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1807.02725
Numerical analysis of a discontinuous Galerkin method for Cahn-Hilliard-Navier-Stokes equations
In this paper, we derive a theoretical analysis of an interior penalty discontinuous Galerkin methods for solving the Cahn-Hilliard-Navier-Stokes model problem. We prove unconditional unique solvability of the discrete system, obtain unconditional discrete energy dissipation law, and derive stability bounds with a ge...
math.NA
1807.02726
Variational Lagrangian formulation of the Euler equations for incompressible flow: A simple derivation
In 1966, Arnold [1] showed that the Lagrangian flow of ideal incompressible fluids (described by Euler equations) coincide with the geodesic flow on the manifold of volume preserving diffeomorphisms of the fluid domain. Arnold's proof and the subsequent work on this topic rely heavily on the properties of Lie groups ...
physics.flu-dyn math-ph math.MP physics.class-ph
1807.02727
Flavored Non-Minimal Left-Right Symmetric Model Fermion Masses and Mixings
A complete study on the fermion masses and flavor mixing is presented in a non-minimal left-right symmetric model (NMLRMS) where the ${\bf S}_{3}\otimes {\bf Z}_{2}\otimes {\bf Z}^{e}_{2}$ flavor symmetry drives the Yukawa couplings. In the quark sector, the mass matrices possess a kind of the generalized Fritzsch te...
hep-ph
1807.02728
Abnormality Detection inside Blood Vessels with Mobile Nanomachines
Motivated by the numerous healthcare applications of molecular communication within Internet of Bio-Nano Things (IoBNT), this work addresses the problem of abnormality detection in a blood vessel using multiple biological embedded computing devices called cooperative biological nanomachines (CNs), and a common receiv...
cs.IT math.IT
1807.02729
Sur un syst\`eme int\'egrable \`a bord
[French] We develop new applications of Sklyanin's $K$-matrix formalism to the study of periodic solutions of the sinh-Gordon equation.
hep-th
1807.02730
Model-Independent Bounds on $R(J/\psi)$
We present a model-independent bound on $R(J/\psi) \! \equiv \! \mathcal{BR} (B_c^+ \rightarrow J/\psi \, \tau^+\nu_\tau)/ \mathcal{BR} (B_c^+ \rightarrow J/\psi \, \mu^+\nu_\mu)$. This bound is constructed by constraining the form factors through a combination of dispersive relations, heavy-quark relations at zero-r...
hep-ph hep-ex hep-lat nucl-th
1807.02731
Lorentzian Einstein-Ricci Flows
We study the Ricci flow for the Lorentzian Einstein-Hilbert action. We show that Einstein gravity emerges as a fixed point of the Einstein-Ricci flow equations and derive a renormalization group flow in Euclidean signature. By considering linearizations near the fixed point, the dynamics of the metric reveal that cur...
gr-qc hep-th math-ph math.MP
1807.02732
Simultaneously high electron and hole mobilities in cubic boron-V compounds: BP, BAs and BSb
Through first-principles calculations, the phonon-limited transport properties of cubic boron-V compounds (BP, BAs and BSb) are studied. We find that the high optical phonon frequency in these compounds leads to the substantial suppression of polar scattering and the reduction of inter-valley transition mediated by l...
cond-mat.mtrl-sci
1807.02733
Energy transfer from intense laser pulse to dielectrics in time-dependent density functional theory
Energy transfer processes from a high-intensity ultrashort laser pulse to electrons in simple dielectrics, silicon, diamond, and $\alpha$-quartz are theoretically investigated by first-principles calculations based on time-dependent density functional theory (TDDFT). Dependences on frequency as well as intensity of t...
physics.optics
1807.02734
Homogeneous Real (2,3,5) Distributions with Isotropy
We classify multiply transitive homogeneous real (2,3,5) distributions up to local diffeomorphism equivalence.
math.DG
1807.02735
Coalgebraic Tools for Randomness-Conserving Protocols
We propose a coalgebraic model for constructing and reasoning about state-based protocols that implement efficient reductions among random processes. We provide basic tools that allow efficient protocols to be constructed in a compositional way and analyzed in terms of the tradeoff between state and loss of entropy. ...
