Results for "Hossein Yazdani"

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Bounded Fuzzy Possibilistic MethodFeb 08 2019This paper introduces Bounded Fuzzy Possibilistic Method (BFPM) by addressing several issues that previous clustering/classification methods have not considered. In fuzzy clustering, object's membership values should sum to 1. Hence, any object may obtain ... More
Field Equations and Radial Solution in a Noncommutative Spherically Symmetric GeometryDec 09 2014We study a noncommutative theory of gravity in the framework of torsional spacetime. This theory is based on a Lagrangian obtained by applying the technique of dimensional reduction of noncommutative gauge theory and that the yielded diffeomorphism invariant ... More
Effect of Blast Exposure on Gene-Gene InteractionsSep 13 2018Nov 09 2018Repeated exposure to low-level blast may initiate a range of adverse health problem such as traumatic brain injury (TBI). Although many studies successfully identified genes associated with TBI, yet the cellular mechanisms underpinning TBI are not fully ... More
SESA: Supervised Explicit Semantic AnalysisAug 10 2017In recent years supervised representation learning has provided state of the art or close to the state of the art results in semantic analysis tasks including ranking and information retrieval. The core idea is to learn how to embed items into a latent ... More
A complex network approach to robustness and vulnerability of spatially organized water distribution networksAug 10 2010Aug 11 2010In this work, water distribution systems are regarded as large sparse planar graphs with complex network characteristics and the relationship between important topological features of the network (i.e. structural robustness and loop redundancy) and system ... More
A note on measurement of network vulnerability under random and intentional attacksJun 14 2010Jan 11 2011In this paper we propose an alternative approach for the assessment of network vulnerability under random and intentional attacks as compared to the results obtained from the "vulnerability function" given by Criado et al. [Criado et al. (Int. J. Comput. ... More
Finite element solution of multi-scale transport problems using the least squares based bubble function enrichmentJan 10 2011This paper presents an optimum technique based on the least squares method for the derivation of the bubble functions to enrich the standard linear finite elements employed in the formulation of Galerkin weighted-residual statements. The element-level ... More
On the greatest prime factor of some divisibility sequencesMay 24 2015Let $P(m)$ denote the greatest prime factor of $m$. For integer $a>1$, M. Ram Murty and S. Wong proved that, under the assumption of the ABC conjecture, $$P(a^n-1)\gg_{\epsilon, a} n^{2-\epsilon}$$ for any $\epsilon>0$. We study analogues results for ... More
Variation of mass in primordial nucleosynthesis as a test of Induced Matter Brane GravityMay 20 2008The variation of mass in induced matter theory using Ceroch-Stewart-Walter perturbations of submanifolds [1] is redefined. It is shown that the deviation of primordial Helium production due to a variation on the difference between the rest mass of the ... More
Quotients of Ultragraph C*-AlgebrasNov 25 2015Let $\mathcal{G}$ be an ultragraph and $C^*(\mathcal{G})$ be its $C^*$-algebra defined by Tomforde. If $I_{(H,B)}$ is a gauge invariant ideal of $C^*(\mathcal{G})$, we investigate structure of the quotient $C^*(\mathcal{G})/I_{(H,B)}$ by introducing the ... More
Time and Dirac Observables in Friedmann CosmologiesJan 28 2008A cosmological time variable is emerged from the Hamiltonian formulation of Friedmann model to measure the evolution of dynamical observables in the theory. A set of observables has been identified for the theory on the null hypersurfaces that its evolution ... More
Meromorphic connections on $\P1$ and the multiplicity of Abelian integralsMar 07 2002Apr 03 2002In this paper we introduce the concept of Abelian integrals in differential equations for an arbitrary vector bundle on $\P1$ with a meromorphic connection. In this general context we give an upper bound for the numbers we are looking for.
