كتابة النص: الأستاذ الدكتور يوسف أبو العدوس - جامعة جرش قراءة النص: الدكتور أحمد أبو دلو - جامعة اليرموك مونتاج وإخراج : الدكتور محمد أبوشقير، حمزة الناطور، علي ميّاس تصوير : الأستاذ أحمد الصمادي الإشراف العام: الأستاذ الدكتور يوسف أبو العدوس
فيديو بمناسبة الإسراء والمعراج - إحتفال كلية الشريعة بجامعة جرش 2019 - 1440
فيديو بمناسبة ذكرى المولد النبوي الشريف- مونتاج وإخراج الدكتور محمد أبوشقير- كلية تكنولوجيا المعلومات
التميز في مجالات التعليم والبحث العلمي، وخدمة المجتمع، والارتقاء لمصاف الجامعات المرموقة محليا واقليميا وعالميا.
المساهمة في بناء مجتمع المعرفة وتطوره من خلال إيجاد بيئة جامعية، وشراكة مجتمعية محفزة للابداع، وحرية الفكر والتعبير، ومواكبة التطورات التقنية في مجال التعليم، ومن ثم رفد المجتمع بما يحتاجه من موارد بشرية مؤهلة وملائمة لاحتياجات سوق العمل.
تلتزم الجامعة بترسيخ القيم الجوهرية التالية: الإلتزام الإجتماعي والأخلاقي، الإنتماء،العدالة والمساواة، الإبداع، الجودة والتميّز، الشفافية والمحاسبة، الحرية المنظبطة والمستقبلية.
دكتوراة تخصص فيزياء من جامعة قائد اعظم الباكستانية سنة 2000
دكتوراه من جامعة قائد اعظم / باكستان عام 2000 م
عنوان الرسالة: “Dimerization and Frustration in Ferrimagnetic systems”
The heat capacity of some ferrimagnets has additional structures like a shoulder in the Schottky-like peak, or emer- gence of a second peak when an external magnetic field is applied. It is shown here that the ferromagnetic and anti- ferromagnetic elementary excitation spectra give rise to two independent heat capacity peaks, one enveloped by the other, which add up to give the peak for the total system. Taking this into account helps understand the additional structures in the peaks. Moreover, the classification of ferrimagnets into predominantly antiferromagnetic, ferromag- netic, or a mixture of the two is shown to be validated by studying them under additional influences like dimerization and frustration. Because these two are shown to influence the ferromagnetic and antiferromagnetic dispersion rela- tions—and hence the quantities like heat capacity and magnetic susceptibility—by different amounts, the characteriza- tion of ferrimagnetic systems (1,1/2), (3/2,1) and (3/2,1/2) is brought out more clearly. Both these influences enhance antiferromagnetic character.
Using linear spin-wave theory we have investigated the thermal properties of frustrated dimerized Heisenberg ferri- magnetic system with alternating spins 1s and 2s on one- and two-dimensional lattices. At intermediate temperature the susceptibility T and the specific heat shows a minimum and a Schottky-like peak respectively. Frustration enhances the antiferromagnetic aspect in the system by causing a left-shift in the peak and the minimum which indicates that the antiferromagnetic behavior overbalance the ferromagnetic one at earlier temperatures. The effect of dimeriza- tion is different for the two form of the coupling constants. While the expanded form; vC1J , boosts the antiferro- magnetic behavior of the system by making a left-shift of the peak and the minimum, the distance-variable couplingconstant; ,1J shifts them to the right opposing, for a while, the appearance of the antiferromagnetic aspect. The slope of T after the minimum shows that the aspect of ferrimagnetic system with spins (3/2, 1) is more antiferro-magnetic and the system with (3/2, 1/2) is ferromagnetic. Free energy and magnetization decreased by increasing dimerization as well as frustration. Both of them scales withPACS numbers
Within the zero-temperature linear spin-wave theory we have investigated the effect offrustration and dimerization of a Heisenberg system with alternating spins s1 and s2 on one-and twodimensionallattices. The combined effect appears most visibly in the elementary excitation spectra.In contrast to the ground-state energy that decreases with dimerization and increases with frustration,the excitation energies are shown to be suppressed in energy by both dimerization and frustration.The excitation modes also exhibit softening beyond a threshold value of frustration, signalling atransition from a classical ferrimagnetic state to a spiral state. The threshold value of frustration in achain decreases with dimerization, showing that dimerization further assists in the phase transition.That the long-range classical ferrimagnetic order is destroyed is shown by the correlation length aswell as sublattice magnetization decreasing with both dimerization and frustration. These effectshave also been studied for a square lattice taking the dimerization interaction asJ/(1 ∓ δ) rather thanJ(1±δ) where the linear spin-wave theory shows that dimerization initially opposes the frustrationledtransition to a spiral magnetic state, but then higher magnitudes of lattice deformation facilitatethe transition.
