Here cp denotes the phase of the complex interaction parameter k, and crt= ± 1 stands for the spin variable at site i. The interaction energy between two sites at distance x decays exponentially with x but now with an oscillating amplitude of wavelength In/cp. This oscillation mimics the effect of the indirect exchange interaction between spins mediated by electrons that leads in realistic mode...

Informasi mengenai tingkat kesuburan di suatu perairan dapat menjadi dasar pengelolaan sumberdaya berkelanjutan. Kajian ini memiliki tujuan menganalisis pesisir Kampung Baru Kabupaten Bintan. Sampel diambil 30 titik yang ditentukan secara acak. Parameter lingkungan dimonitoring meliputi parameter fisika (suhu, kecepatan arus, dan kecerahan), kimia (DO, pH, salinitas, nitrat, fosfat), serta biol...

The Center for Research and Community Service is a unit that manages the fields of research community service. So far, (P3M) at Dhar-ma Bakti Lubuk Alung Foundation STKIP data on activities service using Microsoft Access, which entered into database. Therefore, web-based center application Dharma was built PHP programming language database processing MySQL. development method used waterfall met...

Video menjadi media yang sangat membantu dalam proses komunikasi jarak jauh. Dengan video chatting, user mampu melakukan jauh berupa gambar dan audio waktu sama tergabung video. Teknologi saat ini memudahkan untuk dapat peralatan pendukung adalah beberapa komputer / notebook serta koneksi internet, bahkan juga dilakukan dengan menggunakan smartphone. Dalam penelitian akan dirancang atau laptop ...

An explicit description is giv e n for th e uniqu e gra ph with as few arcs (eac h bearin g a positive length) as pos s ibl e, whi c h has a presc rib ed mat rix of s hortest-p ath di stan ces be twee n pa irs of distinct vertices. The sam e is d one in th e case wh e n the ith diago na l matrix e ntr y, in s te ad o f be ing zero , represents th e. le ngth of a s hort est c losed path co ntain...

This work presents measurements of differential cross sections, dσ/d cos θCM , and spin density ma-trix elements,ρMM ′ , for the reaction γp→ pω in the energy range 1.72 GeV<√s <2.84 GeV. Thedata were collected at Jefferson Lab, using the CLAS detector, as part of the g11a run period in2004. OurρMM ′ measurements vastly increase the precision of the world’s data ...

Multiple parton scatterings inside a large nucleus generally involve higher twist nuclear parton matrix elements The gluon bremsstrahlung induced by multiple scattering depends not only on direct parton matrix elements but also on momentum crossed ones due to the Landau Pomeranchuk Migdal in terference e ect We show that both types of twist four nuclear parton matrix elements can be factorized ...