Moduli of polarized Hodge structuresFeb 21 2008Around 1970 Griffiths introduced the moduli of polarized Hodge structures/the period domain $D$ and described a dream to enlarge $D$ to a moduli space of degenerating polarized Hodge structures. Since in general $D$ is not a Hermitian symmetric domain, ... More
Approximating fixed points of asymptotically nonexpansive mappings in Banach spaces by metric projectionsNov 30 2011In this paper, a strong convergence theorem for asymptotically nonexpansive mappings in a uniformly convex and smooth Banach space is proved by using metric projections. This theorem extends and improves the recent strong convergence theorem due to Matsushita ... More
Ideal structure of Leavitt path algebras with coefficients in a unital commutative ringFeb 24 2012Oct 28 2012Let $E$ be an arbitrary (countable) graph and let $R$ be a unital commutative ring. We analyze the ideal structure of the Leavitt path algebra $\lr$ introduced by Mark Tomforde. We first modify the definition of basic ideals and we then develop the ideal ... More
Mixed Hodge structure of affine hypersurfacesJul 05 2004Aug 30 2006In this article we introduce the mixed Hodge structure of the Brieskorn module of a polynomial $f$ in $\C^{n+1}$, where $f$ satisfies a certain regularity condition at infinity (and hence has isolated singularities). We give an algorithm which produces ... More
Special components of Noether-Lefschetz lociAug 12 2019We take a sum $C_1+r C_2,\ r\in\mathbb Q$ of a line $C_1$ and a complete intersection curve $C_2$ of type $(3,3)$ inside a smooth surface of degree $8$ and with $C_1\cap C_2=\emptyset$. We gather evidences to the fact that for all except a finite number ... More
Five-dimensional heterotic black holes and its dual IR-CFTDec 19 2012Jan 16 2013We analyze the possible dynamical emergence of IR conformal field theory describing the low- energy excitations of near-extremal black holes in five-dimensional compactification of heterotic strings. We find that, by tuning the mass and charges in such ... More
A Characterization of Inner Product Spaces Related to the Skew-Angular DistanceJan 06 2013A new refinement of the triangle inequality is presented in normed linear spaces. Moreover, a simple characterization of inner product spaces is obtained by using the skew-angular distance.
World-line observables and clocks in General RelativityJun 07 2004Nov 20 2005A proposal for the issue of time and observables in any parameterized theory such as general relativity is addressed. Introduction of a gauge potential 3-form A in the theory of relativity enables us to define a gauge-invariant quantity which can be used ... More
Dilatonic Brans-Dicke Anisotropic Collapsing Fluid Sphere And de Broglie Quantum Wave MotionJul 28 2014Jul 07 2016Two dimensional (2D) analogue of vacuum sector of the Brans Dicke (BD) gravity [1] is studied to obtain dynamics of anisotropic spherically symmetric perfect fluid. Our obtained static solutions behave as dark matter with state equation $\gamma=\frac{p(\rho)}{\varrho}=-0.25$ ... More
Wave function of the Universe, Preferred reference frame effects and metric signature transitionJun 07 2013Apr 14 2015Gravitational model of non-minimally coupled Brans Dicke (BD) scalar field $\phi$ with dynamical unit time-like four vector field is used to study flat Robertson Walker (RW) cosmology in the presence of variable cosmological parameter $V(\phi)=\Lambda\phi.$ ... More
Anisotropic Spherically Symmetric Collapsing Star From Higher Order Derivative Gravity TheoryDec 01 2015Adding linear combinations $R^2,R_{\mu\nu}R^{\mu\nu}$ and $R_{\mu\nu\eta\delta}R^{\mu\nu\eta\delta}$ with Einstein-Hilbert action we obtain interior metric of an an-isotropic spherically symmetric collapsing (ASSC) stellar cloud. We assume stress tensor ... More
