487v1 |
2018-02-06 | Reconfigurable topological phases in next-nearest-neighbor coupled resonator lattices | We present a reconfigurable topological photonic system consisting of a 2D
lattice of coupled ring resonators, with two sublattices of site rings coupled
by link rings, which can be accurately described by a tight-binding model.
Unlike previous coupled-ring topological models, the design is translationally
invariant, s... | 1802.02253v3 |
2018-02-07 | The Ising model coupled to 2d orders | In this article we make first steps in coupling matter to causal set theory
in the path integral. We explore the case of the Ising model coupled to the 2d
discrete Einstein Hilbert action, restricted to the 2d orders. We probe the
phase diagram in terms of the Wick rotation parameter \b{eta} and the Ising
coupling j an... | 1802.02519v1 |
2018-02-08 | External and mutual synchronization of chimeras in a two layer network of nonlinear oscillators | We study numerically synchronization phenomena of spatiotemporal structures,
including chimera states, in a two layer network of nonlocally coupled
nonlinear chaotic discrete-time systems. Each of the interacting ensembles
represents a one layer ring network of nonlocally coupled logistic maps in the
chaotic regime. Th... | 1802.02771v1 |
2018-02-08 | Measurement process and inversions using helioseismic normal-mode coupling | Normal modes are coupled by the presence of perturbations in the Sun,
providing a novel and under-appreciated helioseismic technique with which to
image the solar interior. The process of measuring coupling between normal
modes is straightforward, much more so when compared with other prevalent
helioseismic techniques.... | 1802.02776v2 |
2018-02-11 | Scattering of fermions in the Yukawa theory coupled to Unimodular Gravity | We compute the lowest order gravitational UV divergent radiative corrections
to the S matrix element of the $fermion + fermion\rightarrow fermion + fermion$
scattering process in the massive Yukawa theory, coupled either to Unimodular
Gravity or to General Relativity. We show that both Unimodular Gravity and
General Re... | 1802.03755v1 |
2018-02-14 | Probing neutrino coupling to a light scalar with coherent neutrino scattering | Large neutrino event numbers in future experiments measuring coherent elastic
neutrino nucleus scattering allow precision measurements of standard and new
physics. We analyze the current and prospective limits of a light scalar
particle coupling to neutrinos and quarks, using COHERENT and CONUS as
examples. Both lepton... | 1802.05171v1 |
2018-02-14 | Spin-lattice Coupling in U(1) Quantum Spin Liquids | Quantum spin liquids (QSLs) are exotic phases with intrinsic massive
entanglements. Instead of microscopic spins, fractionalized particles and gauge
fluctuations are emergent, revealing QSLs' exotic natures. Quantum spins with
strong spin-orbit coupling on a pyrchlore lattice, for example Pr2Zr2O7, are
suggested to hos... | 1802.05280v2 |
2018-02-17 | Potential and spin-exchange interaction between Anderson impurities in graphene | The effective interaction between resonant magnetic Anderson impurities in
graphene, mediated by conduction electrons, is studied as a function of the
strength of the onsite energy level of the impurities and the amplitude of
coupling to conduction electrons. The sign and character of the interaction
depend on whether ... | 1802.06171v1 |
2018-02-19 | Suppression of photo-oxidation of organic chromophores by strong coupling to plasmonic nanoantennas | Intermixed light-matter quasiparticles - polaritons - possess unique optical
properties owned to their compositional nature. These intriguing hybrid states
have been extensively studied over the past decades in a wide range of
realizations aiming at both basic science and emerging applications. However,
recently it has... | 1802.06616v1 |
2018-02-22 | Nonequilibrium dynamics of the O(N) model on dS_3 and AdS crunches | We study the nonperturbative quantum evolution of the interacting O(N) vector
model at large-N, formulated on a spatial two-sphere, with time dependent
couplings which diverge at finite time. This model - the so-called "E-frame"
theory, is related via a conformal transformation to the interacting O(N) model
in three di... | 1802.08202v1 |
2018-02-22 | Error correction for gate operations in systems of exchange-coupled singlet-triplet qubits in double quantum dots | We present a scheme for correcting for crosstalk- and noise-induced errors in
exchange-coupled singlet-triplet semiconductor double quantum dot qubits. While
