The cosmic web is a complex network of thin walls, elongated filaments, and dense clusters that map the overall distribution of dark matter density in the universe. Dark matter haloes, which are collapsed structures, form and expand due to gravitational instability caused by slight initial density variations in the cosmic field. Understanding the properties of subhaloes within these haloes is...
we study thermodynamics of charged and uncharged 4-Dimension Einstein–Gauss–
Bonnet (4D-EGB) black holes. The context of this study is the Visser’s holographic thermodynamics with a fixed anti-de Sitter radius and a variable Newton constant known as restricted phase space thermodynamics (RPST). Our setup is constructed by using the AdS/CFT correspondence and by introducing a conjugate...
The discrepancy between Planck data and direct measurements of the current expansion rate $H_0$ has become one of the most intriguing puzzles in cosmology nowadays. The $H_0$ tension has reached $5\sigma$ in the context of standard cosmology i.e $\Lambda$CDM. Therefore, explanations to this issue are mandatory to unveil its secrets. Despite its success, $\Lambda$CDM is unable to give a...
In our study, we used the statefinder diagnostic tool to analyze phantom dark energy (DE) models, specifically the big rip (BR), the little sibling of the big rip (LSBR), and the little rip (LR). We generate evolutionary trajectories of the statefinder $S_n(z)$ diagnostic using a Markov Chain Monte Carlo method and plot them based on the best fit extracted from each model. Our results...
In the context of heavy-ion collisions, low relative-velocity two-particle correlations play a pivotal role in understanding the space-time characteristics of particle emission. These characteristics are typically represented by a relative emission source, which is determined through the Koonin-Pratt (KP) convolution formula, utilizing the relative wave-function of the particles. Previous...
In this paper, we construct a hybrid metric Palatini approach in which the Palatini scalar curvature is non minimally coupled to the scalar field. We derive the Einstein’s field equations, the equations of motion of the scalar field. Furthermore, the background and the perturbative parameters are obtained by means of Friedmann equations in the slow roll regime. The analysis of...
Deblurring is commonly applied in optics to correct images for distortions caused by apparatus. Here, we analyze the deblurring from the perspective of applications to nuclear and high energy data. To understand the deblurring we employ Singular Value Decomposition (SVD). We look for cases where the deblurring is successful and where it fails. The essential role is played by null space....
We propose a modification to the standard hybrid inflation model \cite{Linde:1993cn}, that connects a successful hybrid inflation scenario to the standard model Higgs sector, via the electroweak vacuum stability. The proposed model results in an effective inflation potential of a hilltop-type, with both the trans-Planckian and sub-Planckian inflation regimes consistent with the recent...
In this paper, we study analytically 2D bosonic oscillator under the influence of an external magnetic field in Anti de Sitter space, we expressed the energy eigenvalues and the corresponding wave function of the scalar case by Jacobi polynomials and we noticed that the energy remains discrete even for large values of the principal quantum number.For the vector case, since the problem is...
The discovery and development of quantum confinement triggered the study of the influence of the environment on quantum systems. Under such conditions, rearrangement of orbitals occurs in atoms and molecules, leading to changes in physical and chemical properties. This therefore leads us to study hydrogénoïde or artificial atomic systems (quantum dots QD) in plasmas.
We study this systems by...
In his approach to QED, Feynman reintroduced the ordering property of time as a fundamental component of his theory. This violated Minkowski's third postulate, that time be treated as a fourth geometric component, so constrained as to naturally satisfy Lorentz covariance. His work was so physically intuitive and computationally efficient, that despite some criticism, it is the method of...
Abstract
In this study, we examine the relationship between terms of trade and exchange rate volatility in the ECOWAS bloc taking into account the existential role of institutions. We focus on 15 countries in the ECOWAS bloc for the past 21 year (i.e., 2000-2021). Using the Panel Autoregressive Distributed Lag Model (PARDL), we estimate the short, long-run parameters and the error-correction...
This oral presentation delves into the application of Monte Carlo simulation using GEANT4 software to assess the performance of X-ray detectors. The study focuses on the use of a CsI(Tl) scintillator for X-ray imaging, comparing the outcomes achieved with pixelated and non-pixelated scintillators. The primary objective is to discern the essential differences between these two configurations by...
The diameter of single mode fiber is approximately 50 μm, due to the small diameter of fiber, effective coupling between two optical fibers is possible when fiber connectors will have high precision. In this simulation work, effectiveness of fiber connector will be analysed based on core diameter, taper length, tapered ratio, and numerical aperture. Generally, optical fiber is used in pair for...