Greenlees-May Duality in a NutshellJun 19 2017This expository article delves into the Greenlees-May Duality Theorem which is widely thought of as a far-reaching generalization of the Grothendieck's Local Duality Theorem. This theorem is not addressed in the literature as it merits and its proof is ... More
Relative Cohomology with Respect to a Lefschetz PencilDec 19 2001May 11 2005Let $M$ be a complex projective manifold of dimension $n+1$ and $f$ a meromorphic function on $M$ obtained by a generic pencil of hyperplane sections of $M$. The $n$-th cohomology vector bundle of $f_0=f|_{M-\RR}$, where $\RR$ is the set of indeterminacy ... More
Some properties of generalized and approximately dual frames in Hilbert spacesSep 25 2015In the present paper, some sufficient and necessary conditions for two frames $\Phi=(\varphi_n)_n$ and $\Psi=(\psi_n)_n$ under which they are approximately or generalized dual frames are determined depending on the properties of their analysis and synthesis ... More
Five-dimensional EVH heterotic black holes and its dual IR-CFTJan 16 2013We analyze the possible dynamical emergence of IR conformal field theory describing the low-energy excitations of near-extremal black holes in five-dimensional compactification of heterotic strings. We find that, by tuning the mass and charges in such ... More
Simplicity and Pure Infiniteness of Kumjian-Pask AlgebrasAug 27 2016Sep 28 2016In this article, we focus on the purely infinite and simple Kumjian-Pask algebras. Given any finitely aligned higher-rank graph $\Lambda$ and unital commutative ring $R$, the Kumjian-Pask algebra $\mathrm{KP}_R(\Lambda)$ is a higher-rank generalization ... More
EVH Black Hole Solutions With Higher Derivative CorrectionsJan 17 2013We analyze the effect of higher derivative corrections to the near horizon geometry of the extremal vanishing horizon (EVH) black hole solutions in four dimensions. We restrict ourselves to the Gauss-Bonnet correction with a dilation dependent coupling ... More
Time and Observables in Unimodular General RelativityJan 29 2008Jun 09 2011A cosmological time variable is emerged from the hamiltonian formulation of unimodular theory of gravity to measure the evolution of dynamical observables in the theory. A set of constants of motion has been identified for the theory on the null hypersurfaces ... More
On algebraic structures of the Hochschild complexFeb 26 2013Jul 16 2015We first review various known algebraic structures on the Hochschild (co)homology of a differential graded algebras under weak Poincar{\'e} duality hypothesis, such as Calabi-Yau algebras, derived Poincar{\'e} duality algebras and closed Frobenius algebras. ... More
Spherically symmetric curved space times from quantum fields backreaction corrections in two dimensional analogueJun 12 2014Sep 07 2016Aim of the paper is to obtain 2d analogue of the backreaction equation which will be useful to study final state of quantum perturbed spherically symmetric curved space times. Thus we take Einstein-massless-scalar $\psi$ tensor gravity model described ... More
Non-simple purely infinite Steinberg Algebras with applications to Kumjian-Pask algebrasJan 21 2019In this paper, we characterize properly purely infinite Steinberg algebras $A_K(\mathcal{G})$ for strongly effective, ample Hausdorff groupoids $\mathcal{G}$. As an application, when $\Lambda$ is a strongly aperiodic $k$-graph, we show that the notions ... More
On the b-chromatic number of Kneser GraphsApr 25 2009May 26 2009In this note, we prove that for any integer $n\geq 3$ the b-chromatic number of the Kneser graph $KG(m,n)$ is greater than or equal to $2{\lfloor {m\over 2} \rfloor \choose n}$. This gives an affirmative answer to a conjecture of [6].
