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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. "

"Teori Eddington-inspired Born-Infeld (EiBI) merupakan teori modifikasi dari teori relativitas umum. Dalam penelitian ini, kami menerapkan fenomena non-perturbatif, yaitu model kreasi alam semesta Vilenkin dan model Coleman-de Luccia (CdL) Instanton, kedalam kerangka teori EiBI. Pada model Vilenkin didapatkan hasil berupa aksi Euclidean SE. Hasil ini memiliki suku tambahan  yang berbeda dengan hasil teori relativitas umum. Sedangkan untuk model CdL dihitung solusi analitik menggunakan aproksimasi thin-wall dan solusi numerik. Pada solusi analitik ditemukan jari-jari gelembung dan aksi bounce B. hasil yang didapatkan menunjukkan B negatif, sangat berbeda dengan kasus relativitas umum yang memberikan B positif. Sedangkan untuk solusi numerik ditemukan bentuk profil medan skalar, faktor skala dan B. Untuk kasus ini B positif. Hasil solusi analitik dan solusi numerik memiliki perbedaan yang signifikan. Hal ini kemungkinan besar terjadi karena metode aproksimasi yang digunakan kurang tepat.

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Eddington-inspired Born-Infeld (EiBI) theory is a modified theory of general relativity. In this research, we will implement EiBI theory with non-perturbative quantum cosmology phenomena, starting with Vilenkins Creation of The Universes from Nothing and tunneling mechanism through Coleman-de Luccia (CdL) instanton. In Vilenkins model, we find the Euclidean action SE. This result differs from the general relativity counterpart by addition of extra term . For CdL instanton, we find the analytic solution using thin-wall approximation and the numerical solution. In the analytic solution, we find the radius of bubble and bounce action B.The value of B is negative, which is differs significantly from the general relativity result. As for the numerical solution, we find the scalar field, scale factors, and the bounce action B. This time B is positive. We can see that the analytic and numeric solutions have a very significant difference. This difference might appears because the approximation method used is not suitable for EiBI theory."

"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. "

"Kompaktifikasi dimensi ekstra 5D dengan suku kinetik hukum pangkat (power law), telah berhasil menggulung satu dimensi ekstra, serta memperoleh informasi radius dan kestabilannya. Namun dari kajian tersebut didapatkan kompaktifikasi yang bersifat anti-de sitter (Ads) pada empat dimensi. Hal yan menunjukkan bahwa lagrangian yang dipilih belum sesuai dengan lagrangian alam semesta tempat kita berada yang mengharuskan bersifat de sitter (dS).

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The 5D extra dimension compatibility with the power law kinetic terms, has succeeded in rolling an extra dimension, and obtained information on its radius and stability. However, from this study, it was found that anti-de sitter compactification (Ads) in four dimensions was obtained. This shows that the selected lagrangian does not match the universe we are in, which requires it to be de sitter (dS)."

"ABSTRAKTelah dikaji sebuah model sederhana yang menjelaskan mekanisme kompaktifikasi dimensi dengan menggunakan medan skalar Dirac-Born-Infeld pada lima dimensi. Dengan mereduksi satu dimensi, model kita hanya akan menghasilkan vacua anti de Sitter. Investigasi pada q dimensi ekstra (q lebih dari satu) juga mendapatkan hasil anti de Sitter.

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ABSTRACTA simple model that explains mechanism of dimensional compactification using Dirac-Born-Infeld scalar field in five dimensions has been studied. By reducing the one dimension, our model will only result in the anti de Sitter vacua. Investigation on q-extra dimensions (q more than one) also gets the result anti de Sitter vacua."