cs.LO cs.FL cs.IT math.IT math.PR
1807.02736
Robust Learning of Trimmed Estimators via Manifold Sampling
We adapt a manifold sampling algorithm for the nonsmooth, nonconvex formulations of learning that arise when imposing robustness to outliers present in the training data. We demonstrate the approach on objectives based on trimmed loss. Empirical results show that the method has favorable scaling properties. Although ...
math.OC
1807.02737
A Causal Bootstrap
The bootstrap, introduced by Efron (1982), has become a very popular method for estimating variances and constructing confidence intervals. A key insight is that one can approximate the properties of estimators by using the empirical distribution function of the sample as an approximation for the true distribution fu...
stat.ME
1807.02738
Homogeneous prime elements in normal two-dimensional graded rings
We prove necessary and sufficient conditions for the existence of homogeneous prime elements in normal N-graded rings of dimension two, in terms of rational coefficient Weil divisors on projective curves.
math.AC
1807.02739
Detecting Synapse Location and Connectivity by Signed Proximity Estimation and Pruning with Deep Nets
Synaptic connectivity detection is a critical task for neural reconstruction from Electron Microscopy (EM) data. Most of the existing algorithms for synapse detection do not identify the cleft location and direction of connectivity simultaneously. The few methods that computes direction along with contact location ha...
cs.CV
1807.02740
Data-driven Upsampling of Point Clouds
High quality upsampling of sparse 3D point clouds is critically useful for a wide range of geometric operations such as reconstruction, rendering, meshing, and analysis. In this paper, we propose a data-driven algorithm that enables an upsampling of 3D point clouds without the need for hard-coded rules. Our approach ...
cs.CV cs.CG cs.LG
1807.02741
Algebraic signatures of convex and non-convex codes
A convex code is a binary code generated by the pattern of intersections of a collection of open convex sets in some Euclidean space. Convex codes are relevant to neuroscience as they arise from the activity of neurons that have convex receptive fields. In this paper, we use algebraic methods to determine if a code i...
q-bio.NC cs.DM math.CO
1807.02742
On automorphisms of algebraic curves
An irreducible, algebraic curve $\mathcal X_g$ of genus $g\geq 2$ defined over an algebraically closed field $k$ of characteristic $\mbox{char } \, k = p \geq 0$, has finite automorphism group $\mbox{Aut} (\mathcal X_g)$. In this paper we describe methods of determining the list of groups $\mbox{Aut} (\mathcal X_g)$ ...
math.AG
1807.02743
Outflows in the Seyfert 2 galaxy NGC5643 traced by the [SIII] emission
We use Gemini Multi-Object Spectrograph (GMOS) Integral Field Unit (IFU) observations of the inner 285$\times$400 pc$^2$ region of the Seyfert 2 galaxy NGC 5643 to map the [SIII]$\lambda9069$ emission-line flux distribution and kinematics, as well as the stellar kinematics, derived by fitting the CaII$\lambda\lambda\...
astro-ph.GA
1807.02744
On Eisenstein polynomials and zeta polynomials
Eisenstein polynomials, which were defined by Oura, are analogues of the concept of an Eisenstein series. Oura conjectured that there exist some analogous properties between Eisenstein series and Eisenstein polynomials. In this paper, we provide new analogous properties of Eisenstein polynomials and zeta polynomials....
math.CO math.NT
1807.02745
A Deep Generative Model of Vowel Formant Typology
What makes some types of languages more probable than others? For instance, we know that almost all spoken languages contain the vowel phoneme /i/; why should that be? The field of linguistic typology seeks to answer these questions and, thereby, divine the mechanisms that underlie human language. In our work, we tac...
cs.CL
1807.02746
Prompt neutrinos and intrinsic charm at SHiP
We present a new evaluation of the far-forward neutrino plus antineutrino flux and number of events from charm hadron decays in a 400 GeV proton beam dump experiment like the Search for Hidden Particles (SHiP). Using next-to-leading order perturbative QCD and a model for intrinsic charm, we include intrinsic transver...