Interactive Physics-Inspired Traffic Congestion ManagementJun 26 2019This paper proposes a new physics-based approach to effectively control congestion in a network of interconnected roads (NOIR). The paper integrates mass flow conservation and diffusion-based dynamics to model traffic coordination in a NOIR. The mass ... More
Center conditions for polynomial differential equations: discussion of some problemsDec 15 2005Classifications of irreducible components of the set of polynomial differential equations with a fixed degree and with at least one center singularity lead to some other new problems on Picard-Lefschetz theory and Brieskorn modules of polynomials. In ... More
Center conditions: Rigidity of logarithmic differential equationsMay 07 2002Jul 05 2004In this paper we prove that any degree $d$ deformation of a generic logarithmic polynomial differential equation with a persistent center must be logarithmic again. This is a generalization of Ilyashenko's result on Hamiltonian differential equations. ... More
Invariances of the operator properties of frame multipliers under perturbations of frames and symbolAug 21 2016Let $\Phi$ and $\Psi$ be frames for $\cal H$ and let $M_{m,\Phi,\Psi}$ be a frame multiplier with the symbol $m$. In this paper, we restrict our investigation to show that the operator properties of $M_{m,\Phi,\Psi}$ are stable under the perturbations ... More
First Non-abelian Cohomology of Topological Groups IIJul 18 2014Dec 22 2014In this paper we introduce a new definition of the first non-abelian cohomology of topological groups. We relate the cohomology of a normal subgroup $N$ of a topological group $G$ and the quotient $G/N$ to the cohomology of $G$. We get the inflation-restriction ... More
Closed Form for Some Gaussian ConvolutionsFeb 10 2016Mar 07 2016The convolution of a function with an isotropic Gaussian appears in many contexts such as differential equations, computer vision, signal processing, and numerical optimization. Although this convolution does not always have a closed form expression, ... More
Training Recurrent Neural Networks by DiffusionJan 16 2016Feb 04 2016This work presents a new algorithm for training recurrent neural networks (although ideas are applicable to feedforward networks as well). The algorithm is derived from a theory in nonconvex optimization related to the diffusion equation. The contributions ... More
On the Hochschild homology of open Frobenius algebrasSep 13 2013Jun 27 2015We prove that the shifted Hochschild chain complex $C\_*(A,A)[m]$ of a symmetric open Frobenius algebra $A$ of degree $m$ has a natural homotopy coBV-algebra structure. As a consequence $HH\_*(A,A)[m]$ and $HH^*(A,A^\vee)[-m]$ are respectively coBV and ... More
Why should one compute periods of algebraic cycles?Feb 21 2016In this article we show how the data of integrals of algebraic differential forms over algebraic cycles can be used in order to prove that algebraic and Hodge cycle deformations of a given algebraic cycle are equivalent. We verify this equivalence for ... More
On EVH black hole solution in Heterotic string theoryDec 16 2012We study the near horizon geometry of charged rotating black holes in toroidal compactifications of heterotic string theory. We analyze the extremal vanishing horizon (EVH) limit for these black hole solu- tions and we will show that the near horizon ... More
Cosmological Solution from D-brane motion in NS5-Branes backgroundJul 10 2004Apr 13 2005We study dynamics of a D3-brane propagating in the vicinity of k coincident NS5 branes. We show that when $g_s$ is small, there exists a regime in which dynamics of the D-brane is governed by Dirac-Born-Infeld action while higher order derivative in the ... More
Canonical quantization of anisotropic Bianchi I cosmology from scalar vector tensor Brans Dicke gravityApr 09 2019We applied a generalized scalar-vector-tensor Brans Dicke gravity model to study canonical quantization of an anisotropic Bianchi I cosmological model. Regarding an anisotropic Harmonic Oscillator potential we show that the corresponding Wheeler de Witt ... More
Speaker Verification using Convolutional Neural NetworksMar 14 2018Aug 10 2018In this paper, a novel Convolutional Neural Network architecture has been developed for speaker verification in order to simultaneously capture and discard speaker and non-speaker information, respectively. In training phase, the network is trained to ... More
