Communications in Physics
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Extensive Air Showers and the LPM Effect
Communications in Physics - Tập 20 Số 2 - 2010
A very simple model of thelongitudinal development of electromagnetic showers is presented,allowing for easy calculations at the highest energies where usualsimulation codes become impracticable because of the enormousmultiplicity of secondary shower particles. Shower profiles aredescribed in terms of a few parameters having Gaussianfluctuations. The model is applied to the impact of theLandau-Pom......
Enhanced Performance in Polymer Light Emmiting Diode by Using Ultra-thin Conductive Films as the Buffer Layer
Communications in Physics - Tập 24 Số 3S1 - 2014
The ultra-thin nanocomposite films based on the nano-crystal TiO$_{2}$ (TiO$_{2}$-nc) or multi-walled carbon nano-tube (MWCNTs) were prepared and used as the buffer layers in the fabrication of the organic light-emitting diodes (OLEDs). The injection efficiency of the hole and electron was improved by inserting an ultra-thin buffer layer between the electrodes and emissive layer. The turn-on ......
#nanocomposites #conducting polymer #blended polymer #light emitting diode #CNTs.
Challenges in particle physics and 3-3-1 models
Communications in Physics - Tập 25 Số 2 - 2015
At present, particle physics faces problems related with disparity in diphoton decay of Higgs boson, discrepancybetween theory and experiment of about $3.6 \si$ in anomalous magnetic moment of the muon and neutrino physics.Moreover, the existence of Dark Matter and the Matter-Antimatter Asymmetry are challenges for any physical model.In this review I present some solutions in the framework ......
#Particle-theory and field-theory models %of the early Universe #Supersymmetric models #Non-standard-model %neutrinos #right-handed neutrinos
Quasi Three-parametric \(R\)-matrix and Quantum Supergroups \(GL_{p,q}(1/1)\) and \(U_{p,q}[\textit{gl}(1/1)]\)
Communications in Physics - Tập 29 Số 4 - 2019
An overparametrized (three-parametric) R-matrix satisfying a graded Yang-Baxter equation is introduced. It turns out that such an overparametrization is very helpful. Indeed, this R-matrix with one of the parameters being auxiliary, thus, reducible to a two-parametric R-matrix, allows the construction of quantum supergroups GLp,q(1/1) and Up,q[gl(1/1)] which, respectively, are two-parametric defor......
#Quantum supergroup #R-matrix #Drinfel'd-Jimbo deformation #Multi- parametric quantum deformation
Photoluminescence Quenching of Nanocomposite Materials Used for Organic Solar Cells
Communications in Physics - Tập 24 Số 3S1 - 2014
In this work, we have studied the photoluminescence (PL) quenching of two polymeric composites, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and poly(3-hexylthiophene) (P3HT) in presence of nc-TiO\(_{2}\) particles by PL- spectroscopy. PL quenching values are 19.2\(\text{\%}\) and 45.5\(\text{\%}\), for MEH-PPV+nc-TiO\(_{2}\) and P3HT+nc-TiO$_{2}$, respectively. The obt......
#photoluminescence (PL) quenching #nc-TiO$_{2}$ #MEH-PPV nc-TiO$_{2}$ #P3HT nc-TiO$_{2}$ #heterojunctions #organic solar cell (OSC)
Observation of High Doppler Velocity Wings in the Nascent Wind of R Doradus
Communications in Physics - Tập 30 Số 1 - 2020
We study the morpho-kinematics in the nascent wind of AGB star R Doradus in the light of high Doppler velocity wings observed in the spectral lines of several species. We probe distances from the star between ∼10 and ∼100 au using ALMA observations of the emission of five different molecular lines. High Doppler velocity enhancements of the line emission are observed in the vicinity of the line of ......
#stars #AGB and post-AGB #circumstellar matter #individual #R Dor #radio lines
New Deterministic Protocol for Joint Remote Preparation of Two-qubit States
Communications in Physics - Tập 22 Số 3 - 2012
Designing quantum protocols with unit success probability is highly desirable from a viewpoint of the overall resource cost. In this work, we propose a new deterministic protocol for joint remote preparation of the most general two-qubit state using the same quantum/classical resource as in [An et al., Phys. Lett. A {\bf 375} (2011) 3570] and, at the same time, retaining the passive role of the re......
The \(120^{0}\) ordered phase of the spin-1 \(J_{1} - J_{2}\) antiferromagnetic Heisenbeberg model on a triangular lattice
Communications in Physics - Tập 33 Số 2 - 2023
We study the effect of quantum and thermal fluctuations on the excitation energy spectrum and sublattice magnetization of the 1200 ordered phase of the spin-1 antiferromagnetic Heisenberg model on a triangular lattice with nearest J1 and next-nearest-neighbor J2 exchange interactions. The auxiliary fermionic representation of the spin operators within a functional integral formalism with an imagin......
#strongly correlated electron systems #antiferromagnetics #Heisenberg model #triangular lattice
Electromagnetically Induced Transparency in the Five-level Scheme of Cold \(^{85}\)Rb Atomic Vapour
Communications in Physics - Tập 23 Số 2 - 2013
In the framework of the semiclassical theory, we develop an analytical approach on electromagnetically induced transparency (EIT) in the medium consists of five-level cascade scheme of cold 85Rb atoms. In the weak field limit of the probe light, an analytical representation of EIT spectra is derived for the first time. Signatures of EIT spectra, including transparency efficiency, have been investi......
#Electromagnetically induced transparency #Quantum interferences
Tổng số: 738
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