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"Teori elektrodinamika Born-Infeld merupakan teori nonlinear dari teori elektrodinamika Maxwell. Berangkat dari karakterisitik-karakteristik teori Born-Infeld - diantaranya adalah bahwa harga energi-diri berhingga untuk muatan titik dan bahwa medan elektromagnetik di dunia-volume D-brane dideskripsikan oleh teori ini - dan dipasangkan dengan medan gravitasi Einstein (Teori Abelian Einstein-Born-Infeld 6d) penulis mencoba untuk mendeskripsikan mekanisme kompaktifikasi dimensi ekstra, yaitu flux compactification. Hasil dari mekanisme ini adalah persamaan jari-jari ruang dimensi ekstra. Untuk menguji kestabilan ruang dimensi ekstra ini diperlukan penjelasan perspektif 4 dimensi, dimana jari-jari ruang dimensi ekstra dinyatakan oleh sebuah medan dinamik radion dengan potensial stabil. Nilai vakua dari potensial dengan jari-jari dimensi yang terkompaktifikasi ini dapat menunjukkan apakah ruang-waktu 4 dimensi berhubungan dengan ruang-waktu de Sitter, anti de Sitter atau Minkowksi 4 dimensi.

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Born-Infeld electodynamics is a nonlinear theory of Maxwell electrodynamics. Based on some properties of this theory - finite electrostatic self-energy of a point particle and electromagnetic field on the world-volume of D-brane are governed by Born-Infeld theory - and coupled it with Einstein Field, called Einstein-Born-Infeld theory, I attempt to describe flux compactification of extra dimension. The result is an equation of radius of extra dimension. The 4d perspective of this theory is needed to describe the stability of size of the extra dimension, where it will be identified by the effective potential. We can determine what the 4d spacetime is related to, either 4d de Sitter or anti de Sitter spacetime, from the potential vacua of the spacetime."

"Dipelajari efek temperatur pada persamaan keadaan materi nuklir asimetrik. Perhitungan dilakukan dengan menggunakan model nuklir Walecka nonlinier diperumum dengan pendekatan medan rata-rata. Penelitian difokuskan pada studi efek temperatur pada kurva kestabilan mekanik, kestabilan kimia, dan koeksistensi fasa. Dan juga membandingkan kurva kestabilan mekanik, kestabilan kimia, dan koeksistensi fasa menggunakan parameter set yang berbeda pada temperatur tertentu.

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The temperatur effect in the equation of state of asymetrik nuclear matter are studied. The Calculation are done by using generalized nonlinear Walecka nuclear model within mean field approximation. The investigation focus is on the temperatur effect of mechanical stabilty, chemical stability, and phase coexistance. And then we compare the curves of mechanical stabilty, chemical stability, and phase coexistance reproduced by different parameter set at finite temperature."

"This book shows that the strong interaction forces, which keep hadrons and nuclei together, are relativistic gravitational forces exerted between very small particles in the mass range of neutrinos. This book considers the motion of two or three charged particles under the influence of electrostatic and gravitational forces only, which shows that bound states are formed by following the same semi-classical methodology used by Bohr to describe the H atom. This approach is also coupled with Newton’s gravitational law and with Einstein’s special relativity. "

"There have been many recent and important developments based on effective field theory and the renormalization group in atomic, condensed matter, nuclear and high-energy physics. These powerful and versatile methods provide novel approaches to study complex and strongly interacting many-body systems in a controlled manner. The six extensive lectures gathered in this volume combine selected introductory and interdisciplinary presentations focused on recent applications of effective field theory and the renormalization group to many-body problems in such diverse fields as BEC, DFT, extreme matter, Fermi-liquid theory and gauge theories. "

"The main subject of the book is the continuum, field theoretic method of study of phase transformations in material systems. The method, also known as "phase field", allows one to analyze different stages of transformations on the unified platform. It has received significant attention in the materials science community recently due to many successes in solving or illuminating important problems. The book will address fundamentals of the method starting from the classical theories of phase transitions, the most important theoretical and computational results, and some of the most advanced recent applications."