On String Topology of Three ManifoldsOct 08 2003Nov 20 2003Let $M$ be a closed, oriented and smooth manifold of dimension $d$. Let $\L M$ be the space of smooth loops in $M$. Chas and Sullivan introduced loop product, a product of degree $-d$ on the homology of $LM$. In this paper we show how for three manifolds ... More
Standard Projective Simplicial Kernels and the Second Abelian Cohomology of Topological GroupsFeb 08 2015Let $A$ be an abelian topological $G$-module. We give an interpretion for the second cohomology, $H^{2}(G,A)$, of $G$ with coefficients in $A$. As a result we show that if $P$ is a projective topological group, then $H^{2}(P,A)=0$ for every abelian topological ... More
First Non-Abelian Cohomology of Topological GroupsDec 22 2014Let $G$ be a topological group and $A$ a topological $G$-module (not necessarily abelian). In this paper, we define $H^{0}(G,A)$ and $H^{1}(G,A)$ and will find a six terms exact cohomology sequence involving $H^{0}$ and $H^{1}$. We will extend it to a ... More
On Topological Structure of the First Non-abelian Cohomology of Topological GroupsFeb 17 2014Aug 19 2014Let $G$, $R$ and $A$ be topological groups. Suppose that $G$ and $R$ act continuously on $A$, and $G$ acts continuously on $R$. In this paper, we define a partially crossed topological $G-R$-bimodule $(A,\mu)$, where $\mu:A\rightarrow R$ is a continuous ... More
Link Prediction in Real-World Multiplex Networks via Layer Reconstruction MethodJun 22 2019A large body of research on link prediction problem is devoted to finding missing links in single-layer (simplex) networks. The proposed link prediction methods compute a similarity measure between unconnected node pairs based on the observed structure ... More
Classical and Quantum Reissner-Nordström Black Hole Thermodynamics and first order Phase TransitionAug 03 2013Dec 17 2015First we consider CRNBH metric which is obtained by solving Einstein-Maxwell metric equation for a point electric charge $e$ inside of a spherical static body with mass $M$. It has 2 interior and exterior horizons. Using Bekenestein-Hawking entropy theorem ... More
Spherically symmetric Jordan-Brans-Dicke quantum gravity with de Broglie Bohm pilot wave perspectiveSep 23 2013Jan 24 2014We obtain two dimensional analogue of the Jordan-Brans-Dicke (JBD) gravity action described in four dimensional spherically symmetric curved space time metric. There will be two scalar fields, namely, the Brans Dicke (BD) $\phi$ and scale factor of 2-sphere ... More
A Generalization of Kneser's ConjectureJun 18 2009Jan 06 2010We investigate some coloring properties of Kneser graphs. A star-free coloring is a proper coloring $c:V(G)\to \Bbb{N}$ such that no path with three vertices may be colored with just two consecutive numbers. The minimum positive integer $t$ for which ... More
On Colorings of Graph PowersAug 06 2007Mar 28 2008In this paper, some results concerning the colorings of graph powers are presented. The notion of helical graphs is introduced. We show that such graphs are hom-universal with respect to high odd-girth graphs whose $(2t+1)$st power is bounded by a Kneser ... More
$\mathbb{F}_p$ and $Z_p$ Valued Holomorphic Functions over GraphsDec 24 2016The definition of a holomorphic function over a general measurable space $S$ endowed with a Markov process is defined by Zeghib and Barre. In this article we consider holomorphic functions over graphs whose ranges are a given finite field or a cyclic ... More
Calculation of mixed Hodge structures, Gauss-Manin connections and Picard-Fuchs equationsDec 13 2004In this article we introduce algorithms which compute iterations of Gauss-Manin connections, Picard-Fuchs equations of Abelian integrals and mixed Hodge structure of affine varieties of dimension $n$ in terms of differential forms. In the case $n=1$ such ... More
Abelian integrals in holomorphic foliationsMar 07 2002Jul 05 2004The aim of this paper is to introduce the theory of Abelian integrals for holomorphic foliations in a complex manifold of dimension two. We will show the importance of Picard-Lefschetz theory and the classification of relatively exact 1-forms in this ... More
On the Topology of Foliations with a First IntegralJun 07 2002The main objective of this article is to study the topology of the fibers of a generic rational function of the type $F^p/G^q$ in the projective space of dimension two. We will prove that the action of the monodromy group on a single Lefschetz vanishing ... More
