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“Tracking rule" and generalization of special relativity “跟踪规则”与狭义相对论的推广
4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-09-19 DOI: 10.1139/cjp-2023-0083
Alexander Kholmetskii, Oleg V. Missevitch, Tolga Yarman
{"title":"“Tracking rule\" and generalization of special relativity","authors":"Alexander Kholmetskii, Oleg V. Missevitch, Tolga Yarman","doi":"10.1139/cjp-2023-0083","DOIUrl":"https://doi.org/10.1139/cjp-2023-0083","url":null,"abstract":"We recall that a consistent description of the Thomas precession and Thomas–Wigner rotation is impossible without introducing a “tracking rule” into the structure of the special theory of relativity (STR), as we have shown in our publications (A.L. Kholmetskii and T. Yarman. Eur. Phys. J. Plus 132, 400 (2017); A.L. Kholmetskii, O.V. Missevitch, T. Yarman, and M. Arik. Europhys. Lett. 129, 3006 (2020)). The purely phenomenological origin of this rule in the framework of STR allows assuming the existence of a more general theory of empty space–time than STR, where the “tracking rule” is intrinsically incorporated into its structure. We find a possible way of developing such a generalized theory of empty space–time, where the “tracking rule” naturally arises, and propose an experimental scheme for its verification.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135059794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anisotropic dark energy universe in f(Q, T ) gravity with Observational constraints 具有观测约束的f(Q, T)引力中的各向异性暗能量宇宙
4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-09-19 DOI: 10.1139/cjp-2023-0127
Y.S. Solanke, A. P. Kale, D.D. Pawar, V.J. Dagwal
{"title":"Anisotropic dark energy universe in f(Q, T ) gravity with Observational constraints","authors":"Y.S. Solanke, A. P. Kale, D.D. Pawar, V.J. Dagwal","doi":"10.1139/cjp-2023-0127","DOIUrl":"https://doi.org/10.1139/cjp-2023-0127","url":null,"abstract":"Aim of this paper is to investigate an anisotropic locally rotationally symmetric (LRS) Bianchi type-I space–time in the context of the recently proposed f( Q, T) gravity, where Q is the non-metricity scalar and T is energy–momentum tensor. We have considered f( Q, T) = α Q + β T a linear form, where α and β are model parameters. We have analyzed the exact solution of LRS Bianchi type-I space–time by assuming relation between metric potential A = B n , where n is arbitrary non-zero real number. To study the anisotropic nature of the dynamical dark energy, we assume that the skewness parameters are time dependent and n ≠ 1. We have constrained to our model by using observational Hubble dataset. Onwards, discussed the physical behavior of cosmological parameters such as energy density, pressure, EoS parameter, deceleration parameter and, Energy conditions.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135059620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ab-initio investigation of structural, opto-electronic, and thermodynamic properties of ZnAl2Se4 for photovoltaic applications 光伏材料ZnAl2Se4结构、光电和热力学性质的从头算研究
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-09-07 DOI: 10.1139/cjp-2023-0077
N. Erum, Javed Ahmad, M. Iqbal
{"title":"Ab-initio investigation of structural, opto-electronic, and thermodynamic properties of ZnAl2Se4 for photovoltaic applications","authors":"N. Erum, Javed Ahmad, M. Iqbal","doi":"10.1139/cjp-2023-0077","DOIUrl":"https://doi.org/10.1139/cjp-2023-0077","url":null,"abstract":"In this manuscript, the structural, opto-electronic, and thermodynamic properties of ZnAl2Se4 chalcogenide compounds were studied in detail using the full potential linearized augmented plane wave method. The exchange and correlation potentials used in density functional theory were calculated using local density approximation, the generalized gradient approximation (GGA) method, and the modified Becke–Johnson (mBJ) potential using Wien2k code. The obtained results were compared with each other as well as with available experimental data. At ambient conditions, ZnAl2Se4 is a direct wide bandgap (Г–Г) semiconductor with a bandgap of 2.1 and 3.3 eV with GGA and mBJ potentials, respectively. Density of states (DOS; total DOS and Partial Density Of States (PDOS)) and electron density contour plots were in similar accordance with bandgap, showing semiconductive behavior and covalent bonding nature. The optical properties like the real and imaginary parts of the dielectric constant, the energy loss function L( ω), and the conductivity σ( ω) were calculated. Optical aspects show interaction among phonon and electron in terms of long-range and short-range forces. The studied compound is very useful for various linear–nonlinear optical devices, so this compound is very valuable for several linear–nonlinear optical devices. So this manuscript represents a comprehensive approach for calculating the complete set of useful properties of the ZnAl2Se4 compound, which can provide support for understanding various device phenomena such as electrochemical sensing, photovoltaics, and nonvolatile electronic memories.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"os-27 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87211251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vortex Dynamics of a Three-dimensional Dipolar Bose-Einstein Condensate 三维偶极玻色-爱因斯坦凝聚体的涡旋动力学