hep-ph
1807.02747
On the Complexity and Typology of Inflectional Morphological Systems
We quantify the linguistic complexity of different languages' morphological systems. We verify that there is an empirical trade-off between paradigm size and irregularity: a language's inflectional paradigms may be either large in size or highly irregular, but never both. Our methodology measures paradigm irregularit...
cs.CL
1807.02748
Latent Semantic Analysis Approach for Document Summarization Based on Word Embeddings
Since the amount of information on the internet is growing rapidly, it is not easy for a user to find relevant information for his/her query. To tackle this issue, much attention has been paid to Automatic Document Summarization. The key point in any successful document summarizer is a good document representation. T...
cs.CL
1807.02749
A comprehensive model of the meteoroid environment around Mercury
To characterize the meteoroid environment around Mercury and its contribution to the planet's exosphere, we combined four distinctive sources of meteoroids in the solar system: main-belt asteroids, Jupiter family comets, Halley-type comets, and Oort Cloud comets. All meteoroid populations are described by currently a...
astro-ph.EP
1807.02750
Hybrid quantum system with nitrogen-vacancy centers in diamond coupled to surface phonon polaritons in piezomagnetic superlattices
We investigate a hybrid quantum system where an ensemble of nitrogen-vacancy (NV) centers in diamond is interfaced with a piezomagnetic superlattice that supports surface phonon polaritons (SPhPs). We show that the strong magnetic coupling between the collective spin waves in the NV spin ensemble and the quantized SP...
quant-ph cond-mat.mes-hall
1807.02751
Role of contact work function, back surface field and conduction band offset in CZTS solar cell
We employ simulation based approach for enhancing the efficiency of Cu2ZnSnS4 (CZTS) based solar cells. Initial benchmarking of simulation with the experimentally reported solar cell in literature is performed by incorporating a suitable defect model. We then explore the effects of: (a) conduction band offset (CBO) a...
physics.app-ph cond-mat.mtrl-sci
1807.02752
Real-time stereo vision-based lane detection system
The detection of multiple curved lane markings on a non-flat road surface is still a challenging task for automotive applications. To make an improvement, the depth information can be used to greatly enhance the robustness of the lane detection systems. The proposed system in this paper is developed from our previous...
cs.CV
1807.02753
Beurling-Fourier algebras of compact quantum groups: characters and finite dimensional representations
In this paper we study weighted versions of Fourier algebras of compact quantum groups. We focus on the spectral aspects of these Banach algebras in two different ways. We first investigate their Gelfand spectrum, which shows a connection to the maximal classical closed subgroup and its complexification. Secondly, we...
math.OA math.FA
1807.02754
Model-Free Optimization Using Eagle Perching Optimizer
The paper proposes a novel nature-inspired technique of optimization. It mimics the perching nature of eagles and uses mathematical formulations to introduce a new addition to metaheuristic algorithms. The nature of the proposed algorithm is based on exploration and exploitation. The proposed algorithm is developed i...
cs.NE
1807.02755
An ALE meta-analytic comparison of verbal working memory tasks
Background: The n-back and Paced Auditory Serial Addition Test (PASAT) are commonly used verbal working memory tasks that have partially overlapping uses in clinical and experimental psychology. We performed three activation likelihood estimation (ALE) meta-analyses, comparing two load levels of the n-back task (2-ba...
q-bio.NC
1807.02756
Asymptotic behavior of spectral of Neumann-Poincare operator in Helmhotz system
In this paper, we are concerned with the asymptotic behavior of the Neumann-Poincare operator for Helmholtz system. By analyzing the asymptotic behavior of spherical Bessel function near the origin and/or approach higher order, we prove the asymptotic behavior of spectral of Neumann-Poincare operator when frequency i...
math.AP
1807.02757
Fringe pattern analysis using deep learning
In many optical metrology techniques, fringe pattern analysis is the central algorithm for recovering the underlying phase distribution from the recorded fringe patterns. Despite extensive research efforts for decades, how to extract the desired phase information, with the highest possible accuracy, from the minimum ...
eess.IV
1807.02758
Image Super-Resolution Using Very Deep Residual Channel Attention Networks
Convolutional neural network (CNN) depth is of crucial importance for image super-resolution (SR). However, we observe that deeper networks for image SR are more difficult to train. The low-resolution inputs and features contain abundant low-frequency information, which is treated equally across channels, hence hinde...