The Signs in Elliptic NetsFeb 26 2017We give a generalization of a theorem of Silverman and Stephens regarding the signs in an elliptic divisibility sequence to the case of an elliptic net. We also describe applications of this theorem in the study of the distribution of the signs in elliptic ... More
A blind robust watermarking method based on Arnold Cat map and amplified pseudo-noise strings with weak correlationMar 30 2018In this paper, a robust and blind watermarking method is proposed, which is highly resistant to the common image watermarking attacks, such as noises, compression, and image quality enhancement processing. In this method, Arnold Cat map is used as a pre-processing ... More
Fast Artificial Immune SystemsJun 01 2018Various studies have shown that characteristic Artificial Immune System (AIS) operators such as hypermutations and ageing can be very efficient at escaping local optima of multimodal optimisation problems. However, this efficiency comes at the expense ... More
Insights into Complex Brain Functions Related to Schizophrenia Disorder through Causal Network AnalysisJul 31 2018Gene expression represents a fundamental interface between genes and environment in the development and ongoing plasticity of the human organism. Individual differences in gene expression are likely to underpin much of human diversity, including psychiatric ... More
Power Adaptation for Distributed Detection in Energy Harvesting WSNs with Finite-Capacity BatteryAug 15 2019We consider a wireless sensor network, consisting of N heterogeneous sensors and a fusion center (FC), that is tasked with solving a binary distributed detection problem. Each sensor is capable of harvesting randomly arrived energy and storing it in a ... More
Hopf-cyclic cohomology of the Connes-Moscovici Hopf algebras with infinite dimensional coefficientsMay 22 2017Aug 15 2017We discuss a new strategy for the computation of the Hopf-cyclic cohomology of the Connes-Moscovici Hopf algebra $\mathcal{H}_n$. More precisely, we introduce a multiplicative structure on the Hopf-cyclic complex of $\mathcal{H}_n$, and we show that the ... More
Localization of gravity in brane world with arbitrary extra dimensionsMar 16 2012Sep 16 2012We study the induced 4-dimensional linearized Einstein field equations in an m-dimensional bulk space by means of a confining potential. It is shown that in this approach the mass of graviton is quantized. The cosmological constant problem is also addressed ... More
Shiba chains of scalar impurities on unconventional superconductorsDec 30 2015We show that a chain of nonmagnetic impurities deposited on a fully gapped two- or three-dimensional superconductor can become a topological one-dimensional superconductor with protected Majorana bound states at its end. A prerequisite is that the pairing ... More
High Capacity Image Data Hiding of Scanned Text Documents Using Improved QuadtreeMar 29 2018In this paper, an effective method was introduced to steganography of text document in the host image. In the available steganography methods, the message has a random form. Therefore, the embedding capacity is generally low. In the proposed method, the ... More
SUT System Description for NIST SRE 2016Jun 08 2017This paper describes the submission to fixed condition of NIST SRE 2016 by Sharif University of Technology (SUT) team. We provide a full description of the systems that were included in our submission. We start with an overview of the datasets that were ... More
On Dynamics of Brans--Dicke Theory of GravitationAug 05 2010Jun 08 2011We study longstanding problem of cosmological clock in the context of Brans-Dicke theory of gravitation. We present the Hamiltonian formulation of the theory for a class of spatially homogenous cosmological models. Then, we show that formulation of the ... More
On 1/2 BPS Solutions in M-theoryDec 17 2005Jan 19 2006We study singular 1/2 BPS solutions in M-theory using 11-dimensional superstar solutions. The superstar solutions and their corresponding plane wave limits could give an insight how one may deform the boundary conditions to get singular, but still physically ... More
Network Coding Applications for 5G Millimeter-Wave CommunicationsDec 09 2015The millimeter-wave bands have been attracting significant interest as a means to achieve major improvements in data rates and network efficiencies. One significant limitation for use of the millimeter-wave bands for cellular communication is that the ... More
Charge Transfer in Ultracold Rydberg-Ground State Atomic CollisionsDec 08 2015In excited molecules, the interaction between the covalent Rydberg and ion-pair channels forms a unique class of excited Rydberg states, in which the infinite manifold of vibrational levels are the equivalent of atomic Rydberg states with a heavy electron ... More