exchange coupling allows the coupling strength to be controlled independently
of the intraqubit exchange couplings, there is also the problem of leakage,
which mu... | 1802.08256v2 |
2018-02-26 | Generalized Ultrastrong Optomechanics | We propose a reliable scheme to realize a generalized ultrastrong
optomechanical coupling in a two-mode cross-Kerr-type coupled system, where one
of the bosonic modes is strongly driven. The effective optomechanical
interaction takes the form of a product of the photon number operator of one
mode and the quadrature ope... | 1802.09254v1 |
2018-02-28 | Beliaev Damping in Spin-$\frac{1}{2}$ Interacting Bosons with Spin-Orbit Coupling | Beliaev damping provides one of the most important mechanisms for dissipation
of quasiparticles through beyond-mean-field effects at zero temperature. Here
we present the first analytical result of Beliaev damping in low-energy
excitations of spin-$\frac{1}{2}$ interacting bosons with equal Rashba and
Dresslhaus spin-o... | 1802.10295v1 |
2018-04-03 | Quantum entanglement driven by electron-vibrational mode coupling | In this work, we provided a proof-of-principle of efficient production of
maximally entangled states using charged quantum dots coupled to vibrational
modes. The physical system consists of two pairs of quantum dots, each pair
with a single electron able to tunnel between the dots, thus encoding a qubit.
The electrons,... | 1804.01123v2 |
2018-04-05 | Spatially coupled turbo-like codes: a new trade-off between waterfall and error floor | Spatially coupled turbo-like codes (SC-TCs) have been shown to have excellent
decoding thresholds due to the threshold saturation effect. Furthermore, even
for moderate block lengths, simulation results demonstrate very good bit error
rate performance (BER) in the waterfall region. In this paper, we discuss the
effect ... | 1804.01706v1 |
2018-04-05 | Studying a charged quark gluon plasma via holography and higher derivative corrections | We compute finite 't Hooft coupling corrections to observables related to
charged quantities in a strongly coupled $\mathcal{N}=4$ supersymmetric
Yang-Mills plasma. The coupling corrected equations of motion of gauge fields
are explicitly derived and differ from findings of previous works, which
contained several small... | 1804.01912v3 |
2018-04-09 | How to Synthesize Exceptional Points with Three Resonators | In non-Hermitian coulped-resonator networks, the eigenvectors of degenerate
eigenmodes may become parallel due to the singularity at so-called Exceptional
Points (EP). To exploit the parametric sensitivity at EPs, an important problem
is, given an arbitrary set of coupled resonators, how to generate a desired EP
by pro... | 1804.03041v1 |
2018-04-09 | Crystal-field effects in graphene with interface-induced spin-orbit coupling | We consider theoretically the influence of crystalline fields on the
electronic structure of graphene placed on a layered material with reduced
symmetry and large spin-orbit coupling (SOC). We use a perturbative procedure
combined with the Slater-Koster method to derive the low-energy effective
Hamiltonian around the $... | 1804.03187v1 |
2018-04-17 | Effective control of chemical potentials by Rabi coupling with rf-fields in ultracold mixtures | We show that a linear term coupling the atoms of an ultracold binary mixture
provides a simple method to induce an effective and tunable population
imbalance between them. This term is easily realized by a Rabi coupling between
different hyperfine levels of the same atomic species. The resulting effective
imbalance hol... | 1804.06266v1 |
2018-04-18 | Ferromagnetic resonance linewidth in coupled layers with easy-plane and perpendicular magnetic anisotropies | Magnetic bilayers with different magnetic anisotropy directions are
interesting for spintronic appli- cations as they offer the possibility to
engineer tilted remnant magnetization states. We investigate the ferromagnetic
resonance (FMR) linewidth of modes associated with two interlayer exchange-
coupled ferromagnetic ... | 1804.06796v1 |
2018-04-20 | Non-minimal coupling contribution to DIS at low $x$ in Holographic QCD | We consider the effect of including a non-minimal coupling between a $U(1)$
vector gauge field and the graviton Regge trajectory in holographic QCD models.
This coupling describes the QCD interaction between the quark bilinear
electromagnetic current and the Pomeron. We test this new coupling against DIS
data at low Bj... | 1804.07778v1 |
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