cs.CV
1807.02759
The role of angle dependent phase rotations of reaction amplitudes in $\eta$ photoproduction on protons
It has recently been proven that the invariance of observables with respect to angle dependent phase rotations of reaction amplitudes mixes multipoles changing also their relative strength [1]. All contemporary partial wave analyses (PWA) in $\eta$ photoproduction on protons, either energy dependent (ED) [2-5] or sin...
nucl-th nucl-ex
1807.02760
Deterministic positioning of colloidal quantum dots on silicon nitride nanobeam cavities
Engineering an array of precisely located cavity-coupled active media poses a major experimental challenge in the field of hybrid integrated photonics. We deterministically position solution processed colloidal quantum dots (QDs) on high quality-factor silicon nitride nanobeam cavities and demonstrate light-matter co...
physics.optics quant-ph
1807.02761
Topological Characterization of Rigid-Nonrigid Transition across the Frenkel Line
The dynamics of supercritical fluids, a state of matter beyond the gas-liquid critical point, changes from diffusive to oscillatory motions at high pressure. This transition is believed to occur across a locus of thermodynamic states called the Frenkel line. The Frenkel line has been extensively investigated from the...
cond-mat.stat-mech
1807.02762
Arbitrarily large violations of non-contextuality in single mode photon states with positive Wigner function
Banaszek, W\'odkiewicz and others (\cite{Banaszek},\cite{Chen},\cite{Chen-Zhang}) made the surprising discovery that Einstein-Bell locality inequalities can be violated by the two mode squeezed vacuum by a factor $\sqrt{2}$, in spite of the fact that the state has a positive Wigner function. I use here the more gener...
quant-ph
1807.02763
Inference of Population History using Coalescent HMMs: Review and Outlook
Studying how diverse human populations are related is of historical and anthropological interest, in addition to providing a realistic null model for testing for signatures of natural selection or disease associations. Furthermore, understanding the demographic histories of other species is playing an increasingly im...
q-bio.PE
1807.02764
Privacy-aware Distributed Hypothesis Testing
A distributed binary hypothesis testing (HT) problem involving two parties, a remote observer and a detector, is studied. The remote observer has access to a discrete memoryless source, and communicates its observations to the detector via a rate-limited noiseless channel. The detector observes another discrete memor...
cs.IT math.IT
1807.02765
Conditional limit measure of one-dimensional quantum walk with absorbing sink
We consider a two-state quantum walk on a line where after the first step an absorbing sink is placed at the origin. The probability of finding the walker at position $j$, conditioned on that it has not returned to the origin, is investigated in the asymptotic limit. We prove a limit theorem for the conditional proba...
quant-ph
1807.02766
The components of the singular locus of a component of a Springer fiber over x^2 = 0
For $x\in End(K^n)$ satisfying $x^2 = 0$ let $F_x$ be the variety of full flags stable under the action of $x$ (Springer fiber over $x$). The full classification of the components of $F_x$ according to their smoothness was provided in a paper of Fresse-Melnikov in terms of both Young tableaux and link patterns. Moreo...
math.CO
1807.02767
Bounded linear operators in PN-spaces
In this paper, first we present a new useful way of formulating probabilistic normed spaces. Then by using this formulation and probabilistic normed space version of the Baire category theorem, we prove four important results of functional analysis, i.e. the open mapping, closed graph, principle of uniform boundednes...
math.FA
1807.02768
Quasilinear convexity and quasilinear stars in the ray space of a supertropical quadratic form
Relying on rays, we search for submodules of a module V over a supertropical semiring on which a given anisotropic quadratic form is quasilinear. Rays are classes of a certain equivalence relation on V, that carry a notion of convexity, which is consistent with quasilinearity. A criterion for quasilinearity is specif...
math.RA
1807.02769
Degenerate Hamiltonian operator in higher-order canonical gravity -- the problem and a remedy
Different routes towards the canonical formulation of a classical theory result in different canonically equivalent Hamiltonians, while their quantum counterparts are related through appropriate unitary transformation. However, for higher-order theory of gravity, although two Hamiltonians emerging from the same actio...