A Note on Altermatic NumberOct 23 2015In view of Tucker's lemma (an equivalent combinatorial version of the Borsuk- Ulam theorem), the present authors (2013) introduced the kth altermatic number of a graph G as a tight lower bound for the chromatic number of G. In this note, we present a ... More
On Coloring Properties of Graph PowersApr 22 2011This paper studies some coloring properties of graph powers. We show that $\chi_c(G^{^{\frac{2r+1}{2s+1}}})=\frac{(2s+1)\chi_c(G)}{(s-r)\chi_c(G)+2r+1}$ provided that $\chi_c(G^{^{\frac{2r+1}{2s+1}}})< 4$. As a consequence, one can see that if ${2r+1 ... More
Graph Powers and Graph HomomorphismsAug 04 2008Sep 02 2008In this paper we investigate some basic properties of fractional powers. In this regard, we show that for any rational number $1\leq {2r+1\over 2s+1}< og(G)$, $G^{{2r+1\over 2s+1}}\longrightarrow H$ if and only if $G\longrightarrow H^{-{2s+1\over 2r+1}}.$ ... More
On the Dynamics of Bianchi IX cosmological modelsJan 08 2010A cosmological description of the universe is proposed in the context of Hamiltonian formulation of a Bianchi IX cosmology minimally coupled to a massless scalar field. The classical and quantum results are studied with special attention to the case of ... More
Physical Picture of the Insurance MarketApr 28 2004We find the wealth distribution for an economic agent in the financial market, in analogy with standard derivation of generaliz Boltzman (Tsallis) factor in statistical mechanics. In this respect, Tsallis entropic index separates two different regimes, ... More
Analysis of B to J a1(1260)in pertubative QCD approachDec 26 2014In this paper, we analyse the hadronic decay of B to J a1(1260) in pertubative QCD approach (pQCD), where a1(1260) is a axial-vector meson and J{psi} is a vector meson.
Spin-dependent thermoelectric effects in graphene based superconductor junctionsDec 05 2016Using the Bogoliubov de-Gennes formalism, we investigate the charge and spin-dependent thermoelectric effects in superconductor graphene junctions. Results demonstrate that despite normal-superconductor junctions, there is a temperature-dependent spin ... More
Chromatic Number Via Turan NumberDec 31 2013Oct 23 2015A Kneser representation KG(H) for a graph G is a bijective assignment of hyperedges of a hypergraph H to the vertices of G such that two vertices of G are adjacent if and only if the corresponding hyperedges are disjoint. In this paper, we introduce a ... More
Stochastic and Chance-Constrained Conic Distribution System Expansion Planning Using Bilinear Benders DecompositionApr 01 2017Second order conic programming (SOCP) has been used to model various applications in power systems, such as operation and expansion planning. In this paper, we present a two-stage stochastic mixed integer SOCP (MISOCP) model for the distribution system ... More
Scalar Split WIMPs in the Future Direct Detection ExperimentsDec 31 2014Feb 20 2016We consider a simple renormalizable dark matter model consisting of two real scalars with a mass splitting $\delta$, interacting with the SM particles through the Higgs portal. We find a viable parameter space respecting all the bounds imposed by invisible ... More
Semi-fragile Tamper Detection and Recovery based on Region Categorization and Two-Sided Circular Block DependencyApr 08 2018This paper presents a new semi-fragile algorithm for image tamper detection and recovery, which is based on region attention and two-sided circular block dependency. This method categorizes the image blocks into three categories according to their texture. ... More
The Last Lost Charge And Phase Transition In Schwarzschild AdS Minimally Coupled to a Cloud of StringsJun 14 2018Aug 04 2018In this paper we study the Schwarzschild AdS black hole with a cloud of string background in an extended phase space and investigate a new phase transition related to the topological charge. By treating the topological charge as a new charge for black ... More
Dynamical generation of superconducting order of different symmetries in hexagonal latticesMar 05 2017Nov 02 2017The growth of superconducting order after an interaction quench in a hexagonal lattice is studied. The cases of both time-reversal (TR) preserving graphene, as well as the TR broken Haldane model are explored. Spin singlet superconducting order is studied ... More
