{"title":"A single complex potential for gravity and electromagnetism","authors":"Riadh H. Al Rabeh","doi":"10.12988/ASTP.2021.91671","DOIUrl":"https://doi.org/10.12988/ASTP.2021.91671","url":null,"abstract":"The similarity between gravity and static electricity is said to stop at the inverse square law that governs the two, and even that was disputed after the introduction of GR. Some claimed that the form of the law itself is only the result of the thinning of forces over a spherical surface that grows as the square of the radius away from the source. We show here that the similarity is in fact much more fundamental and deep because of the single origin of the two phenomenanamely EM radiation, which must be why gravity too travels at the speed of light. In [1] radiation was visualized as evaporated matter and matter as condensed radiation, since radiation carried electrical as well as mechanical attributes and when condensing in the form of a topological EM soliton, it causes the emergence of the rest of the matter attributes of mass, gravity, charge, intrinsic spin and dipole moment. The inverse square law for both gravity and electricity then appears simply as a direct consequence of momentum conservation in the condensed form [1]. This is a fundamental connection, but nonetheless it leaves one important difference. It is that similar masses attract whereas similar charges repel. However, if we took mass to be an imaginary electric charge, similar masses would repel as for electric charges and a complete similarity is achieved. With gravity fields having such imaginary values, their squares and their force effects remain real. This is then used to construct potential representations for each one of the two phenomena. The usual retarded potential integral is followed to derive a full set of fields for gravity like","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"13 33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128932786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"BPS domain wall from toric hypermultiplet","authors":"R. N. Wijaya, F. Akbar, J. Kosasih, B. Gunara","doi":"10.12988/ASTP.2018.827","DOIUrl":"https://doi.org/10.12988/ASTP.2018.827","url":null,"abstract":"In this paper, we present the gradient flow equations of BPS domain walls of five dimensional gauged N = 2 supergravity coupled to a hypermultiplet where the hypermultiplet scalar manifold is chosen to be the most general selfdual Einstein spaces admitting torus symmetry. An interesting result is that the gradient flows describe the supersymmetric flows and the spin-12 fermion masses on the walls which is on the upper half plane. For further analysis, we provide stability condition for the flow equation obtained for BPS domain walls.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"SE-8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126576525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the dynamic regulation of three-layer stratified flow through porous media","authors":"S. Alkharashi, Khaled Al-Hamad, Azizah Alrashidi","doi":"10.12988/ASTP.2018.8521","DOIUrl":"https://doi.org/10.12988/ASTP.2018.8521","url":null,"abstract":"Stability properties of two-dimensional viscous fluid layers moving in porous media is examined. The system is composed of a middle fluid embedded between two semi-infinite fluids, in which the effect of the electric field is to introduce. The principle aim of this work is to investigate the influence of fluid viscosity and the porosity effect on the growth rate in the presence of horizontal electric field. The parameters governing the layers flow system, the electric properties and porosity effects strongly influence the wave forms and their amplitudes and hence the stability of the fluid. The stability criteria are performed theoretically in which stability diagrams are obtained. It is established that the phenomenon of the dual role is found for increasing the permeability parameter as well as the dielectric ratio. It has been found that both the viscosity coefficient and the electric field damps the growth rate, introducing stabilizing influence. The role of Reynolds number and the density ratio is to increase the amplitude of the disturbance leading to the destabilization state of the flow system, promote the oscillatory 198 Sameh A. Alkharashi, Khaled Al-Hamad and Azizah Alrashidi behavior. Influence of the various parameters of the problem on the interface stability is thoroughly analyzed.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130720139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fractional quantization of holonomic constrained systems using fractional WKB approximation","authors":"E. H. Hasan","doi":"10.12988/ASTP.2016.6313","DOIUrl":"https://doi.org/10.12988/ASTP.2016.6313","url":null,"abstract":"In this work, the fractional canonical quantization for holonomic constrained systems is examined using the fractional WKB approximation. The fractional Hamilton-Jacobi function is obtained. The solutions of the equations of motion are derived from this function. It is shown that these solutions are in exact agreement with using the fractional Euler-Lagrange equations and fractional Hamilton’s equations. Also, this function enables us to construct the suitable wave function and then to quantize these systems using the fractional WKB approximation. One example is examined to illustrative the formalism. PACS: 11. 10. Ef, 45. 20. –j, 45.20. Jj, 45. 10. Hj, 04. 60. Ds, 04.20.Fy","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132742709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Symmetric Identities for the Generalized Higher-order q-Bernoulli Polynomials","authors":"Dae San Kim, Taekyun Kim, Sang-Hun Lee","doi":"10.12988/ASTP.2014.4218","DOIUrl":"https://doi.org/10.12988/ASTP.2014.4218","url":null,"abstract":"In this paper, we give identities of symmetry for the generalized higher-order qBernoulli polynomials attached to χ which are derived from the symmetric properties of multivariate p-adic invariant integrals on Zp.