gr-qc hep-th
1807.02770
Universal entire functions that define order isomorphisms of countable real sets
In 1895, Cantor showed that between every two countable dense real sets, there is an order isomorphism. In fact, there is always such an order isomorphism, which is the restriction of a universal entire function.
math.CV
1807.02771
Ribosome self-assembly leads to overlapping reproduction cycles and increases growth rate
In permissive environments, E. coli can double its dry mass every 21 minutes. During this time, ribosomes, RNA polymerases, and the proteome are all doubled. Yet, the question of how to relate bacterial doubling time to other biologically relevant time scales in the growth process remains illusive, due to the complex...
q-bio.SC
1807.02772
Blow-up of solutions to critical semilinear wave equations with variable coefficients
We verify the critical case $p=p_0(n)$ of Strauss' conjecture (1981) concerning the blow-up of solutions to semilinear wave equations with variable coefficients in $\mathbf{R}^n$, where $n\geq 2$. The perturbations of Laplace operator are assumed to be smooth and decay exponentially fast at infinity. We also obtain a...
math.AP
1807.02773
Online exploration outside a convex obstacle
A watchman path is a path such that a direct line of sight exists between each point in some region and some point along the path. Here, we study the online watchman path problem outside a convex polygon, i.e., in $\mathbb{R}^2\setminus \Omega$, where $\Omega$ is a convex polygon that is not known in advance. We pres...
cs.CG
1807.02774
Evolution and spatial distribution of Brillouin backscattering associated to hybrid acoustic modes in sub-wavelength silica microfibers
The spectral evolution and spatial distribution of backscattered Brillouin signals is experimentally investigated in sub-wavelength silica microfibers. The Brillouin spectrum evolution reveals the different dynamics of the various peaks, offering evidence of backscattering signals induced by acoustic waves with phase...
physics.optics
1807.02775
RBF-LOI: Augmenting Radial Basis Functions (RBFs) with Least Orthogonal Interpolation (LOI) for Solving PDEs on Surfaces
We present a new method for the solution of PDEs on manifolds $\mathbb{M} \subset \mathbb{R}^d$ of co-dimension one using stable scale-free radial basis function (RBF) interpolation. Our method involves augmenting polyharmonic spline (PHS) RBFs with polynomials to generate RBF-finite difference (RBF-FD) formulas. The...
math.NA cs.NA
1807.02776
Densely Connected CNNs for Bird Audio Detection
Detecting bird sounds in audio recordings automatically, if accurate enough, is expected to be of great help to the research community working in bio- and ecoacoustics, interested in monitoring biodiversity based on audio field recordings. To estimate how accurate the state-of-the-art machine learning approaches are,...
cs.SD eess.AS
1807.02777
A Review of Beam-Driven Plasma Wakefield Experiments
In the past decades, beam-driven plasma wakefield acceleration (PWFA) experiments have seen remarkable progress by using high-energy particle beams such as electron, positron and proton beams to drive wakes in neutral gas or pre-ionized plasma. This review highlights a few recent experiments in the world to compare e...
physics.plasm-ph physics.acc-ph
1807.02778
Microcavity enhanced single photon emission from two-dimensional WSe2
Atomically flat semiconducting materials such as monolayer WSe$_2$ hold great promise for novel optoelectronic devices. Recently, quantum light emission has been observed from bound excitons in exfoliated WSe$_2$. As part of developing optoelectronic devices, the control of the radiative properties of such emitters i...
cond-mat.mes-hall physics.optics
1807.02779
Dynamical Systems with a Cyclic Sign Variation Diminishing Property
Several studies analyzed certain nonlinear dynamical systems by showing that the cyclic number of sign variations in the vector of derivatives is an integer-valued Lyapunov function. These results are based on direct analysis of the dynamical equation satisfied by the vector of derivatives, i.e. the variational syste...
math.DS
1807.02780
Finding unavoidable colorful patterns in multicolored graphs
We provide multicolored and infinite generalizations for a Ramsey-type problem raised by Bollob\'as, concerning colorings of $K_n$ where each color is well-represented. Let $\chi$ be a coloring of the edges of a complete graph on $n$ vertices into $r$ colors. We call $\chi$ $\varepsilon$-balanced if all color classes...