Vortex bound states of charge and magnetic fluctuations-induced topological superconductors in heterostructuresApr 22 2019Apr 27 2019The helical electron states on the surface of topological insulators or elemental Bismuth become unstable toward superconducting pairing formation when coupled to the charge or magnetic fluctuations. The latter gives rise to pairing instability in chiral ... More
A New Integrated FQFD Approach for Improving Quality and Reliability of Solar Drying SystemsApr 21 2017Saffron is the most expensive spice and is significantly valuable in non-oil export. Drying process of saffron is considered as a critical control point with major effects on quality and safety parameters. A suitable drying method covering standards and ... More
A strong-weak coupling duality between two perturbed quantum many-body systems: CSS codes and Ising-like systemsOct 07 2017Graphs and recently hypergraphs have been known as an important tool for considering different properties of quantum many-body systems. In this paper, we study a mapping between an important class of quantum systems namely quantum Calderbank-Shor-Steane ... More
A Range Matching CAM for Hierarchical Defect Tolerance Technique in NRAM StructuresJul 10 2019Due to the small size of nanoscale devices, they are highly prone to process disturbances which results in manufacturing defects. Some of the defects are randomly distributed throughout the nanodevice layer. Other disturbances tend to be local and lead ... More
Spectator model in D meson DecaysOct 14 2006In this research we describe effective Hamiltonian theory and apply this theory to the calculation of current-current $Q_{12}$ and QCD penguin $Q_{3...6}$ decay rates We calculate the decay rates of semileptonic and hadronic of charm quark in effective ... More
An Initial Study on Load Forecasting Considering Economic FactorsMar 19 2017This paper proposes a new objective function and quantile regression (QR) algorithm for load forecasting (LF). In LF, the positive forecasting errors often have different economic impact from the negative forecasting errors. Considering this difference, ... More
A Summary Of The Kernel Matrix, And How To Learn It Effectively Using Semidefinite ProgrammingSep 18 2017Kernel-based learning algorithms are widely used in machine learning for problems that make use of the similarity between object pairs. Such algorithms first embed all data points into an alternative space, where the inner product between object pairs ... More
A Modified Dynamical Model of Cosmology I. TheoryOct 11 2018Jun 12 2019Wheeler (1964) had formulated Mach's principle as the boundary condition for general relativistic field equations. Here, we use this idea and develop a modified dynamical model of cosmology based on imposing Neumann boundary condition on cosmological ... More
Ising order parameter and topological phase transitions: Toric code in uniform fieldJul 14 2019Quantum Ising model in a transverse field is of the simplest quantum many body systems used for studying universal properties of quantum phase transitions. Interestingly, it has been shown that such phase transitions can be mapped to topological phase ... More
Conformally Lifshitz solutions from Horava-Lifshitz GravityDec 17 2012Oct 30 2014We show that the IR action of the healthy non-projectable Ho\v{r}ava-Lifshitz (HL) gravity and its small modification exhibit asymptotically Lifshitz and hyperscaling violating solutions, respectively. The model may also have an AdS$_2\times R^d$ vacuum ... More
Supergravity Description of the Large N Noncommutative Dipole Field TheoriesFeb 20 2002We consider system of Dp-branes in the presence of a nonzero B field with one leg along brane worldvolume and the other transverse to it. We study the corresponding supergravity solutions and show that the worldvolume theories decouple from gravity for ... More
Euler & Lagrange versus Heisenberg & Schroedinger: Dynamical Pictures in Classical and Quantum MechanicsMay 22 2013Using quantum-classical analogies, we find that dynamical pictures of quantum mechanics have precise counterparts in classical mechanics. In particular, the Eulerian and Lagrangian descriptions of fluid dynamics in classical mechanics are the analogs ... More
Universal Measure of EntanglementAug 09 2003Nov 18 2003A general framework is developed for separating classical and quantum correlations in a multipartite system. Entanglement is defined as the difference in the correlation information encoded by the state of a system and a suitably defined separable state ... More