We theoretically investigate the phenomenon of superluminosity of the transmission probe field under the effect of a strong driving field in a hybridnano-electro-optomechnical system comprising two coupled charged mechanical end resonators connected by bias voltages. The first mechanicalcharged mirror is connected to the optical field, while the second charged mirror is coupled by Coulomb coupling. We find that the superluminalbehavior of the transmitted probe field can be switched by adjusting the cavity field detuning and atom field detuning. The present study extends thepreviously developed simple optomechanical and nano-electro-optomechanical system (Ma et al., 2014)[62]. Moreover, the group delay of the pulseadvancement can be controlled by adjusting the electrostatic Coulomb coupling and the power of the driving field. We explain the effect of atomicfield detuning on the superluminal behavior in the regimes of anti-Stokes sidebands, i.e. Δa = −ω1.
Based on continuous wavelet transform (CWT), we show that the resolution of a recurrence trackingmicroscope (RTM) is enhanced to subnanometer scale. Our approach helps us to read informationon frequency bands, time of revivals, and corresponding time of fractional revivals more accurately.We demonstrate that wavelet analysis provides a deeper information on the phenomena of quantumrecurrences in general. Our analytical results show very good agreement with numerical results basedon experimental parameters.
We suggest two schemes to generate bipartite entangled states bymeans of a quantum measurement at a third party. The two partiesto be entangled have separate entangled states with the third partyin modes C1 and C2. In our first scheme we generate entanglementbetween the two remote parties by considering the modes C1 and C2indistinguishable. However, in the second scheme we generate entangledstates by considering the two modes to be distinguishable. We discussthat the first scheme of remote entanglement generation can be extendedto any N number of parties. On making a quantum measurement onthis system, we develop quantum networks, based on W-states and othermultipartite symmetric entangled states
Dimerization of a spin-half Heisenberg antiferromagnet on a square lattice is investigated forseveral possible dimerized con¯gurations, some of which are shown to have lower ground stateenergies than the others. In particular, the lattice deformations resulting in alternate strongerand weaker couplings along both the principal axes of a square lattice are shown to result ina larger gain in magnetic energy. In addition, a `columnar' con¯guration is shown to have alower ground state energy and a faster increase in the energy gap parameter than a `staggered'con¯guration. The inclusion of unexpanded exchange coupling leads to a power law behaviorfor the magnetic energy gain and energy gap, which is qualitatively di®erent from that reportedearlier. Instead of increasing as ±x, the wo quantities depend on ± as ±º=j ln ±j. This is true bothin the near critical regime (0 · ± · 0:1) as well as in the far regime (0 · ± < 1). It is suggestedthat the unexpanded exchange coupling is as much a source of the logarithmic dependence as acorrection due to the contribution of umklapp processes. Staggered magnetization is shown tofollow the same ±-dependence in all the in the small ±-regime, while for 0 · ± < 1,it follows the power law ±x
All Rights Reseved © 2023 - Developed by: Prof. Mohammed M. Abu Shquier Editor: Ali Mayyas