math.CO
1807.02781
Displacements of automorphisms of free groups I: Displacement functions, minpoints and train tracks
This is the first of two papers in which we investigate the properties of the displacement functions of automorphisms of free groups (more generally, free products) on Culler-Vogtmann Outer space and its simplicial bordification - the free splitting complex - with respect to the Lipschitz metric. The theory for irred...
math.GR
1807.02782
Displacements of automorphisms of free groups II: Connectivity of level sets and decision problems
This is the second of two papers in which we investigate the properties of displacement functions of automorphisms of free groups (more generally, free products) on the Culler-Vogtmann Outer space $CV_n$ and its simplicial bordification. We develop a theory for both reducible and irreducible autormorphisms. As we rea...
math.GR
1807.02783
CGC/saturation approach: re-visiting the problem of odd harmonics in angular correlations
In this paper we demonstrate that the selection of events with different multiplicities of produced particles, leads to the violation of the azimuthal angular symmetry, $\phi \to \pi - \phi$. We find for LHC and lower energies, that this violation can be so large for the events with multiplicities $n \geq 2 \bar{n}$,...
hep-ph
1807.02784
Discrete quotients of 3-dimensional N = 4 Coulomb branches via the cycle index
The study of Coulomb branches of 3-dimensional N=4 gauge theories via the associated Hilbert series, the so-called monopole formula, has been proven useful not only for 3-dimensional theories, but also for Higgs branches of 5 and 6-dimensional gauge theories with 8 supercharges. Recently, a conjecture connected diffe...
hep-th
1807.02785
Flowing from 16 to 32 Supercharges
We initiate a study of an infinite set of renormalization group flows with accidental supersymmetry enhancement. The ultraviolet fixed points are strongly interacting four-dimensional $\mathcal{N}=2$ superconformal field theories (SCFTs) with no known Lagrangian descriptions, and the infrared fixed points are SCFTs w...
hep-th
1807.02786
Graduality from Embedding-projection Pairs (Extended Version)
Gradually typed languages allow statically typed and dynamically typed code to interact while maintaining benefits of both styles. The key to reasoning about these mixed programs is Siek-Vitousek-Cimini-Boyland's (dynamic) gradual guarantee, which says that giving components of a program more precise types only adds ...
cs.PL
1807.02787
Financial Trading as a Game: A Deep Reinforcement Learning Approach
An automatic program that generates constant profit from the financial market is lucrative for every market practitioner. Recent advance in deep reinforcement learning provides a framework toward end-to-end training of such trading agent. In this paper, we propose an Markov Decision Process (MDP) model suitable for t...
q-fin.TR cs.LG stat.ML
1807.02788
Bioadhesive Graft-Antenna for Stimulation and Repair of Peripheral Nerves
Peripheral nerve injuries are difficult to treat due to limited axon regeneration; brief electrical stimulation of injured nerves is an emerging therapy that can relieve pain and enhance regeneration. We report an original wireless stimulator based on a metal loop (diameter ~1 mm) that is powered by a transcranial ma...
physics.med-ph
1807.02789
The modal age of Statistics
Recently, a number of statistical problems have found an unexpected solution by inspecting them through a "modal point of view". These include classical tasks such as clustering or regression. This has led to a renewed interest in estimation and inference for the mode. This paper offers an extensive survey of the tra...
stat.ME stat.ML
1807.02790
On the complexity of quasiconvex integer minimization problem
In this paper, we consider the class of quasiconvex functions and its proper subclass of conic functions. The integer minimization problem of these functions is considered in the paper, assuming that an optimized function is defined by the comparison oracle. We will show that there is no a polynomial algorithm on $\l...
math.OC cs.CC
1807.02791
Is breaking of ensemble equivalence monotone in the number of constraints?
Breaking of ensemble equivalence between the microcanonical ensemble and the canonical ensemble may occur for random graphs whose size tends to infinity, and is signaled by a non-zero specific relative entropy of the two ensembles. In [3] and [4] it was shown that breaking occurs when the constraint is put on the deg...
cond-mat.stat-mech math-ph math.MP