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-08-28 DOI: 10.1139/cjp-2023-0055
Yuan-Sheng Wang
{"title":"Vortex Dynamics of a Three-dimensional Dipolar Bose-Einstein Condensate","authors":"Yuan-Sheng Wang","doi":"10.1139/cjp-2023-0055","DOIUrl":"https://doi.org/10.1139/cjp-2023-0055","url":null,"abstract":"By numerically solving the Gross-Pitaevskii equation with phenomenological dissipation term, we study the vortex formation properties of a three-dimensional dipolar Bose-Einstein condensate of $^{164}$Dy atoms. We studied the influence of the contact interaction between atoms on the formation mechanism of vortex. We also study how the dipole orientation affects the vortex formation properties and the number of vortices. We find that enhancing the interaction of short-range repulsion interaction or dipolar repulsion interaction can shorten the time to form a stable vortex structure and increase the number of vortices.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"48 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76225656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Nonclassicality versus quantum non-Gaussianity of photon-subtracted displaced Fock state 修正:光子减去位移Fock态的非经典性与量子非高斯性
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-08-28 DOI: 10.1139/cjp-2023-0224
Deepak, A. Chatterjee
{"title":"Correction: Nonclassicality versus quantum non-Gaussianity of photon-subtracted displaced Fock state","authors":"Deepak, A. Chatterjee","doi":"10.1139/cjp-2023-0224","DOIUrl":"https://doi.org/10.1139/cjp-2023-0224","url":null,"abstract":"","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"2007 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78578787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analytical formulation for exciton in semiconductor quantum dot with parabolic confinement 具有抛物约束的半导体量子点中激子的解析表达式
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-08-12 DOI: 10.1139/cjp-2023-0034
A. EL Haddad
{"title":"Analytical formulation for exciton in semiconductor quantum dot with parabolic confinement","authors":"A. EL Haddad","doi":"10.1139/cjp-2023-0034","DOIUrl":"https://doi.org/10.1139/cjp-2023-0034","url":null,"abstract":"The exciton properties in cubical quantum dot (CQD), with parabolic confining potential, are theoretically investigated. We have used the twoband model, the effective mass approximation, and the variational method. The analytical expressions of the binding energy, the normalized photoluminescence energy transition, the spatial extension, and the oscillator strength of the exciton, in the ground state, have been obtained. The numerical calculations for the typical GaAs/AlxGa1-xAs CQD are presented. The effects of the cubic quantum dot length and the Al-concentration on the exciton properties are discussed. The results of the calculation illuminate that Al-concentration and the CQD length can make an important impact on the exciton binding energy and the photoluminescence peak energy.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"24 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87938128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic String Matter Collapse in Rainbow Gravity 磁弦物质在彩虹引力下坍缩
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-08-11 DOI: 10.1139/cjp-2023-0061
Ukasha Tasleem, Umber Sheikh
{"title":"Magnetic String Matter Collapse in Rainbow Gravity","authors":"Ukasha Tasleem, Umber Sheikh","doi":"10.1139/cjp-2023-0061","DOIUrl":"https://doi.org/10.1139/cjp-2023-0061","url":null,"abstract":"This work investigates the dynamics of a collapsing magnetic string dust and string fluid in the Plank Era via spherically symmetric rainbow geometry. The field equations are modified and solved to obtain the dynamical quantities including mass density, pressure, string tension, and magnetic field strength. These quantities are presented graphically. The energy conditions are computed showing that all the dynamical quantities are associated with physical matter. The distance and moment of apparent horizon formation are computed. The magnetic field is found to affect the distance and moment of the apparent horizon's formation. It accelerates the collapsing process. Further, the dynamical variables are maximum in the collapsing configuration's center leading to compact object (black hole) formation. The probing particle's energy affects all the dynamical variables of the fluid in a direct proportion. This resolves the information paradox as a particle with greater energy grasps the information from a particle with lesser energy and takes it out in the real world.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"47 3","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72483469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mathematical modelling of micropolar thermoelastic problem with nonlocal and hyperbolic two-temperature based on Moore–Gibson–Thompson heat equation 基于Moore-Gibson-Thompson热方程的非局部双曲双温微极热弹性问题数学建模