Array signal processing is a field of signal processing that utilizes sensor arrays to detect incoming environmental signals and infer the signal's information, such as direction-of-arrival (DOA), signal power, amplitude, etc. Hence, it has numerous applications in automotive radar, astronomy, tomography, imaging, and wireless communication [1]-[3]. Recently, sparse linear arrays (SLAs) have...
Freely Available Complete Video Optics Course
Rick Trebino
Georgia Institute of Technology, School of Physics
Atlanta GA 30332 USA
rick.trebino@phyhsics.gatech.edu
frog.gatech.edu
- Re-inventing the Lecture
Despite the great technological advances of the past few decades, lecture preparation remains a time-consuming task, performed mostly in isolation with only the assistance...
There is a pressing need for the development of reliable, cost-effective sources of nonvolatile electronic storage devices due to the increase in the rate at which information is exchanged during this digital era. Phase change memory (PCM) is more predictable, less expensive, scalable and has an indefinite cyclability compared with other electronic memories like silicon-based flash memory. PCM...
Carbon nanotubes (CNTs) were synthesized by catalytic chemical vapor deposition (CCVD) method. The synthesized CNTs was purified with acid to remove the catalyst impurities and to enhanced deposition platinum (Pt) onto the CNTs surface. Platinum multiwall (Pt-MWCNTs) nanocomposites were produced by a wet impregnation technique and a known amount (0.5 g) nanocomposites was dispersed in Texanol...
The combustion process was used to synthesize the dysprosium (Dy3+) doped Sodium Calcium Vanadate (NaCaVO4) phosphor. The structural, optical and morphological investigations were carried out with the dopant concentrations ranging from x = 0 to 3 mol% for which X-Ray diffraction, photoluminescence spectroscopy, SEM and UV-Vis spectroscopy were studied. We have explored that the XRD results...
This study reports the analysis of energy transfer on zinc aluminate (ZnAl2O4) co-activated with terbium (Tb3+) and samarium (Sm3+) prepared by citrate precursor method. The nano-powders were prepared by using the citrate sol-gel method and annealed at 900 oC for 2 hrs for all samples. The X-ray powder diffraction (XRD) results revealed a single cubic structure of ZnAl2O4 and co-doping with...
Abstract
Currently, there is an overwhelming demand for the development of biocompatible glucose sensors with improved sensing capabilities such as, low limit of detection, high sensitivity and selectivity as compared to current technologies. To meet these needs, a move towards nonenzymatic glucose sensors has become necessary. These new sensors have gained significant interest due to...
- Introduction
Cinnamic acid (2-phenylacrylic acid) is a naturally occurring aromatic fatty acid with known cytotoxic activity towards different cancer cell lines [1]. The activity of this important molecule can be attributed to potential substitution reactions on the phenyl ring, the reducing ability of the C=C double bond and the ability of the -COOH group to donate an H+ to scavenge free...
1. Introduction
Lunar magma ocean (LMO) crystallization experiments and simulations performed by earlier workers have revealed that at the last stage, Fe-Ti-rich cumulates are formed [1,2,3], which have been linked to the varied TiO2 contents of the lunar basalts [4]. These last stage cumulates are postulated to be dense enough to sink down through the underlying...
The goal of this research is to investigate the structural, optoelectronic, and ther-
moelectric properties of the MXene, M 4 C 3 (M = Sc, Cr, and M n), using Wien2k code,
that is based on density functional theory (DFT). Structural properties and optimization
were calculated using PBE-GGA, PBEsol, LDA, and WC approximation. Based on an
analysis of the phase stabilities of the carbides, it...
Laser-induced disordering processes have been studied
intensively during the last decades. In this work, we
present investigations of a laser induced ordering process which
consists in the controlled mobility of crystal defects. In order
to study the possibility to guide vacancies by femtosecond-
laser pulses we performed ab initio
molecular dynamics simulations of laser-excited Silicon...
Metastasis suppressor protein 1 (MTSS1) is a membrane-interacting scaffolding protein that functions as a tumour suppressor in various carcinomas. MTSS1 binds phosphoinositide-containing membranes through its I-BAR domain, and can sense and generate negative membrane curvatures; however, the mechanisms by which MTSS1 localizes to cell–cell adhesions in epithelial cells and regulates their...
Introduction
Experimental Procedure
Result and Discussion
Conclusion
Chlorine has the highest electron affinity of any element. In nature, Cl exists mainly as the chloride anion, which was long considered to be unreactive under environmental conditions. In terrestrial soils, that assumption has proved unfounded, largely due to the revelation of various chlorinating enzymes in soil fungi and other microbes. In seawater, however, there has been comparatively...