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115574561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On the boundary layer flow of a shear thinning liquid over a 2-dimensional stretching surface","authors":"P. Chandran, N. C. Sacheti, T. Elbashir","doi":"10.12988/ASTP.2018.71259","DOIUrl":"https://doi.org/10.12988/ASTP.2018.71259","url":null,"abstract":"Shear thinning phenomenon in inelastic non-Newtonian fluids is widely encountered in several engineering and industrial applications. In this paper, we have considered steady boundary layer flow of a special type of pseudoplastic fluid over a 2-dimensional stretching sheet. Using the Williamson fluid model, we have carried out an analytico-numerical study to investigate the effect of higher order terms in the perturbation analysis involving a non-Newtonian parameter. A number of illustrative plots of velocity components have been presented to showcase several features of this flow. It has been shown that higher order relative 26 Pallath Chandran, Nirmal C. Sacheti and Tayfour El-Bashir effects for flow over a stretching surface do not strictly exhibit the nonmonotonic features observed in stagnation point flow of pseudoplastic as well as dilatant fluids, over a stationary surface. Furthermore, the magnitude of the wall shear stress at the stretching sheet is quite sensitive to non-Newtonian parameter as well as relative order effects in the perturbation expansion. In both cases, the wall shear stress increases with increasing non-Newtonian effects of the pseudoplastic fluid. Subject Classification: 76A05, 76D10","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115881582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of the Spin-Orbit Interaction on the Electronic Structure, Magnetic Moment and Spin Density Maps of Co 2YSn (Y = Ti,V and Mn)","authors":"N. El-Shamy, F. A. El‐Ela, S. H. Aly, S. Yehia","doi":"10.12988/ASTP.2013.13027","DOIUrl":"https://doi.org/10.12988/ASTP.2013.13027","url":null,"abstract":"We present a study on the effect of the spin‐orbit interaction on the electronic structure, magnetic moment and spin density maps in the (110) crystal plane for Co 2YSn (Y = Ti, V and Mn) compounds. Our calculations are performed using a self-consistent, full-potential, linearized augment ed plane wave (FPLAPW) method as implemented in Wein2k. The spin-orbit coupling is found to eliminate the spin-down gap in the Mn and Ti-containing allo ys and leads to non-integer total magnetic moments, i.e. impairs half-metallici ty.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124300264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The characteristics of increased pressure drop in pipes with grooved","authors":"P. Sunu","doi":"10.12988/ASTP.2015.412152","DOIUrl":"https://doi.org/10.12988/ASTP.2015.412152","url":null,"abstract":"The aim of this study was to investigate the characteristic of increased pressure drop in grooved straight pipes. The observation has been done at number of groove of 9, 25 and smooth pipe used as comparison. The result shows that the instantaneous pressure drop signal of grooved pipe fluctuate in small time-scale as a result the overall pressure drop increase compare to the pressure drop of smooth pipe.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124329130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cosmological exact solutions of Petrov type D. A mixture of three fluids: quintessence, dust and radiation","authors":"R. Alvarado","doi":"10.12988/astp.2020.91502","DOIUrl":"https://doi.org/10.12988/astp.2020.91502","url":null,"abstract":"In this paper, two exact solutions to the Einstein’s equations are obteined for an anisotropic and homogeneous symmetry of Petrov Type D, where the difference between the solutions is if the expansion is presented, initially, in a greater way on an axis or if it is presented in a greater way on a plane. In the solutions, it is considered a mixture with minimal interaction of three fluids, quintessence (P = −μ/3), dust (P = 0) and radiation (P = μ/3); besides the general case of the three fluids, the particular cases when the mixture contains two of them are analyzed, the singularities and the role that each one of the fluids have on them are studied; the Hubble parameters, the deceleration parameter and the role that the fluids represent on them are determined and analyzed, and the temperature of those fluids and the role that these fluids play on that magnitude in different time periods is determined.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114317274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Belcadi, H. E. Rhaleb, K. Gueraoui, M. Driouich
{"title":"Hybridization microwave and laser for melting of ceramic surface","authors":"M. Belcadi, H. E. Rhaleb, K. Gueraoui, M. Driouich","doi":"10.12988/ASTP.2014.39109","DOIUrl":"https://doi.org/10.12988/ASTP.2014.39109","url":null,"abstract":"In this work the numerical calculation was used to obtain the temperature profile with preand post-heating by microwave. The laser surface melting and re-solidification has been applied to eliminate pore and create homogeneous surface in ceramics. The problem is the formation of crack during cooling. To eliminate this problem we applied preand post-heating by microwave source to obtained slower surface cooling rates and thermal stress less than the tensile strength.","PeriodicalId":127314,"journal":{"name":"Advanced Studies in Theoretical Physics","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114697129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}