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-07-25 DOI: 10.1139/cjp-2022-0339
Rajneesh Kumar, S. Kaushal, A. Kochar
{"title":"Mathematical modelling of micropolar thermoelastic problem with nonlocal and hyperbolic two-temperature based on Moore–Gibson–Thompson heat equation","authors":"Rajneesh Kumar, S. Kaushal, A. Kochar","doi":"10.1139/cjp-2022-0339","DOIUrl":"https://doi.org/10.1139/cjp-2022-0339","url":null,"abstract":"The aim of this article is to study a problem of thermomechanical deformation in a homogeneous, isotropic, micropolar thermoelastic half-space based on the Moore–Gibson–Thompson heat equation under the influence of nonlocal and hyperbolic two-temperature (HTT) parameters. The problem is formulated for the considered model by reducing the governing equations into 2D and then converting to dimensionless form. Laplace transform and Fourier transform techniques are employed to obtain the system of differential equations. In the transformed domain, the physical quantities like displacement components, stresses, thermodynamic temperature, and conductive temperature are calculated under the specific types of normal force and thermal source at the boundary surface. A numerical inversion technique is used to recuperate the equations in the physical domain to exhibit the influence of nonlocal and HTT in the form of graphs. Particular cases of interest are also discussed in the present problem. The present study finds applications in a wide range of problems in engineering and sciences, control theory, vibration mechanics, and continuum mechanics.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"122 29","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72376702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The photoelectron angular distributions of H atoms in two-color linearly polarized laser fields 双色线偏振激光场中氢原子的光电子角分布
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-07-18 DOI: 10.1139/cjp-2022-0335
Xianghe Ren, Qi Yang, Jingtao Zhang
{"title":"The photoelectron angular distributions of H atoms in two-color linearly polarized laser fields","authors":"Xianghe Ren, Qi Yang, Jingtao Zhang","doi":"10.1139/cjp-2022-0335","DOIUrl":"https://doi.org/10.1139/cjp-2022-0335","url":null,"abstract":"By calculating the photoelectron angular distributions of H atoms driven by two-color linear polarization laser pulses, we investigate the influence of ionization channels on the photoelectron angular distributions. For a fixed final kinetic energy of photoelectron E k  =  qω1, qω1 =  lω1 +  mω2, in which l is the number of photons absorbed from laser with a wavelength of λ1, m is the number of photons absorbed from laser with a wavelength of λ2, and the combination ( l, m) is an ionization channel. We find that the photoelectron angular distributions are obviously dependent on ionization channels. For a given ionization channel, the low-order phased Bessel function, which corresponds to the smaller number of photon absorbed, has the main contribution to the photoelectron angular distributions. We also find that the relative direction of the polarization vector of two laser pulses has significant influence on the photoelectron angular distributions. By changing the relative direction between two polarization vectors, we can control the emission direction of photoelectrons.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"126 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85586236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic black holes within Einstein-AdS gravity coupled to nonlinear electrodynamics, extended phase space thermodynamics and Joule--Thomson expansion 爱因斯坦- ads引力下的磁性黑洞与非线性电动力学、扩展相空间热力学和焦耳-汤姆逊展开耦合
IF 1.2 4区 物理与天体物理
Canadian Journal of Physics Pub Date : 2023-07-13 DOI: 10.1139/cjp-2023-0119
S. Kruglov
{"title":"Magnetic black holes within Einstein-AdS gravity coupled to nonlinear electrodynamics, extended phase space thermodynamics and Joule--Thomson expansion","authors":"S. Kruglov","doi":"10.1139/cjp-2023-0119","DOIUrl":"https://doi.org/10.1139/cjp-2023-0119","url":null,"abstract":"Einstein's gravity in AdS space coupled to nonlinear electrodynamics is studied. We analyse the metric, mass functions and corrections to the Reissner--Nordström solution. Magnetic black holes thermodynamics in extended phase space is investigated. We formulate the first law of black hole thermodynamics showing that the generalized Smarr relation holds. The black hole stability is studied by evaluating the Gibbs free energy and heat capacity. To study the cooling and heating phase transitions of black holes we consider the Joule--Thomson isenthalpic expansion. The Joule--Thomson coefficient and the inversion temperature are calculated.","PeriodicalId":9413,"journal":{"name":"Canadian Journal of Physics","volume":"46 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89961573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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